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Features
* * * * * *
2-Phase 1 A Stepping Motor Driver Compensated Half Step Operation Chopper Current Control Unidirectional Single Wire Bus Interface with Error Feedback Intelligent Travel Operation Control Referencing by Extending or Retracting
Application
* Dynamic Headlamp Adjustment
Benefits
* * * *
Error Recognition with Feedback Short Circuit Protected Outputs Overtemperature Warning and Shut Off Supply Voltage Supervision
Intelligent Stepper Motor Driver ATA6830
Electrostatic sensitive device. Observe precautions for handling.
Description
The circuit serves to control a stepping motor for dynamic headlamp beam adjustment in automobiles. Two chopper-controlled H-bridges serve as the stepping motor driver. The circuit receives the commands to control the stepping motor by means of a unidirectional serial single-wire bus. An integrated process control independently moves the stepping motor into the new desired position. This allows it to be automatically accelerated and slowed down. The stepping motor is operated in compensated half-step operation. The maximum clock frequency at which the stepping motor is operated depends on the supply voltage, the chip temperature, the operating mode, and position difference.
Rev. 4575B-BCD-01/03
1
Figure 1. Block Diagram
AGND RSET COS Temperature Monitor
Supply Monitor
VDD Oscillator Biasing Voltage Regulator VSS
BUS
UART VBAT1A Command Interpreter VBAT1B
SM1A Cruising Service Control
SM1B
Driver Logic
SRA
Driver Logic
SRB
SM2A
SM2B
VBAT2A
Test Logic
VBAT2B
ATA6830
Pin Configuration
Figure 2. Pinning HP-VFQFP-N28
AGND
RSET
COS
VDD
23
28
27
26
25
24
VBAT1A n.c. SM1A SRA SM2A n.c. VBAT2A
BUS
22
VSS
n.c.
1 2 3 MLP 7x7mm 4 5 6 7 0.8mm pitch ATA6830 28 lead
21 20 19 18 17 16 15
VBAT1B n.c. SM1B SRB SM2B n.c. VBAT2B
8
9
10
11
12
13
14
n.c.
TA
2
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TTEMP
SCO1
SCO2
SCI1
SCI2
ATA6830
Pin Description
Pin 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 Symbol VBAT1A n.c. SM1A SRA SM2A n.c. VBAT2A n.c. SCI1 SCO1 SCI2 SCO2 TA TTEMP VBAT2B n.c. SM2B SRB SM1B n.c. VBAT1B BUS VDD VSS AGND RSET COS n.c. Function Battery voltage Not connected Connection for stepping motor winding A Sense resistor A connection Connection for stepping motor winding A Not connected Battery voltage Not connected Test pin, please connect to ground for EMC reasons Test pin, please connect to ground for EMC reasons Test pin, please connect to ground for EMC reasons Test pin, please connect to ground for EMC reasons Test pin, please connect to ground for EMC reasons Test pin, please connect to ground for EMC reasons Battery voltage Not connected Connection for stepping motor winding B Sense resistor B connection Connection for stepping motor winding B Not connected Battery voltage Receives the control instructions via the single wire bus from the controller 5 V supply voltage output Digital signal ground Analog signal ground Reference current setting. Connected externally with a resistor to AGND. The value of the resistor determines all internal current sources and sinks. Oscillator pin, connected externally with a capacitor to AGND. The value of the capacitance determines the chopper frequency and the baud rate for data reception. Not connected
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Functional Description
Analog Blocks
Figure 3. Analog Blocks
VBAT VDD
Supply Bias Oscillator Bias Generator Bandgap Voltage Regulator Voltage Supervisor Temperature Supervisor Voltage Levels Temperature Levels Clock Reset
COS
RSET
AGND
VSS
The circuit contains an integrated 5 V regulator to supply the internal logic and analog circuit blocks. The regulator uses an adjusted bandgap as voltage reference. Also all other parts that require an excellent voltage reference, such as the voltage monitoring block refer to the bandgap. The bias generator derives its accurate currents from an external reference resistor. The oscillator is used for clocking the digital system. All timings like the baud rate, the step duration and the chopper frequency are determined from it. An external capacitor is used for generating the frequency. The voltage monitoring enables the circuit to drive the stepping motor at different battery voltage levels. According to the battery voltage the stepping motor will be accelerated to a maximum step velocity. In case of under or over voltage the motor will shut off. A temperature monitoring is used for shut off at overtemperature conditions and current boost in case of low temperature.
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Digital Blocks
Figure 4. Digital Blocks
Clk Step Time Memory Voltage Levels Maximum Step Time New Step Time Actual Step Time Error Signals UART BUS Clock Recovery VREF Bitstream Recovery shiftclk bitstream rxd Data Recognition & Parity-Check reference run new position Cruise Control Stepper Motor Control Temperature Signals
Reset
Desired Position Error Timer Error Signals Instantaneous Position
Figure 4 shows all digital blocks of the circuit. The stepping motor will be controlled by commands via the bus input pin. An analog comparator is used as a level shifter at the input. There is also a possibility of clamping the bus pin to ground. This will be used after detecting an error to feedback this to the microcontroller. The next block is a UART. Its task is clock recovery and data recognition of the incoming bit stream. For clock recovery a special bitstream is used after each power on. The generated bitstream will be analyzed and after a correct parity check interpreted for execution. A sophisticated cruise control generates all control signals for the two H-bridge drivers. It uses an internal step-time table for accelerating and decelerating the stepping motor depending on the actual and desired position and the temperature and voltage levels. Exception handling is integrated to interpret and react on the temperature, supply voltage, and coil-current signals from the analog part.
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Stepping Motor Driver
Figure 5. Stepping Motor Driver
Stepper Motor Control
Driver Logic
Error Signals
VBAT
SM1x
SM2x
Temperature Shutdown
Temp. Shutdown
Temperature Warning
Temp. Warning
Clk
SRx
Reset
Vref
Shunt
Figure 5 shows the diagram of one H-bridge driver stage. It consists of two NMOS and two PMOS power transistors. An external shunt is used for measuring the current flowing through the motor coil. Additional comparators and current sensing circuitry is integrated for error detection.
Data Communication
The circuit receives all commands for the stepping motor via a single wire bus. In idle mode the bus pin is pulled up by an internal current source near to VBAT voltage. During the transmission the external transmitter has to pull down the bus level to send information about data and clock timing. The used baud rate has to be about 2400 baud. Because of oscillator tolerances a synchronization sequence has to be sent at the beginning of data transfer. Figure 6 shows the pattern used for this sequence. The circuit uses the 1-0-1-0 sequences for adjusting the internal bit time. Later on during data transfer every 1-0-1-0 sequence coming up randomly is used for resynchronization. Thus all tolerances that occur during operation will be eliminated. To obtain a synchronization of up to 15% oscillator tolerance the pattern has to be sent at least 4 times.
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Figure 6. Synchronization Sequence
SYNCHRONIZATION PATTERN
PARITY BIT
START BIT
PARITY BIT
START BIT
STOP BIT
STOP BIT
Between two commands a pause has to be included. This is necessary for a clear recogition of a new message frame (command). Figure 7 shows the timing diagram of two commands. Figure 7. Message Frame and Space
MESSAGE FRAME HIGH BYTE LOW BYTE SPACE
Every command consists of 16 bits. They will be sent with two bytes. Figure 8 shows the message frame. The high byte is sent first, immediately followed by the low byte. Every byte starts with a start bit and ends with a parity bit and a stop bit. The first start bit (level 0) after a pause (level 1) indicates the beginning of a new message frame. The value of the parity bit has to be odd, i.e., the crossfooting of the byte including the parity bit is odd. If a data packet is not recognized due to a transmission error (parity error), the entire command is rejected. Figure 8. Command Bits
MESSAGE FRAME HIGH BYTE LOW BYTE
PARITY BIT 7 START BIT 6 5 4 3 2 1 0 STOP BIT
START BIT 7 6 5 4 3 2 1
PARITY BIT 0 STOP BIT
8 DATA BITS
8 DATA BITS
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Bus Commands
There are different commands for controlling the stepping motor. Table 1 shows a list of all implemented commands and their meanings. The first command, the synchronization sequence, is described above. The second group of commands are the reference commands. A reference run command causes the stepping motor to make an initial run. It is used to establish a defined start position for the following position commands. The way the reference run is executed will be described later. There are two reference run commands. The difference is the turn direction of the stepping motor. This makes the circuit more flexible for different applications. The turn direction is coded in the 4 identifier bits.
Table 1. Bus Commands
High Byte Data Bus Command Synchronization Reference run (extend) Reference run (retract) New position (0 = full extension) New position (0 = full retraction) New position (testmode, 0 = full extension) New position (testmode, 0 = full retraction) 7 1 0 0 D8 D8 D8 D8 6 0 0 0 D9 D9 D9 D9 Mode 5 1 0 0 0 0 1 1 4 0 0 0 0 0 1 1 3 1 1 0 1 0 1 0 Identifier 2 0 0 1 0 1 0 1 1 1 0 1 0 1 0 1 0 0 1 0 1 0 1 0 7 1 0 0 D0 D0 D0 D0 6 0 0 0 D1 D1 D1 D1 5 1 0 0 D2 D2 D2 D2 4 0 0 0 D3 D3 D3 D3 Low Byte Data 3 1 0 0 D4 D4 D4 D4 2 0 0 0 D5 D5 D5 D5 1 1 0 0 D6 D6 D6 D6 0 0 0 0 D7 D7 D7 D7
The last class of commands are the position commands. Every new position will be sent as an absolute value. This makes the transmission more safe in terms of losing a position command. The next received command tells the stepping motor the right position again. For the position data there are 10 bits available (D0 to D9). The maximum possible step count to be coded with 10 bit is 1024. Though position commands up to 1024 will be executed, its prohibited to use values higher than 698, as this is the step count of the reference run. For details see chapter "Reference Run". There are 4 new position commands. They differ in the identifier and in the modus bits. The identifier fixes the turn direction. For test purposes there are new position commands with a different mode. In this mode the stepping motor works with a reduced coil current. This may be used for end tests in the production of the application. Any command with modus or identifier different to the first reference run will be ignored. Thus it is also not possible to change modus or identifier by performing a second reference run.
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Power-up Sequence
After power-up the circuit has to be synchronized and a reference run has to be executed before a position command can be carried out. Figure 9 shows a timing diagram on how the necessary sequences follow each other. Figure 9. Power-up Sequence
POWER UP SYNCHRONIZATION SEQUENCE REFERENCE RUN SEQUENCE POSITION 1 POSITION 2
1 MESSAGE FRAME
2
4
1
2
10
The first sequence is the synchronization sequence. Its pattern (Figure 6) should be sent at least 4 times to be sure that the following commands will be recognized. If there are distortions on the bus it is helpful to send this sequence more than 4 times. A RC lowpass filter at the bus pin (Figure 16) helps to reduce distortsions. After synchronization the stepping motor has to make the reference run to initialize its zero position. The first reference run will only be executed if the circuit recognizes this command three times in series. This function is implemented contributing to the importance of the reference run. After the reference run the circuit will switch to normal operation. To perform a reference run during normal operation, the command has to be sent only once. Figure 10 shows the state diagram for the implemented sequence processor.
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Figure 10. Flow Diagram for the Power-up Sequence
reset state
N synchronization
Y
idle state
N 3 successive reference run commands
Y
reference run
Y
new position?
N
cruise control
idle state
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Reference Run
In normal operation, new position commands are transmitted as absolute values. To drive the stepping motor to these absolute positions, the circuit has to know the motor's zero position. Therefore, the stepping motor has to perform a reference run after each power-up in which it is extended or retracted to its limit stop. Before the execution of the reference run, the motor is supplied with hold current. As the actual position is not known at the beginning of the reference run the whole position range has to be passed. To optimize performance for smaller actuators, the reference run has been reduced to 698 steps. Therefore, it is prohibited to access positions higher than 698, because in a following reference run the stepping motor would not reach its zero position. If it is necessary that the entire range up to position 1024 can be used, the reference run has to be executed twice. Since any command during reference run is ignored, the second reference command has to be sent about 2.4 s after the first command. To avoid any possible mistake, e.g., the loss of a step during the reference run or the bouncing at the limit stop, there is a special run to be executed. This is shown in Table 2. Table 2. Reference Run Course
Phase I Action Ramp up to 446 Hz step frequency Drive through the whole range (698 steps) Wait for 6 3300 s with the last coil current Perform another 6 steps with 3300 s Wait for 5 3300 s with the last coil current Set current to hold current; normal operation Int. Counter 704 703 702 701 700 to 11 10 9 8 7 to 6 6 5 to 0 0 varied
Steptime
3300 s 2895 s 2540 s 2240 s 2240 s 2240 s 2549 s 2895 s 3300 s 3300 s 3300 s 3300 s varied
Drive at constant speed Ramp down to minimum step frequency (303 Hz) II III IV V VI VII
Cruise Control
The travel operation control independently moves the stepping motor into its new position. To reach the new position as fast as possible but without abrupt velocity changes, the stepping motor is accelerated or slowed down depending on the difference between actual and nominal position. If this difference is huge the stepping frequency will increase (acceleration). When the new position is nearly reached, the frequency will decrease again (deceleration). In the case of a new nominal position opposite to the direction of the motion being from the microcontroller, the stepping frequency will decrease to its starting value (300 Hz) before the direction can turn. The cruise control is shown in Figure 11. The possible stepping frequencies for velocity control are shown in Table 3.
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Figure 11. Cruise Control
frequency
present frequency minimum frequency (300 Hz)
present position
nominal position time t+1
nominal positon time t
position
Table 3. Frequency Ramp
Number 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 Step Frequency (Hz) 303 345 394 446 493 583 575 673 649 680 714 741 769 800 826 855 877 901 926 952 980 1000 Step Time (s) 3300 2895 2540 2240 2030 1860 1740 1630 1540 1470 1400 1350 1300 1250 1210 1170 1140 1110 1080 1050 1020 1000
In addition to the actual step frequency there is a maximum step frequency up to which the actual step frequency can rise. To secure a correct operation at low supply voltages the maximum value for the stepping frequency is smaller at low voltages. If the supply voltage falls below the 9 V threshold, travel operation will suspend. To restart operation, the supply voltage has to rise above 10.5 V. The relation of the maximum step frequency and the supply voltage during operation is shown in Table 4.
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If the chip temperature exceeds the overtemperature warning threshold, the step speed is reduced to 300 Hz. If the chip temperature rises further the output driver is shut off. Table 4. Maximum Step Frequency
VBAT <9V 9 V to 9.5 V 9.5 V to 10 V 10 V to 10.5 V 10.5 V to 11 V > 11 V > 20 V Maximum Step Frequency at Rising Voltage No operation No operation No operation No operation 850 Hz (1.17 ms) 1000 Hz (1 ms) No operation Maximum Step Frequency (VBAT once > 10.5 V) No operation 300 Hz (3.33 ms) 500 Hz (2.03 ms) 680 Hz (1,47 ms) 850 Hz (1.17 ms) 1000 Hz (1 ms) No operation
Step Operation
The stepping motor is operated in halfstep-compensation mode. The current for both coils is shown in Figure 12. The current levels are increased when the temperature is below 0C to secure operation. For final tests at the end of the application production line the currents are reduced. Figure 12. Compensated Halfstep Operation
coil A
700mA 500mA
half steps
-500mA -700mA
coil B
700mA 500mA
1
2
3
4
5
6
7
8
half steps
-500mA -700mA
Chopper Current Control The chopper current control is shown in Figure 13. The current is turned on every 40 s
(25 kHz chopper frequency). The current flow in the H-bridge is shown in Figure 14a. After a blanking time of 2.5 s to suppress turn-on peaks the current is measured via the shunt voltage. As soon as the current has reached its nominal value it is turned off again. The current flow in this state is shown in Figure 14b.
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Figure 13. Chopper Current Control
turn on signal
Imax
coil current
flyback comparator
shunt resistor voltage
blanking time
Figure 14. Current Flow in Halfbridge
ON
OFF
ON
ON
OFF
ON
OFF
OFF
a)
b)
Exception Handling
During operation, different exceptional states or errors can arise to which the circuit must correspondingly react. These are described below: * Supply voltage below 9 V Travel operation is suspended for the duration of the undervoltage. The output current will be set to zero. When the supply voltage rises above 10.5 V, travel operation restarts. * Supply voltage above 20 V Travel operation is suspended for the duration of the undervoltage. The output current will be set to zero. When the supply voltage falls below 20 V, travel operation restarts. * Overtemperature warning The maximum stepping speed is reduced to 300 Hz. This ensures a safe shut-off procedure if the temperature increases to shut-off temperature. * Overtemperature shut-off
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Travel operation is suspended when overtemperature is detected. An error signal is sent to the bus master via the bus. Operation can only restart after the supply voltage is shut off. * Interruption of a stepping motor winding The motor windings are only checked for interruption when supplied with hold current, not during drive operation. The corresponding output is shut off. The other coil winding is supplied with hold current. An error signal is sent. Operation can only restart after the supply voltage is shut off. * Short circuit of a stepping motor winding The corresponding output is shut off. The other coil winding is supplied with hold current. An error signal is sent. Operation can only restart after the supply voltage is shut off. * Short circuit of an output to ground or VBAT The corresponding output is shut off. The other coil winding is supplied with hold current. An error signal is sent. Operation can only restart after the supply voltage is shut off. An error signal is sent to the microcontroller by clamping the bus to ground for 3 seconds. If the error should occur during a data transmission, the above described reactions will happen immediately except for the clamping. This will take place about 200 s after the end of the stopbit of the lowbyte to guarantee a correct command recognintion in the second headlamp. The error signal timing is shown in Figure 15. Figure 15. Error Signal Timing
MESSAGE FRAME ca. 9.2 ms ERROR RESPONSE 3s
1 Buslevel 0
Absolute Maximum Ratings
Parameters Power supply (t < 400 ms) DC power supply DC output current BUS input voltage Human body model Charged device model Storage temperature Operating temperature Maximum junction temperature Symbol VBAT VBAT IOUT VBUS ESD ESD TStg Top Tjmax Value -0.3 to +45 -0.3 to +28 1.1 -0.3 to VBAT +0.3 2 500 -55 to +150 -40 to +105 +150 Unit V V A V kV V C C C
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Thermal Resistance
Parameters Thermal resistance junction-case Thermal resistance junction-ambient Symbol RthJC RthJA Value 5 35 Unit K/W K/W
Operating Range
Parameters Power supply range Operating temperature range Symbol VBAT Top Value 7 to 20 -40 to +105 Unit V C
Electrical Characteristics
No. 1 1.1 1.2 1.3 1.4 2 2.1 2.2 2.3 2.4 2.5 2.6 3 3.1 4 4.1 4.2 5 5.1 Parameters Supply Supply current Supply voltage VDD voltage VDD voltage Bus Port Threshold voltage Threshold voltage Hysteresis Input current Saturation voltage Pulldown current Oscillator Frequency Reference Reference voltage Reference voltage Full Bridges RDSON RDSON of half-bridge 3, 5, 17, 20 RDSon 1.2 1.7 W A RSET = 20 kW 1% VBAT = 7 V 26 26 VRSET_13V VRSET_7V 2.4 2.3 2.5 2.5 2.6 2.6 V V A A COS = 100 pF 5% RSET = 20 kW 1% 27 FOSC_13 340 400 460 kHz A VBUS = 0 V IBUS = 2 mA, bus clamping At error condition VBAT = 12.0 V, rising edge VBAT = 12 V, falling edge 22 22 22 22 22 22 VLH_BUS_12 VHL_BUS_12 VHYS_BUS12 IOUT_BUS_8 VSAT_BUS_7 IPulldwn_7 2 -400 5.5 4.5 6.5 5.5 1 -300 -220 0.5 7.5 6.5 V V V A V mA A A A A A A VBAT = 7.0 V VBAT = 14 V (no motor current) Normal operation 1, 7, 15, 21 1, 7, 15, 21 23 23 I_total VBATsup VVDD_13V VVDD_7V 7.0 4.9 4.8 5.0 5.0 4 7 20 5.1 5.1 mA V V V A C A A Test Conditions
Pin
Symbol
Min.
Typ.
Max.
Unit
Type*
*) Type means: A = 100% tested, B = 100% correlation tested, C = Characterized on samples, D = Design parameter Note: 1. cmd = command
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Electrical Characteristics (Continued)
No. 5.2 5.3 5.4 5.5 5.6 5.7 5.8 5.9 5.10 5.11 6 6.1 6.2 6.3 6.4 6.5 6.6 6.7 6.8 6.9 6.10 6.11 6.12 Parameters Output current Output current Output current Output current Output current Output current Output current Overcurrent threshold Overcurrent threshold Chopper frequency Voltage Comparators Threshold voltage Threshold voltage Hysteresis Threshold voltage Threshold voltage Hysteresis Threshold voltage Threshold voltage Hysteresis Threshold voltage Threshold voltage Hysteresis 9.0 V comparator, rising edge 9.0 V comparator, falling edge 9.0 V comparator 9.5 V comparator, rising edge 9.5 V comparator, falling edge 9.5 V comparator 10.0 V comparator, rising edge 10.0 V comparator, falling edge 10.0 V comparator 10.5 V comparator, rising edge 10.5 V comparator, falling edge 10.5 V comparator 1, 7, 15, 21 1, 7, 15, 21 1, 7, 15, 21 1, 7, 15, 21 1, 7, 15, 21 1, 7, 15, 21 1, 7, 15, 21 1, 7, 15, 21 1, 7, 15, 21 1, 7, 15, 21 1, 7, 15, 21 1, 7, 15, 21 V9_UP V9_DOWN V9_HYS V9_5_UP V9_5_DOWN V9_5_HYS V10_UP V10_DOWN V10_HYS V10_5_UP V10_5_DOWN V10_5_HYS 8.8 8.6 60 9.3 9.1 60 9.8 9.6 60 10.35 10.15 60 9.1 8.9 200 9.6 9.4 200 10.1 9.9 200 10.65 10.45 200 9.4 9.2 340 9.9 9.7 340 10.4 10.2 340 10.95 10.75 340 V V mV V V mV V V mV V V mV A A A A A A A A A A A A Test Conditions Output stage off Hold mode Test mode Normal mode Normal mode (T <0C) Halfstep compensation Halfstep compensation (T < 0C) Highside switch Lowside switch
Pin
Symbol ILEAK VSHUNT18 VSHUNT99 VSHUNT182 VSHUNT128 VSHUNT257 VSHUNT309 IOC_H IOC_L
Min.
Typ.
Max. 10
Unit A mA mA mA mA mA mA A A fcos
Type* A B B B B B B A B D
3, 5, 17, 20 3, 5, 17, 20 3, 5, 17, 20 3, 5, 17, 20 3, 5, 17, 20 3, 5, 17, 20 3, 5, 17, 20 3, 5, 17, 20 3, 5, 17, 20
40 240 500 600 700 840
55 300 550 660 780 936 1.6 1.6 1/16
200 360 600 720 860 1040
*) Type means: A = 100% tested, B = 100% correlation tested, C = Characterized on samples, D = Design parameter Note: 1. cmd = command
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Electrical Characteristics (Continued)
No. 6.13 6.14 6.15 6.16 6.17 6.18 6.19 6.20 6.21 6.22 Parameters Threshold voltage Threshold voltage Hysteresis Threshold voltage Threshold voltage Hysteresis Threshold voltage Threshold voltage Hyteresis Distance Test Conditions 11.0 V comparator, rising edge 11.0 V comparator, falling edge 11.0 V comparator 20.0 V comparator, rising edge 20.0 V comparator, falling edge 20.0 V comparator Motor disable (falling voltage) Motor enable (rising voltage) Undervoltage turn off 9.5 V to 9 V comparator rising edges 9.5 V to 9 V comparator falling edges 10 V to 9.5 V comparator rising edges 10 V to 9.5 V comparator falling edges 10.5 V to 10 V comparator rising edges 10.5 V to 10 V comparator falling edges 11 V to 10.5 V comparator rising edges 11 V to 10.5 V comparator falling edges fcos = 340 to 460 kHz, full synchronization
Pin
Symbol V11_UP V11_DOWN V11_HYS V20_UP V20_DOWN V20_HYS V9_DOWN V10_5_UP MDIS_HYS D9.5-9_R
Min. 10.8 10.6 60 19.7 19.25 200 8.6 10.35 1.3 300
Typ. 11.1 10.9 200 20.2 19.75 450 8.9 10.65 1.7 500
Max. 11.4 11.2 340 20.7 20.25 750 9.2 10.95 2.1 700
Unit V V mV V V mV V V V mV
Type* A A A A A A A A A A
1, 7, 15, 21 1, 7, 15, 21 1, 7, 15, 21 1, 7, 15, 21 1, 7, 15, 21 1, 7, 15, 21 1, 7, 15, 21 1, 7, 15, 21 1, 7, 15, 21 1, 7, 15, 21 1, 7, 15, 21 1, 7, 15, 21 1, 7, 15, 21 1, 7, 15, 21 1, 7, 15, 21 1, 7, 15, 21 1, 7, 15, 21
6.23
Distance
D9.5-9F
300
500
700
mV
A
6.24
Distance
D10-9.5R
300
500
700
mV
A
6.25
Distance
D10-9.5F
300
500
700
mV
A
6.26
Distance
D10.5-10R
300
500
700
mV
A
6.27
Distance
D10.5-10F
300
500
700
mV
A
6.28
Distance
D11-10.5R
300
500
700
mV
A
6.29
Distance
D11-10.5F
300
500
700
mV
A
7 7.1
Timing Baud rate 22 Baud 2350 2400 2450 Baud C, D
*) Type means: A = 100% tested, B = 100% correlation tested, C = Characterized on samples, D = Design parameter Note: 1. cmd = command
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Electrical Characteristics (Continued)
No. 7.2 7.3 7.4 8 8.1 Parameters Delay time Pause time Clamping time Logic Reference run detection Synchronization Thermal Values Thermal prewarning Hysteresis Thermal shut down Thermal current boost Hysteresis Thermal currrent boost Thermal prewarning T_150 T_150HYS T_160 T_0 T_0_HYS 150 10 160 0 10 C C C C C B B B B B Commands in series to execute first reference run 15% oscillator tolerance Ref3 3 3 3 cmd (1) cmd (1) D Test Conditions 2 following commands Between high and low byte Bus error clamping
Pin
Symbol TD TP Tcl
Min. 5
Typ.
Max.
Unit ms
Type* C, D C, D C, D
22 22 22
0 3
s s
8.2 9 9.1 9.2 9.3 9.5 9.6
Sync
4
D
*) Type means: A = 100% tested, B = 100% correlation tested, C = Characterized on samples, D = Design parameter Note: 1. cmd = command
Soldering Recommendations
Parameters Maximum heating rate Peak temperature in preheat zone Duration of time above melting point of solder Peak reflow temperature Maximum cooling rate Symbol TD TPH tMP TPeak TPeak Value 1 to 3 100 to 140 minimum 10 maximum 75 220 to 225 2 to 4 Unit C/s C s C C/s
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Figure 16. Application Circuit
GND
IGN
D1 C5 C4
BUS
C6
R2 C3 R3 C1 R1
28 1 2 3 4 5 6 7 27 26 25 24 23 22 21 20 19 18 17 16 15
C2
R4
MLP 7x7mm 0.8mm pitch ATA6830 28 lead
8
9
10
11
12
13
14
SM
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Table 5. Bill of Material
Reference C1 C2 C3 C4 C5 C6 D1 R1 R2 R3 R4 Component Oscillator capacitor Bus input capacitor Ceramic capacitor Capacitor Capacitor Capacitor Rectifier Reference resistor Bus input resistor Shunt resistor side A Shunt resistor side A Value 100 pF, 5% 1 nF 100 nF 10 F 100 F 100 nF - 20 kW, 1% 1 kW, 5% 0.24 W, 5% 0.24 W, 5%
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Ordering Information
Extended Type Number ATA6830-PKH Package HP-VFQFP-N28 Remarks 7 mm 7 mm
Package Information
The package is a thermal power package MLF 7 7 with a soldered leadframe and 28 pins. The overall size is 7 7 mm2.
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Atmel Operations
Memory
2325 Orchard Parkway San Jose, CA 95131 TEL 1(408) 441-0311 FAX 1(408) 436-4314
RF/Automotive
Theresienstrasse 2 Postfach 3535 74025 Heilbronn, Germany TEL (49) 71-31-67-0 FAX (49) 71-31-67-2340 1150 East Cheyenne Mtn. Blvd. Colorado Springs, CO 80906 TEL 1(719) 576-3300 FAX 1(719) 540-1759
Europe
Atmel Sarl Route des Arsenaux 41 Case Postale 80 CH-1705 Fribourg Switzerland TEL (41) 26-426-5555 FAX (41) 26-426-5500
Microcontrollers
2325 Orchard Parkway San Jose, CA 95131 TEL 1(408) 441-0311 FAX 1(408) 436-4314 La Chantrerie BP 70602 44306 Nantes Cedex 3, France TEL (33) 2-40-18-18-18 FAX (33) 2-40-18-19-60
Biometrics/Imaging/Hi-Rel MPU/ High Speed Converters/RF Datacom
Avenue de Rochepleine BP 123 38521 Saint-Egreve Cedex, France TEL (33) 4-76-58-30-00 FAX (33) 4-76-58-34-80
Asia
Room 1219 Chinachem Golden Plaza 77 Mody Road Tsimhatsui East Kowloon Hong Kong TEL (852) 2721-9778 FAX (852) 2722-1369
ASIC/ASSP/Smart Cards
Zone Industrielle 13106 Rousset Cedex, France TEL (33) 4-42-53-60-00 FAX (33) 4-42-53-60-01 1150 East Cheyenne Mtn. Blvd. Colorado Springs, CO 80906 TEL 1(719) 576-3300 FAX 1(719) 540-1759 Scottish Enterprise Technology Park Maxwell Building East Kilbride G75 0QR, Scotland TEL (44) 1355-803-000 FAX (44) 1355-242-743
Japan
9F, Tonetsu Shinkawa Bldg. 1-24-8 Shinkawa Chuo-ku, Tokyo 104-0033 Japan TEL (81) 3-3523-3551 FAX (81) 3-3523-7581
e-mail
literature@atmel.com
Web Site
http://www.atmel.com
(c) Atmel Corporation 2003. Atmel Corporation makes no warranty for the use of its products, other than those expressly contained in the Company's standard warranty which is detailed in Atmel's Terms and Conditions located on the Company's web site. The Company assumes no responsibility for any errors which may appear in this document, reserves the right to change devices or specifications detailed herein at any time without notice, and does not make any commitment to update the information contained herein. No licenses to patents or other intellectual property of Atmel are granted by the Company in connection with the sale of Atmel products, expressly or by implication. Atmel's products are not authorized for use as critical components in life support devices or systems.
Atmel (R) is the registered trademark of Atmel. Other terms and product names may be the trademarks of others. Printed on recycled paper.
4575B-BCD-01/03 xM

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