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Memory ICs
BR9080AF-W / BR9080ARFV-W / BR9080ARFVM-W / BR9016AF-W / BR9016ARFV-W / BR9016ARFVM-W
8k, 16k bit EEPROMs for direct connection to serial ports
BR9080AF-W / BR9080ARFV-W / BR9080ARFVM-W / BR9016AF-W / BR9016ARFV-W / BR9016ARFVM-W
The BR9080A and BR9016A series are serial EEPROMs that can be connected directly to a serial port and can be erased and written electrically. Writing and reading is performed in word units, using four types of operation commands. Communication occurs though CS, SK, DI, and DO pins, WC pin control is used to initiate a write disabled state, enabling these EEPROMs to be used as one-time ROMs. During writing, operation is checked via the internal status check.
!Applications Movie, camera, cordless telephones, car stereos, VCRs, TVs, DIP switches, and other battery-powered equipment requiring low voltage and low current
!Features 1) BR9080AF-W / ARFV-W / ARFVM-W (8k bit) : 512 words x16 bits BR9016AF-W / ARFV-W / ARFVM-W (16k bit) : 1024 words x 16bits 2) Single power supply operation 3) Serial data input and output 4) Automatic erase-before-write 5) Low current consumption Active (5V) : 5mA (max.) Standby (5V) : 3A (max.) 6) Noise filter built into SK pin 7) Write protection when VCC is low Inhibition on inadvertant write with the WC pin. 8) SOP8 / SSOP-B8 / MSOP8 9) High reliability CMOS process 10) 100,000 ERASE / WRITE cycles 11) 10 years Data Retention
1/12
Memory ICs
!Block diagram
BR9080AF-W / BR9080ARFV-W / BR9080ARFVM-W / BR9016AF-W / BR9016ARFV-W / BR9016ARFVM-W
INSTRUCTION DECODE
R/B
CS
CONTROL CLOCK GENERATION DETECT SUPPLY VOLTAGE WRITE DISABLE HIGH VOLTAGE GENERATOR
SK
WC
DI
INSTRACTION REGISTER
ADD BUFFER
9bit
ADD DECORDER
9bit
8,192 bit EEPROM
DO
DATA REGISTER
16bit
R/W AMPS
16bit
BR9016A is 10bit, 16,384bit BR9080A is 9bit, 8,192bit
!Pin descriptions
VCC R/B WC GND WC GND DO DI VCC R / B WC GND
CS
SK
DI
DO
R/B
VCC
CS
SK
CS
SK
DI
DO
BR9080ARFVM : MSOP8 BR9016ARFVM
BR9080AF : SOP8 BR9016AF Fig.1
BR9080ARFV : SSOP-B8 BR9016ARFV
Pin No. MSOP / SSOP 1 2 3 4 5 6 7 8 SOP 3 4 5 6 7 8 1 2
Pin name CS SK DI DO GND WC R/B VCC Chip Select Control Serial Data Clock Input
Function
Op code, address, Serial Data Input Serial Data Output Ground 0V Write Control Input READY / BUSY Output Power supply
2/12
Memory ICs
BR9080AF-W / BR9080ARFV-W / BR9080ARFVM-W / BR9016AF-W / BR9016ARFV-W / BR9016ARFVM-W
Symbol VCC Limits -0.3+7.0 SOP8 4501 3002 3103 C C V mW Unit V
!Absolute maximum ratings (Ta=25C)
Parameter Supply voltage
Power dissipation
Pd
SSOP-B8 MSOP8
Storage temperature Operation temperature Input voltage
Tstg Topr -
-65+125 -40+85 -0.3VCC+0.3
1 Reduced by 4.5mW for each increase in Ta of 1C over 25C. 2 Reduced by 3.0mW for each increase in Ta of 1C over 25C. 3 Reduced by 3.1mW for each increase in Ta of 1C over 25C.
!Recommended operating conditions (Ta=25C)
Parameter Power supply voltage Input voltage WRITE READ VIN Symbol VCC Min. 2.7 2.7 0 Typ. - - - Max. 5.5 5.5 VCC Unit V V V
3/12
Memory ICs
BR9080AF-W / BR9080ARFV-W / BR9080ARFVM-W / BR9016AF-W / BR9016ARFV-W / BR9016ARFVM-W
!Electrical characteristics BR9080AF-W / ARFV-W / ARFVM-W, BR9016AF-W / ARFV-W / ARFVM-W : 5V (Unless otherwise noted, Ta=-4085C, VCC=2.7V5.5V)
Parameter Input low level voltage 1 Input high level voltage 1 Input low level voltage 2 Input high level voltage 2 Output low level voltage Output high level voltage Input leak current Output leak current Operating current Standby current SK frequency Symbol VIL1 VIH1 VIL2 VIH2 VOL VOH ILI ILO ICC1 ICC2 ISB fSK Min. - 0.7xVCC - 0.8xVCC 0 VCC-0.4 -1 -1 - - - - Typ. - - - - - - - - - - - - Max. 0.3xVCC - 0.2xVCC - 0.4 VCC 1 1 5 3 3 2 Unit V V V V V V A A mA mA A MHz DI pin DI pin CS, SK, WC pin CS, SK, WC pin IOL=2.1mA IOH=-0.4mA VIN=0VVCC VOUT=0VVCC, CS=VCC fSK=2MHz tE / W=10ms (WRITE) fSK=2MHz (READ) CS / SK / DI / WC=VCC DO, R / B=OPEN - Conditions
BR9080AF-W / ARFV-W / ARFVM-W, BR9016AF-W / ARFV-W / ARFVM-W : 3V (Unless otherwise noted, Ta=-4085C, VCC=2.7V3.3V)
Parameter Input low level voltage 1 Input high level voltage 1 Input low level voltage 2 Input high level voltage 2 Output low level voltage Output high level voltage Input leak current Output leak current Operating current Standby current SK frequency Symbol VIL1 VIH1 VIL2 VIH2 VOL VOH ILI ILO ICC1 ICC2 ISB fSK Min. - 0.7xVCC - 0.8xVCC 0 VCC-0.4 -1 -1 - - - - Typ. - - - - - - - - - - - - Max. 0.3xVCC - 0.2xVCC - 0.4 VCC 1 1 3 0.75 2 2 Unit V V V V V V A A mA mA A MHz DI pin DI pin CS, SK, WC pin CS, SK, WC pin IOL=100A IOH=-100A VIN=0VVCC VOUT=0VVCC, CS=VCC fSK=2MHz tE / W=10ms (WRITE) fSK=2MHz (READ) CS / SK / DI / WC=VCC DO, R / B=OPEN - Conditions
Not designed for radiation resistance
4/12
Memory ICs
BR9080AF-W / BR9080ARFV-W / BR9080ARFVM-W / BR9016AF-W / BR9016ARFV-W / BR9016ARFVM-W
!Operating timing characteristics BR9080AF-W / ARFV-W / ARFVM-W, BR9016AF-W / ARFV-W / ARFVM-W (Unless otherwise noted, Ta=-4085C, VCC=2.7V5.5V)
Parameter
CS setup time CS hold time Data setup time Data hold time DO rise delay time DO fall delay time Self-timing programming cycle CS minimum high level time READY / BUSY display valid time
Symbol fCSS tCSH tDIS tDIH tPD1 tPD0 tE / W tCS tSV tOH tWH tWL tWCS tWCH
Min. 100 100 100 100 - - - 250 - 0 230 230 0 0
Typ. - - - - - - - - - - - - - -
Max. - - - - 150 150 10 - 150 150 - - - -
Unit ns ns ns ns ns ns ms ns ns ns ns ns ns ns
Time when DO goes HIGH-Z (via CS) Data clock high level time Data clock low level time Write control setup time Write control hold time
!Timing chart Synchronous Data Input Output Timing
CS tCS tWH
tCSS
tCSH
tDIH SK tWL tDIS DI
tPD DO
tPD
tOH
WC
Fig.2
* Input data are clocked in to DI at the rising edge of the clock (SK). * Output data will toggle on the falling edge of the SK clock. * The WC pin does not have any effect on the READ, EWEN and EWDS operations.
5/12
Memory ICs
!Circuit operation (1) Command mode BR9080A
Instruction
Read (READ) Write (WRITE)
BR9080AF-W / BR9080ARFV-W / BR9080ARFVM-W / BR9016AF-W / BR9016ARFV-W / BR9016ARFVM-W
Start Bit 1010 1010 1010 1010
Op Code 100 A0 010 A0 0011 0000
Address A1 A2 A3 A4 A5 A6 A7 A8 A1 A2 A3 A4 A5 A6 A7 A8
Data D0 D1 - D14 D15
Write enable (WEN) Write disable (WDS)
: Means either VIH or VIL Address and data are transferred from LSB.

BR9016A
Instruction
Read (READ) Write (WRITE)
Start Bit 1010 1010 1010 1010
Op Code 10 A0 A1 01 A0 A1 0011 0000
Address A2 A3 A4 A5 A6 A7 A8 A9 A2 A3 A4 A5 A6 A7 A8 A9
Data D0 D1 - D14 D15
Write enable (WEN) Write disable (WDS)
: Means either VIH or VIL Address and data are transferred from LSB.

(2) Writing enabled / disabled
H
SK
L H
1
4
8 ENABLE = 11 DISABLE = 00
12
16
CS
L H
DI
L
1
0
1
0
0
0
HIGH-Z
DO
H
R/B WC
High or LOW
Fig.3
1) When CS is "HIGH" during power up, BR9080AF-W / ARFV-W / ARFVM-W, BR9016AF-W / ARFV-W / ARFVM-W comes up in the write disabled (WDS) state. In order to be programmable, it must receive a write enable (WEN) instruction. The device remains programmable until a disable (WDS) instruction is entered, or until it is powered down. 2) It is unnecessary to add the clock after 16th clock.
6/12
Memory ICs
BR9080AF-W / BR9080ARFV-W / BR9080ARFVM-W / BR9016AF-W / BR9016ARFV-W / BR9016ARFVM-W
(3) Read cycle BR9080AF-W / ARFV-W / ARFVM-W
SK
H 1 L tCS H 4 8 16 32 48
CS
L H STANDBY 1 L HIGH-Z HIGH-Z D0 H D15 D0 D15 tOH Read Data (n) High or LOW Read Data (n+1) 0 1 0 1 0 0 A0 A1 A7 A8
DI
DO
R/B WC
Fig.4 BR9080AF-W / ARFV-W / ARFVM-W
BR9016 AF-W / ARFV-W / ARFVM-W
SK
H 1 L tCS H 4 8 16 32 48
CS
L H STANDBY 1 L HIGH-Z HIGH-Z D0 H D15 D0 D15 tOH Read Data (n) High or LOW Read Data (n+1) 0 1 0 1 0 A0 A1 A2 A8 A9
DI
DO
R/B WC
Fig.5 BR9016AF-W / ARFV-W / ARFVM-W
1) After the fall of the 16th clock pulse, 16-bit data is output from the DO pin in synchronization with the falling edge of the SK signal. (DO output changes at a time lag of tPD0, tPD1 because of internal circuit delay following the falling edge of the SK signal. During the tPD0 and tPD1 timing, the tPD time should be assured before data is read, to avoid the previous data being lost. See the synchronized data input / output timing chart in Fig.2.) 2) The data stored in the next address is clocked out of the device on the falling edge of 32nd clock. The data stored in the upper address every 16 clocks is output sequentially by the continual SK input. Also the read operation is reset by CS High.
7/12
Memory ICs
BR9080AF-W / BR9080ARFV-W / BR9080ARFVM-W / BR9016AF-W / BR9016ARFV-W / BR9016ARFVM-W
(4) Write cycle BR9080AF-W / ARFV-W / ARFVM-W
SK
H 1 L H 4 8 16 32
CS
L H tCS 1 L HIGH-Z HIGH-Z tSV H tE-W 0 1 0 0 1 0 A0 A1 A7 A8 D0 D15
DI
DO R/B WC
tWCS
tWCH
Fig.6 BR9080AF-W / ARFV-W / ARFVM-W
BR9016 AF-W / ARFV-W / ARFVM-W
SK
H 1 L H 4 8 16 32
CS
L H tCS 1 L HIGH-Z HIGH-Z tSV H tE-W 0 1 0 0 1 A0 A1 A2 A8 A9 D0 D15
DI
DO R/B WC
tWCS
tWCH
Fig.7 BR9016AF-W / ARFV-W / ARFVM-W
1) At the rising edge of 32nd clock, R / B pin will be come out "LOW" after the specified time delay (tSV). 2) From above edge R / B will indicate the ready / busy status of the chip: "LOW" indicated programming is all in progress: "HIGH" indicates the write cycle is complete and this part is ready for another instruction. 3) During the input of Write command, CS must be "LOW". However, once the write operation started, CS could be either "HIGH" or "LOW". 4) If WC becomes "HIGH" during Write Cycle, the write operation is halted. In this case, the address data in writing is no guaranteed. It is necessary to rewrite it.
8/12
Memory ICs
BR9080AF-W / BR9080ARFV-W / BR9080ARFVM-W / BR9016AF-W / BR9016ARFV-W / BR9016ARFVM-W
(5) READY / BUSY display (R / B pin and DO pin: BR9080AF-W / ARFV-W / ARFVM-W, BR9016AF-W / ARFV-W / ARFVM-W) 1) This display outputs the internal status signal; the R / B pin outputs the HIGH or LOW status at all times. The display can also be output from the DO pin. Following completion of the writing command, if CS falls while SK is LOW, either HIGH or LOW is output. (The display can also be output without using the R / B pin, leaving it open.) 2) When writing data to a memory cell, the READY / BUSY display is output from the rise of the 32nd clock pulse of the SK signal after tSV, from the R / B pin. R / B display = LOW: writing in progress (The internal timer circuit is activated, and after the tE / W timing has been created, the timer circuit stops automatically. Writing of data to the memory cell is done during the tE / W timing, during which time other commands cannot be received.) R / B display = HIGH: command standby state (Writing of data to the memory cell has been completed and the next command can be received.)
CS
SK Clock
DI Write command tPD HIGH-Z DO BUSY READY tOH HIGH-Z
R/B READY BUSY READY
Fig.8 R / B Status Output timing chart
1) DO will output R / B status after CS is held low during SK=L, until CS is held high. Note : The document may be strategic technical data subject to COCOM regulations.
9/12
Memory ICs
BR9080AF-W / BR9080ARFV-W / BR9080ARFVM-W / BR9016AF-W / BR9016ARFV-W / BR9016ARFVM-W
!Operation notes (1) Turning the power supply on and off 1) When the power supply is turned on and off, CS should be set to HIGH (=VCC). 2) When CS is LOW, the command input reception state (active) is entered. If the power supply is turned on in this state, erroneous operations and erroneous writing can occur because of noise and other factors. To avoid this, make sure CS is set to HIGH (=VCC) before turning on the power supply. (Good example) Here, the CS pin is pulled up to VCC. When turning off the power supply, wait at least 10msec before turning it on again. Failing to observe this condition can result in the internal circuit failing to be reset when the power supply is turned on. (Bad example) CS is LOW when the power supply is turned on or off. In this case, because CS remains LOW, the EEPROM may perform erroneous operations or write erroneous data because of noise or other factors. * Please be aware that the case shown in this example can also occur if CS input is HIGH-Z.
VCC VCC GND VCC CS GND
Good example Bad example
Fig.9
(2) Noise countermeasures 1) SK noise If noise occurs at the rise of the SK clock input, the clock is assumed to be excessive, and this can cause malfunction because the bits are out of alignment. 2) WC noise During a writing operation, noise at the WC pin can be erroneously judged to be data, and this can cause writing to be forcibly interrupted. 3) VCC noise Noise and surges on the power supply line can cause malfunction. We recommend installing a bypass capacitor between the power supply and ground to eliminate this problem.
10/12
Memory ICs
(3) Canceling modes 1) Read commands
SK
BR9080AF-W / BR9080ARFV-W / BR9080ARFVM-W / BR9016AF-W / BR9016ARFV-W / BR9016ARFVM-W
32 Clock
CS
DI
Start bit 4 bits
Operating code 4 bits
Address 8 bits 16 bits
DO
DO
Data
D15
Cancel can be performed for the entire read mode space
WC
HIGH or LOW
Fig.10
Cancellation method: CS HIGH
2) Write commands
SK
32 Clock
CS
DI
Start bit 4 bits
Operating code 4 bits
Address 8 bits
DO
Data 16 bits
D15
tE / W R/B
a b c d
WC
Fig.11
Canceling methods a : Canceled by setting CS HIGH. The WC pin is not involved. b : If the WC pin goes HIGH for even a second, writing is forcibly interrupted. Cancellation occurs even if the CS pin is HIGH. At this point, data has not been written to the memory, so the data in the designated address has not yet been changed. c : The operation is forcibly canceled by setting the WC pin to HIGH or turning off the power supply (although we do not recommend using this method). The data in the designated address is not guaranteed and should be written once again. d : If CS is set to HIGH while the R / B signal is HIGH (following the tE / W timing), the IC is reset internally, and waits for the next command to be input.
11/12
Memory ICs
BR9080AF-W / BR9080ARFV-W / BR9080ARFVM-W / BR9016AF-W / BR9016ARFV-W / BR9016ARFVM-W
!External dimension (Units : mm)
BR9080ARFVM-W BR9016ARFVM-W BR9080AF BR9016AF
5.0 0.2
2.90.1
8
5
0.290.15 0.60.2
4.00.2
2.80.1
4.4 0.2
8
5
6.2 0.3
1
4
1
4
0.475
0.145-0.03 0.22+0.05 -0.04
+0.05
0.9Max. 0.750.05 0.080.05
1.5 0.1
0.11
0.08 M
1.27 0.4 0.1
0.3Min. 0.15
0.65
0.08 S
MSOP8
SOP8
BR9080ARFV BR9016ARFV
3.0 0.2 8 5
6.4 0.3
4.4 0.2
1
4
0.22 0.1
0.1 1.15 0.1
(0.52) 0.65
0.3Min. 0.1
SSOP-B8
0.15 0.1
0.15 0.1
12/12
Appendix
Notes
No technical content pages of this document may be reproduced in any form or transmitted by any means without prior permission of ROHM CO.,LTD. The contents described herein are subject to change without notice. The specifications for the product described in this document are for reference only. Upon actual use, therefore, please request that specifications to be separately delivered. Application circuit diagrams and circuit constants contained herein are shown as examples of standard use and operation. Please pay careful attention to the peripheral conditions when designing circuits and deciding upon circuit constants in the set. Any data, including, but not limited to application circuit diagrams information, described herein are intended only as illustrations of such devices and not as the specifications for such devices. ROHM CO.,LTD. disclaims any warranty that any use of such devices shall be free from infringement of any third party's intellectual property rights or other proprietary rights, and further, assumes no liability of whatsoever nature in the event of any such infringement, or arising from or connected with or related to the use of such devices. Upon the sale of any such devices, other than for buyer's right to use such devices itself, resell or otherwise dispose of the same, no express or implied right or license to practice or commercially exploit any intellectual property rights or other proprietary rights owned or controlled by ROHM CO., LTD. is granted to any such buyer. Products listed in this document use silicon as a basic material. Products listed in this document are no antiradiation design.
The products listed in this document are designed to be used with ordinary electronic equipment or devices (such as audio visual equipment, office-automation equipment, communications devices, electrical appliances and electronic toys). Should you intend to use these products with equipment or devices which require an extremely high level of reliability and the malfunction of with would directly endanger human life (such as medical instruments, transportation equipment, aerospace machinery, nuclear-reactor controllers, fuel controllers and other safety devices), please be sure to consult with our sales representative in advance. About Export Control Order in Japan Products described herein are the objects of controlled goods in Annex 1 (Item 16) of Export Trade Control Order in Japan. In case of export from Japan, please confirm if it applies to "objective" criteria or an "informed" (by MITI clause) on the basis of "catch all controls for Non-Proliferation of Weapons of Mass Destruction.
Appendix1-Rev1.0

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