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MDT80C04
1. General Description 4. Pin Assignment
The MDT80C04 is a Low Cost Scrolling Mouse Controller for PS/2 (3D,2D) only. The auto resistance matching circuits are built in to prevent the adjustment in the resistance of
MDT80C04A1P / MDT80C04A1S
X1 X2 Y1 Y2 Vdd NC OSCRH OPT 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 Z2 Z1 CLK DATA Vss L M R
photo-sensors during manufacture.
2. Features
l l l l l Compatible with IBM PS/2 mouse. Compatible with Microsoft PS/2 scrolling mouse. Internal Power-On reset (POR). Auto resistance matching circuit for X1 X2 Y1 Y2. Internal RC oscillation about 6.5MHz ~7.5MHz . external resistor to adjust internal RC frequency l l Motion Detector Sample Rate 25KHZ. Three key-switches and six photo-couples inputs, or three key-switches and one rotate switch inputs, four photo-couples inputs. l l Low power dissipation. 2 type Z direction input. 1. Photo couples input Z/2 2. Mechanical input Z/2 l Cost SavingG PIN DIP, 16 PIN SOP Package 16
MDT80C04A2P/MDT80C04A2S
Vdd OPT Z1 Z2 CLK DATA NC Vss 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 OSCRL Y2 Y1 X2 X1 L M R
3. Applications
2D/3D PS/2 scrolling mouse
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MDT80C04
5. Pin Function Description
Symbol X1 X2 Y1 Y2 Vdd N/C OSCRH OSCRL OPT I I I I/O I I I I +5V No connect Connect a resistor to Vdd to adjust internal RC freq. for A1. Connect a resistor to Vss to adjust internal RC freq. for A2. Input pin with 100K ohm pull-high. =1 3D mouse =0 2D mouse R M L Vss DATA I/O I I I Ground Connect to 8042 auxiliary port DATA line in PS/2 mode. Internal 10K ohm pull high. CLK I/O Connect to 8042 auxiliary port CLK line in PS/2 mode. Internal 10K ohm pull high. Z1 Z2 I I Z-axis input for Photo Sensor or Mechanical resistors. Three Key-switches inputs. Internal 50K ohm pull-high for A1 and 50K pull-low. for A2 Connect to photo sensors for X,Y Motion detect. Function Description
6.Data Reporting 2DG
Bit 7 Byte 1 Byte 2 Byte 3 Y ovfl Bit 6 X ovfl Bit 5 Y sign Bit 4 X sign X data Y data Bit 3 1 Bit 2 Middle Bit1 Right Bit0 Left
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MDT80C04
3DG
Bit 7 Byte 1 Byte 2 Byte 3 Byte 4 0 Bit 6 0 Bit 5 Y7 Bit 4 X7 X data Y data Z data Bit 3 1 Bit 2 Middle Bit1 Right Bit0 Left
7. PS/2 Mouse Commands:
The following table list the commandsG 8042 send FF FE F6 F5 F4 F3, XX F2 F0 EE EC EB EA E9 E8, XX E7 E6 IN DETAIL: (a). Reset (FF) The MDT80C04 reset to initial mode as power on and transmit FA, AA, 00 to system 8042. Then set default states as below : sampling rateG 100 reports/s 2 dots/count non-autospeed stream mode disable Reset Resend Set Default Disable Enable Set Sampling Rate Read Device Type Set Remote Mode Set Wrap Mode Reset Wrap Mode Read Data Set Stream Mode Status Request Set Resolution Set Auto-speed Reset Auto-speed Command FA, AA, 00 XX, (XX, XX) FA FA FA FA, FA FA, 00 or FA,03(Scrolling Mode) FA FA FA FA, XX, XX, XX FA FA, XX, XX,XX FA,FA FA FA MDT80C04 echo
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MDT80C04
(b). Resend (FE) a. When MDT80C04 receives an invalid command, it returns a Resend code to the system. b. If MDT80C04 receives a Resend command, it's last packet of data will send again to the system. (c). Set Default (F6) Initializes mouse conditions to the power-on default states. (d). Disable(F5) To disable mouse transmissions to system. (e). Enable (F4) To enable mouse transmissions to system if in stream mode. (f). Set Sampling Rate (F3, XX) Sets the sampling rate as described below Second byte XX C8 64 50 3C 28 14 0A Sample Rate 200/sec 100/sec 80/sec 60/sec 40/sec 20/sec 10/sec
(g). Read Device Type (F2) MDT80C04 send `' FA, 00'' for standard mouse. (h ). Set Remote Mode (F0) Set reports only in response to system Read Data(EB) command. (i) . Set Wrap Mode (EE) The mouse resend the data sent by system IF Reset (FF) or Reset Wrap Mode (EC) is received wrap mode will be terminated. (j). Reset Wrap Mode (EC) Set mouse to the previous mode (k). Read Data (EB) Send mouse data in any mode. (l). Set Stream Mode (EA) Set mouse in stream mode . The report rate is set by F3 command.
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MDT80C04
(m). Status Request (E9) The mouse return the status to system with 3-byte status report Byte1: Bit 0 1 2 3 4 5 6 7 1=Right button pressed 1=Middle button pressed 1=Left button pressed Reserved 0=Normal speed, 1=Autospeed 0=Disabled, 1=Enabled 0=Stream mode, 1=Remote mode Reserved Description
Byte2: Current resolution setting (D0-D7) Byte3: Current sampling rate (D0-D7)
(n) Set Resolution (E8, XX) Resolution is set as followsG Second Byte XX 00 01 02 03 (o) Set Auto speed (E7) Not supported. The MDT80C04 just responses FA (p). Reset Autospeed (E6) Not supported. The MDT80C04 just responses FA (). Microsoft PS/2 scrolling mouse modeG (a) When MDT80C04 received the following consecutive command. i. F3 C8 ----set report rate 200/sec ii. F3 64 ----set report rate 100/sec iii. F3 50 ----set report rate 80/sec Then it will enter the INTELI Scrolling mode (b) The mouse will return FA 03 to read device type command (F2). (c) Data report will be four bytes format. (d) The mouse will exit the Microsoft PS/2 scrolling mode only if power off or a reset command(FF) is received. This specification is subject to be changed without notice. Please visit our web site for the most updated information. http://www.mdtic.com.tw 5 of 12 10/29/2002 Ver. 1.1 Resolution 8 dots/count 4 dots/count 2 dots/count 1 dots/count
MDT80C04
().Z-axis Input FunctionG
(a). Photo couples input (b). Mechanical switches
8. Electrical Characteristics (TA=0J to 70J)
Absolute Maximum Ratings Parameter Min. Temperature under bias Storage temperature range Supply voltage -40 -65 -0.6 Ratings Max. 85 150 6.5 J J Volt Unit
DC Electrical Characteristics Parameters X1,X2,Y1,Y2 pull low resistor L,M,R,Z1,Z2 (key mode) input voltage Z1,Z2 (voltage mode) Sensitivity L,M,R,Z1,Z2 input leakage current (Vin=0V) L,M,R,Z1,Z2 input leakage current (Vin=5V) Sym. Rlo Vai Vs Iil Iih -0.4 Min. 10K 1.27 +0.4 -1.0 1.0 Typ. Max. 55K Unit ohm V V uA uA
PS/2 mouse mode
Parameters Operating voltage Operating current (no load) CLK, DATA Threshold voltage DATA, CLK Input low current (Pull Hi) DATA, CLK Low output voltage DATA, CLK Low output voltage (IL2=8mA) (IL1=4mA)
Sym. VDD IOP Vt Vt VL1
Min. 4.5 0.8 0.9 0.9
Typ. 5.0 0.9 1.25 1.2 0.1
Max. 5.5 1.0 1.6 1.5
Unit V mA V mA V
VL2
0.2
V
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MDT80C04
AC Electrical Characteristics
Parameters Oscillating Frequency Rising Edge Crossed Width Falling Edge Crossed Width Mouse CLK high period Time Mouse CLK low period Time System CLK high period Time System CLK low period Time Time that Mouse Sample DATA from CLK rising Edge Time from DATA Transition to Falling Edge of CLK Time from rising Edge of CLK to DATA Transition Time to mouse Inhibit after the 11th CLK to ensure mouse does not start another Transmission
Sym. Fosc Tr Tf Tmh Tml Tsh Tsl Tmdc
Min. 6.5
Typ. 7 15 10 45 45 45 45 20
Max. 7.5
Unit MHz is is is is is is is
Tsdc
22
is
Tscd
26
is
Tpi
0
72
is
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MDT80C04
9. OPT Equivalent Circuit
D I/O Control
Q I/O Control Latch QB CK
Pull_Hi100K
D Write G Data O/P Latch QB
Port I/O Pin
Data Bus Read
QB G Data I/P Latch
D TTL Input Level Input Resistor
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MDT80C04
10. Application circuit 10.1 MDT80C04A1:
HEADER 6 + C1 4.7u
CN1
Short for 2D mouse Open for 3D mouse
R3 180K
C2 0.1u
14 13
1 2 3 4 5 6
JP1
VDD OPT
CLK DATA
NC OSCRH
VSS Q6 9 10 11 R M L
12 U1 MDT80C04A1 S1
5 8
Y1 Y2 3 4
15 16
1 2
Z1 Z2
X1 X2
6 7
S2 R2 R
Q2
Q4
D1 LED
D2 LED
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R1 820
D3 LED
Q1
Q3
Q5
S3
MDT80C04
10.2 MDT80C04A2:
HEADER 6 C1 4.7u
CN1
1 2 3 4 5 6
Short for 2D mouse Open for 3D mouse
7 16
1 2
5 6
JP1
NC OSCRL
VDD OPT
CLK DATA
VSS
8
12 13
14 15
9 10 11
3 4
U1 MDT80C04A2
Y1 Y2
Z1 Z2
X1 X2
R M L
S1
S2 R2 R
R3 150K Q2 Q4 D1 LED D2 LED
C2 0.1u D3 LED Q5 Q6 S3
Q1
Q3
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R1 820
+
MDT80C04
11. Pad Diagram 11.1 MDT80C04A1:
MAI PATTERN SIZE : 1180.000 N800.000 N PADNo 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 PADName X1 X2 Y1 Y2 OSCRL VDD OSCRH OPT R M L VSS Data CLK Z1 Z2 X 110.00 110.00 110.00 110.00 264.40 938.50 1070.00 1070.00 1070.00 1070.00 1052.00 640.00 507.50 382.50 272.50 110.00 Y 498.50 373.50 248.50 123.50 76.50 76.50 76.50 201.50 326.50 466.50 591.50 660.50 690.00 690.00 690.00 638.50 No use Remark
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MDT80C04
11.2 MDT80C04A2:
MAIN PATTERN SIZE : 1180.000 N800.000 PADNo 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 PADName VDD OSCRH OPT Z1 Z2 CLK VSS Data R M L X1 X2 Y1 Y2 OSCRL X 938.50 1070.00 1070.00 1070.00 1070.00 1052.00 640.00 507.50 382.50 272.50 110.00 110.00 110.00 110.00 110.00 264.40 Y 76.50 76.50 201.50 326.50 466.50 591.50 660.50 690.00 690.00 690.00 638.50 498.50 373.50 248.50 123.50 76.50 No use
This specification is subject to be changed without notice. Please visit our web site for the most updated information. http://www.mdtic.com.tw 12 of 12 10/29/2002 Ver. 1.1

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