Casio CE-6000 Service Manual page 12

CPU pin description(uPD784215GC-084-8EU)
Pin No. Signal Name
1 P120 HD1
2 P121 HD2
3 P122 HD3
4 P123 HD4
5 P124 HD5
6 P125 HD6
7 P126 HD7
8 P127 HDGATE2
9 VDD VDD
10 X2 X2
11 X1 X1
12 VSS GND
13 XT2 XT2
14 XT1 XT1
15 RESET RESET
16 P00 TP
17 P01 COM2 SEL
18 P02 CUTTER RP
19 P03 PWD
20 P04 VFD BUSY
21 P05 RP
22 P06 IRQ ARCNET
23 AVDD VDD
24 AVREF0 AVREF0
25 P10 AVREF
26 P11 HDTH
27 P12 CROM IN
28 P13 DWS
29 P14 DSR1
30 P15 CI1
31 P16 CD1
32 P17 P.N.E.
33 AVSS GND
34 P130 LED SLATCH LED Latch signal
35 P131 LED CE
36 AVREF1 VDD
37 P70 RX2
38 P71 TX2
39 P72 RAM ENABLE RAM enable signal
40 P20 RX1
41 P21 TX1
42 P22 RTS1
43 P23 MOTOR
44 P24 RTS2
45 P25 LED SIN
46 P26 LED SOUT
47 P27 LED SCK
48 P80 RB0/CB0
49 P81 RB1
50 P82 RB2
Description
HEAD PIN DRIVE HD1
HEAD PIN DRIVE HD2
HEAD PIN DRIVE HD3
HEAD PIN DRIVE HD4
HEAD PIN DRIVE HD5
HEAD PIN DRIVE HD6
HEAD PIN DRIVE HD7
HEAD GATE2
Power supply VDD +5V
Clock 12.5 MHz
Clock 12.5 MHz
Power supply GND
Clock
Clock
Reset termial
Timing puls from printer TP
COM 2 selection
Auto-cutter reset pulse CUTTER RP
Power down signal
Display controller busy signal
Reset pulse from printer RP
Interrupt rquest form ARCNET controller
Power supply VDD +5V
Connected to VDD +5V
Vp voltage check terminal
Head thermistor input
Flash ROM cassette in signal
Drawer sensor input
COM1 DSR signal
COM1 CI signal
COM1 CD signal
Paper near end sensor input
Power supply GND
LED chip enable signal
Connected to VDD +5V
COM2 and COM3 receive data
COM2 and COM3 transmit data
COM1 receive data
COM1 transmit data
COM1 RTS signal
Motor drive signal
COM2 RTS signal
LED data in signal
LED data out signal
LED SCK signal out
Bank selection RB0/CB0
Bank selection RB1
Bank selection RB2
- 10 -
In/Out
Out
Out
Out
Out
Out
Out
Out
Out
In
In
In
In
In
In
Out
In
In
In
In
In
In
In
In
In
In
In
In
In
Out
Out
In
Out
Out
In
Out
Out
Out
Out
In
Out
Out
Out
Out
Out