Sharp SF-2220 Service Manual page 149

Pin No. Port Signal name
52 P27 A15
53 P50 A16
54 P51 LHPS
55 P52 PPD
56 P53 MCS
57 VSS VSS
58 P60 DATA0
59 P61 DATA1
60 P62 DATA2
61 S-CLK S-CLK
62 /STBY /STBY
63 /RES /RESET
64 NMI NMI
65 VSS VSS
66 EXTAL EXTAL
67 XTEL XTEL
68 VCC VCC
69 P63 /AS
70 P64 /RD
71 P65 /HWR
72 P66 /LWR
73 MD0 MD0
74 MD1 MD1
75 MD2 MD2
76 AVCC AVCC
77 VREF VREF
78 P70 AES
79 P71
80 P72 TCS
81 P73 PROCON
82 P74 DVC
83 P75
84 P76 BLDATA
85 P77 PCG
86 AVSS GND
87 P80 MHPS
88 P81 FWS
89 P82 /CS2
90 P83 /CS1
91 P84 TFD
92 VSS GND
93 PA0 LED0
94 PA1 LED1
95 PA2 CLPWM
96 PA3 MMRE
97 PA4 GBPWM
98 PA5 PFMCLK
99 PA6 TM0
100 PA7 TM1
IN/OUT H/L
IN L
IN H
IN H
IN
IN
IN
OUT H
IN H
IN L
IN
IN
OUT H
OUT L
OUT L
OUT H
IN H
IN L
IN H
IN
TH IN
IN
IN
IN
PD IN
OUT
OUT
IN H
IN
OUT L
OUT L
IN H
OUT H
OUT
OUT
IN
OUT
OUT
OUT H
OUT H
Address signal
Address signal
Lens home position signal (LOW at 100%)
Transport pass sensor signal (HIGH when paper is sensed.)
Drum marking sensor signal
Power (GND)
Matrix input 0 (LSI51)
Matrix input 1 (LSI51)
Matrix input 2 (LSI51)
System clock (Fixed to HIGH)
Standby signal (Fixed to HIGH)
Reset at LOW.
Non-maskable interruption (Fixed to LOW.)
Power (GND)
Clock (8MHz)
Clock (8MHz)
Power (+5V2)
Address strobe signal (Fixed to HIGH.)
ROM. I/O data read signal
I/O data write signal
Lower write signal (Fixed to HIGH.)
Mode set signal (Fixed to HIGH.)
Mode set signal (Fixed to LOW.)
Mode set signal (Fixed to HIGH.)
A/D, D/A convertor power
A/D, D/A convertor reference voltage
AE sensor signal (Analog input signal)
Thermistor signal (Analog input signal)
Toner density sensor signal (Analog input signal)
Process control signal (Analog input signal)
Developing unit color detection signal (Analog input signal)
Original sensor signal (Analog input signal)
Blank lamp data signal (Analog input signal)
Process control gain signal
Mirror home position sensor signal
Zero cross detection signal
Chip select signal (I/O) (I/O is selected at LOW.)
Chip select signal (EPROM) (EPROM is selected at LOW.)
Waste toner sensor signal (Toner full at HIGH)
Power (GND)
Original detection LED lighting signal 0 (ON at HIGH)
Original detection LED lighting signal 1 (ON at HIGH)
Copy lamp control signal (PWM signal)
Main motor rotary encoder detection signal
Grid bias control signal (PWM signal)
Paper feed motor clock signal
Toner supply motor drive signal 0 (ON at HIGH)
Toner supply motor drive signal 1 (ON at HIGH)
12 – 7
Specifications