Sharp FO-1850, Руководство по обслуживанию

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XFC-MVP (IC3) Terminal descriptions
Pin Name Pin No. I/O
Input
Type Output
Type
Pin Description
Operator Panel Interface
OPO[7:0] [38:40][42:44]
[46:47]
O
−
2XL Keyboard/LED strobe [7:0].
OPI[3:0] [49:52] I HU
−
Keyboard return [3:0]. (Pullup. Hysteresis In.)
LEDCTL 55 O
−
4XC Indicates outputs OPO [7:0] are for LEDs.
LCDCS 54 O
−
1XC LCD chip select.
General Purpose I/O
GPIO[7:0]/
VID[7:0] [86:87][89:94] I/O H 2XC Programmable: GPIO (8 lines) or video data bus.
GPIO[10:8]/
VDC[2:0] [83:85] I/O H 2XC Programmable: GPIO (3 lines) or video data control signals.
GPIO11/BE/
SERINP 82 I/O H 1XC Programmable: GPIO line, Bus Enable, serial data input (Autobaud).
GPIO12/
CS2n/SCLK 80 I/O H 2XC Programmable: GPIO line, I/O chip select or SCLK (SART).
GPIO13/
CS3n/TXD 79 I/O H 2XC Programmable: GPIO line, I/O chip select or TXD (SART).
GPIO14/
CS4n/RXD 78 I/O H 2XC Programmable: GPIO line, I/O chip select or RXD (SART).
GPIO15/
CS5n 77 I/O H 2XC Programmable: GPIO line or I/O chip select.
GPIO16/
IRQ8 76 I/O H 1XC Programmable: GPIO line or active high interrupt.
GPIO17/
IRQ5n 75 I/O H 1XC Programmable: GPIO line or active low interrupt.
GPIO18/
IRQ10n 74 I/O H 1XC Programmable: GPIO line or active low interrupt.
GPIO[19]/RDY
/SEROUT 73 I/O H 1XC Programmable: GPIO line, Ready or Serial out (Autobaud).
Miscellaneous
SM[3:0]/
GPO[7:4] [103:106] O
−
1XC Programmable: scan motor control pins or GPO pins.
PM[3:0]/
GPO[3:0] [115:118] O
−
1XC Programmable: print motor control pins or GPO pins.
TONE 119 O
−
1XC Tone output signal.
Power, Reference Voltages, Ground
−
Vref 66 I
−
VR
−
Negative Reference Voltage for Video A/D.
+Vref 68 I +VR
−
Positive Reference Voltage for Video A/D.
ADGA 69 VADG A/D Analog Ground.
ADVA 70 VADV A/D Analog Power.
ADGD 72 VADG A/D Digital Ground.
ADVD 71 VADV A/D Digital Power.
VIN 67 I VA
−
Analog Video A/D input.
THADI 65 I TA
−
Analog Thermal A/D input.
VSS (12) 134, 132, 108,
95, 88, 64, 56,
53, 45, 28, 21,7 Digital Ground.
VDD (8) 140, 123, 102,
81, 48, 41, 32,
14 Digital Power.
VDRAM 114 Battery power for DRAM refresh.
VBAT 63 Battery Power, for RTC and SRAM.
No Connection
NC 107 No connection.
FO-1850TH
5 – 4