Sharp XE-A202 Service Manual - Page 8

P74 P73 CLK P71 DAT P67 P66 /FRES P64 FSD FRD FSCK DR1 /RDY /HOLD VCC NC NC /RD NC /WR /CS3 /RAS1 BUSY /ROS1 26 TA2OUTW 27 TA1IN/V 28 TA1OUT/V 29 TB5IN 30 TB5OUT 31 TXD1 32 RXD1 33 CLK1 34 CLKS1 35 TXD0 36 RXD0 37 CLK0 38 /RTS0 39 /RDY 40 ALE 41 /HOLD 42 /HLDA 43 CBCLK 44 /RD 45 /BHE 46 /WR 47 /CS3 48 /CS2 49 /CS1 50 /CS0 TRANSFORMER PQ1CG2032 V0 24V Drawer /POFF detect point PQ1CG2032 VLED 5.7V LM2574 + Tr. VCC 5V VDD 5V Battery ON/OFF Control (MODE SW) VH, VP (8V) PRINTER HEAD, MOTOR PAPER TAKEUP MOTOR ON/OFF Control (MODE SW, /POFF, CPU P105) 2. DESCRIPTION OF MAIN LSI'S 2-1. CPU (M30624FGAFP) 1) Pin configuration P97 VDD VDD TH GND P101 Vref P103 P104 P105 LATCH DTS D0 D1 D2 D3 D4 D5 D6 D7 P10 P11 P12 P13 PH1 SIN4 100 AVCC 99 VREF 98 AN0 97 AVSS 96 AN1 95 AN2 94 AN3 93 AN4 92 AN5 91 AN6 90 AN7 89 D0 88 D1 87 D2 86 D3 85 D4 84 D5 83 D6 82 D7 81 D8 80 D9 79 D10 78 D11 77 D12 76 P96 P95 P94 P93 P92 P91 P90 VDD GND XCIN XCOUT /RESET XOUT GND XIN VDD VDD CTCRL /FRDY P-OFF MOTOR BUZ1 P77 P76 P75 1 SOUT4 2 CLK4 3 TB4IN 4 TB3IN 5 SOUT3 6 SIN3 7 CLK3 8 BYTE 9 CNVss 10 XCIN 11 XCOUT 12 /RESET 13 XOUT 14 Vss 15 XIN 16 Vcc 17 NMI 18 INT2 19 INT1 20 INT0 21 TA4IN/U 22 TA4OUT/U 23 TB3IN 24 TBEOUT 25 TA2INW M30624FGAFP D13 75 D14 74 D15 73 A0 72 A1 71 A2 70 A3 69 A4 68 A5 67 A6 66 A7 65 VSS 64 A8 63 VCC 62 A9 61 A10 60 A11 50 A12 58 A13 57 A14 56 A15 55 A16 54 A17 53 A18 52 A19 51 PH2 PH3 PH4 A0 A1 A2 A3 A4 A5 A6 A7 GND A8 VDD A9 A10 A11 A12 A13 A14 A15 A16 A17 NC NC 2) Pin description Pin No. SYMBOL SIGNAL NAME In/ Out Function 1 SOUT4 P96 In Key IN 2 CLK4 P95 In Key IN 3 TB4IN P94 In Key IN 4 TB3IN P93 In Key IN 5 SOUT3 P92 In Key IN 6 SIN3 P91 In Key IN 7 CLK3 P90 In Key IN 8 BYTE VDD In VDD 9 CNVss CNVss In Normal : L Booting : H 10 XCIN XCIN In Calender clock :32.768KHz 11 XCOUT XCOUT In Calender clock :32.768KHz 12 /RESET /RESET In Reset 13 XOUT XOUT Out Open 14 Vss Vss In Vss 15 XIN XIN In System clock 16 Vcc VDD In VDD 17 NMI P85 In Not used 18 INT2 P84 Out PRINTER/STB2 19 INT1 /RDY In NU FMC (/RDY) 20 INT0 P-OFF In Power off 21 TA4IN/U MOTOR Out Paper take up motor drive 22 TA4OUT/U BUZ1 Out Buzzer drive 23 TB3IN P77 In RS232 :DR 24 TBEOUT P76 In RS232 :CS 25 TA2INW P75 In RS232 :CD 26 TA2OUTW P74 Out RS232 :ES 27 TA1IN/V P73 Out Drawer drive 2 28 TA1OUT/V CLK2 Out Printer data clock 29 TB5IN P71 Out NU FMC (BUSY) 30 TB5OUT TXD2 Out Print data 31 TXD1 P67 Out RS232 :SD 32 RXD1 P66 In RS232 :RD 33 CLK1 /FRES Out NU FMC (/FRES) 34 CTS1/RTS1 P64 Out RS232 :RS 35 TXD0 FSD Out FMC :Send data 36 RXD0 FRD In FMC :Receive data 37 CLK0 FSCK Out FMC :Shift clock 38 /RTS0 DR1 Out Drawer drive 1 39 CLKOUT /RDY In /RDY (CGROM) 40 ALE NC Out NOT USE 41 /HOLD /HOLD In /BOOT MODE 42 /HLDA NC Out NOT USE 43 CBCLK BCLK Out BCLK 44 /RD /RD Out Read 45 /BHE NC Out NOT USE 46 /WR /WR Out Write 47 /CS3 CS3 Out Display segment latch 48 /CS2 /CS2 Out Chip select :for RAM 49 /CS1 /CS1 Out EPM Control 50 /CS0 /CS0 Out Chip select : for ROM 51 A19 A19 Out Address bus :19 52 A18 A18 Out Address bus :18 XE-A202U HARDWARE DESCRIPTION - 7 -