TSC TTP 243 Plus, Service Manual

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TTP-243 Plus/ 243E Plus/
342 Plus Bar Code Printer
3.2 MCU Pin Description
Port I/O Initial High Low Function Instruction
PA0 I Pull Up RXD0 RXD for RS232
PA1 O TXD0 TXD for RS232
PA2 I Pull Up PA2 RTS for RS232
PA3 O PA3 CTS for RS232
PA4 O TXD1 DI for TPH
PA5 O SCK1 CLK for TPH
PA6 O Pull Up Active /CS2 /CS2
PA7 O Pull Up Active /CS3 /CS3
PA8 I Active IRQ2 Power down
PA9 I Pull Up Active IRQ3 USB_INT
PA10 O Pull Up Active /CS0 /CS0
PA11 O Pull Up Active /CS1 /CS1
PA12 O /WRL /WRL
PA13 O /WRH No use
PA14 O /RD /RD
PA15 O Pull Up Enable PA15 /LAT for TPH
PB0 O A16 A16
PB1 O A17 A17
PB2 O /RAS /RAS
PB3 O /CASL /CASL
PB4 O /CASH /CASH
PB5 O RDWR RDWR
PB6 O A18 A18
PB7 O A19 A19
PB8 O A20 A20
PB9 O A21 A21
PC0~PC15 O A0~A15 A0~A15
PD0~PD15 I/O D0~D15 D0~D15
PE0 O PWM Enable TIOC0A GAP LEVEL
PE1 I Pull Up PE1 KEY3
PE2 I Pull Up Enable PE2 CASE OPEN
PE3 I Pull Up Enable PE3 /STTOBE for Centronic port
PE4 O PWM Enable TIOC1A DCM for DC motor enable
PE5 O Pull Up Enable PE5 STB1 for TPH
PE6 I Pull Up Enable PE6 DC SENS for DC sensor
PE7 O Pull Up Enable PE7 STB2 for TPH
PE8 I Pull Up PE8 KEY2
PE9 I Pull Up PE9 KEY1
PE10 O Pull Up Enable PE10 STB3 for TPH
PE11 I Pull Up Enable PE11 CT SENS for cutter sensor
PE12 I/O Pull Up PE12 SUSPEND for USB
PE13 O Pull Up Enable PE13 STB4 for TPH
PE14 I/O PE14 RTC I/O
PE15 I Pull Up Enable PE15 HEAD SENS
PF0 I PF0 Vdet for TPH Voltage detect
PF1 I PF1 TM for TPH temperture