TSC TTP 246M Service Manual

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TTP-246M/344M Bar Code Printer
Service Manual
3.2 MCU PIN Description
A. The Function is follow 40-0220001-02 PCB version.
Port
I/O
High
Low
Function
Instruction
PD0~PD15
I/O
Data D0~D15
Data bus
PC0~PC15
O
Address A0~A15
Address bus
PB0~PB1
O
Address A16~A17
Address bus
PB6~PB9
O
Address A18~A21
Address bus
PB2
O
Active
/RAS
DRAM control signal
PB.3
O
Active
/CASL
DRAM control signal
PB.4
O
Active
/CASH
DRAM control signal
PB5
O
Read
Write
RDWR
DRAM control signal
PA0
I
RXD0
RS232 RX
PA1
O
TXD0
RS232 DX
PA2
I
Active
IRQ0
/Select In
PA3
O
PA3
RS232 CTS
PA4
O
TXD1
TPH Data In
PA5
O
SCK1
TPH Clock
PA6
O
Active
/CS2
CS2
PA7
O
Active
/CS3
CS3
PA8
I
Active
IRQ2
Centronic port /AF
PA9
I
Active
IRQ3
USB interrupt
PA10
O
Active
/CS0
CS0
PA11
O
Active
/CS1
CS1
PA12
O
Active
/WRL
Write Low Byte
PA13
O
Active
/WRH
Write High Byte
PA14
O
Active
/RD
Read
PA15
O
Active
PA15
TPH Latch
PE0
O
Active
PE0
TPH Strobe 1
PE1
O
Active
PE1
TPH Strobe 2
PE2
O
Enable
PE2
LED 1 (L1)
PE3
O
Active
PE3
TPH Power Enable
PE4
I
Enable
PE4
Menu Key
PE5
O
Enable
PE5
LED 2 (L2)

TSC TTP 246M Specifications

General

Brand	TSC
Model	TTP 246M
Category	Barcode Reader
Language	English