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Z51F6412
Product Specification
PS030302-0212
P R E L I M I N A R Y
18
5. Pin Description
Table 5-1 Normal Pin description
PIN
Name
I/O Function @RESET
Shared
with
P00
I/O
Port P0
8-Bit I/O Port
Can be set in input or output mode in 1-bit
units
Internal pull-up register can be used via
software when this port is used as input port
Open Drain enable register can be used via
software when this port is used as output port
Input
USS0/PCI0
P01
ACK0/PCI0
P02
TxD0/PCI0
P03
RxD0/PCI0
P04
SUBXIN/PCI0
P05
SUBXOUT/PCI0
P06
SCL/PCI0
P07
SDA/PCI0
P10
I/O
Port P1
8-Bit I/O Port
Can be set in input or output mode in 1-bit
units
Internal pull-up register can be used via
software when this port is used as input port
Open Drain enable register can be used via
software when this port is used as output port
Input
INT0
P11
INT1
P12
INT2
P13
INT3
P14
INT4
P15
INT5
P16
INT6
P17
INT7
P20
I/O
Port P2
8-Bit I/O Port
Can be set in input or output mode in 1-bit
units
Internal pull-up register can be used via
software when this port is used as input port
Open Drain enable register can be used via
software when this port is used as output port
Input
AN0/AVREF
P21
AN1
P22
AN2
P23
AN3
P24
AN4/USS3
P25
AN5/ACK3
P26
AN6/TxD3
P27
AN7/RxD3
P30
I/O
Port P3
(TTL compatible input, PAD)
8-Bit I/O Port
Can be set in input or output mode in 1-bit
units
Internal pull-up register can be used via
software when this port is used as input port
Open Drain enable register can be used via
software when this port is used as output port
Input
AN8/USS1
P31
AN9/ACK1
P32
AN10/TxD1
P33
AN11/RxD1
P34
AN12/SSS0
P35
AN13/SCK0
P36
AN0~AN7 can be selected by ADCM register
AN14/MOSI0