FEDL66517-01
1
Semiconductor
ML66517 Family
PIN DESCRIPTIONS
In the Type column, “I” indicates an input pin, “O” indicates an output pin, and “I/O” indicates an I/O pin.
ML66517/ML66Q517 Pin Descriptions
Description
Function
Symbol
Primary function
8-bit I/O port
Secondary function
Type
I/O
Type
I/O
P0_0/AD0
External memory access
to
Pull-up resistors can be
Address output/data I/O port
P0_7/AD7
specified for each individual bit
P1_0/A8
to
P1_7/A15
8-bit I/O port
External memory access
Address output port
I/O
I/O
Pull-up resistors can be
specified for each individual bit
O
O
O
1-bit I/O port
External memory access
Address output port
P2_0/A16
P3_0/ALE
P3_1/PSEN
Pull-up resistors can be
specified for each individual bit
4-bit I/O port
External memory access
Address latch enable signal
output pin
10 mA sink capability
Pull-up resistors can be
specified for each individual bit
External program memory
access
O
O
I/O
Read strobe output pin
External data memory access
Read strobe output pin
P3_2/RD
P3_3/WR
Port
External data memory access
Write strobe output pin
O
O
I
P5_6/TM0OUT
P5_7/TM0EVT
2-bit I/O port
Timer 0 timer output pin
I/O
I/O
I/O
Pull-up resistors can be
specified for each individual bit
Timer 0 external event input pin
P6_0/EXINT0
P6_1/EXINT1
P6_2/EXINT2
P6_3/EXINT3
P6_4/TM1EVT
P6_5/TM1OUT
P6_6/TM2EVT
P6_7/TM2OUT
P7_6/PWM0OUT
8-bit I/O port
I
I
External interrupt 0 input pin
External interrupt 1 input pin
External interrupt 2 input pin
External interrupt 3 input pin
Timer 1 external event input pin
Timer 1 timer output pin
Timer 2 external event input pin
Timer 2 timer output pin
PWM0 output pin
Pull-up resistors can be
specified for each individual bit
I
I
I
O
I
O
O
2-bit I/O port
Pull-up resistors can be
specified for each individual bit
PWM1 output pin
P7_7/PWM1OUT
O
10/29
OKI [ OKI ELECTRONIC COMPONETS ]
