M16C/6KA Group
Pin Description
Pin Description
Pin name
Signal name
I/O port P6
I/O type
Function
P60 to P67
Input/output This is an 8-bit I/O port equivalent to P0. (Except that P60 to
P63's output type is N channel open drain only; P64 to P67's
output type is CMOS 3 state only; P60 to P63 no internal
pull-up register support.) By software selecting, this port
2
can be used for I C-BUS interface, UART1 input/output pin,
timerA3, A4 output pin. When P60 to P63 used as I C-BUS
2
interface SDA, SCL, the input level of these pins are CMOS/
SMBUS selectable.
P70 to P77
I/O port P7
Input/output This is an 8-bit I/O port equivalent to P0. (Except that P70 to
P77 output type is N channel open drain only; no internal
pull-up register support.) By software selecting, this port
can be used for external interrupt input pin, timerA0 to A3
2
and timer B5 input pin, PS2 interface input/output pin, I C
interface input/output pin. P70 to P75 pins' level can be read
regardless of the setting of input port or output port.
P80 to P84,
P86,
P87,
I/O port P8
I/O port P85
Input/output P80 to P84, P86, and P87 are I/O ports with the same func-
Input/output tions as P0. (Except that P86 to P87's output type is CMOS
Input/output 3 state only; P80 to P84's output type is N channel open
P85
Input
drain only; P85 is input port only; the P80 to P84 and P85 are
no internal pull-up register support.)
By software selecting, this port can be used for timer A4, B0
2
to B2, I C-BUS interface I/O pins. The input level of P81 to
P84 and SDA, SCL inputs can be switched to CMOS/SMBUS
2
when these pins function as I C bus interface. P85 is an
______
______
input-only port that also functions for NMI. The NMI interrupt
is generated when the input at this pin changes from “H” to
______
“L”. The NMI function cannot be cancelled using software.
P90 to P97
I/O port P9
Input/output This is an 8-bit I/O port equivalent to P0. (Except that output
type is CMOS 3 state only.) By software selecting, the port
can be used for external interrupt, timer B3 to B4, A-D con-
verter extended input pins, A-D trigger, SI/O3, SI/O4 I/O
pins, PWM, output pins.
P100 to P107 I/O port P10
Input/output This is an 8-bit I/O port equivalent to P0. (Except that output
type is CMOS 3 state only.) If the ports are set to input
mode, the pull-up resistor can be set in bit unit. By software
selecting, the port can be used for A-D converter, external
interrupt input pins.
Rev.1.00 Jul 16, 2004 page 10 of 266
REJ03B0100-0100Z
RENESAS [ RENESAS TECHNOLOGY CORP ]
