M16C6KA_15 Datasheet, PDF (12/270 Pages) Renesas Technology Corp – SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER Description

M16C/6KA Group
Pin Description
Pin Description
Pin name
P60 to P67
P70 to P77
Signal name
I/O port P6
I/O port P7
I/O type
Function
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
can be used for I²C-BUS interface, UART1 input/output pin,
timerA3, A4 output pin. When P60 to P63 used as I²C-BUS
interface SDA, SCL, the input level of these pins are CMOS/
SMBUS selectable.
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
and timer B5 input pin, PS2 interface input/output pin, I²C
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,
P85
I/O port P8
I/O port P85
P90 to P97 I/O port P9
P100 to P107 I/O port P10
Input/output
Input/output
Input/output
Input
Input/output
Input/output
P80 to P84, P86, and P87 are I/O ports with the same func-
tions as P0. (Except that P86 to P87's output type is CMOS
3 state only; P80 to P84's output type is N channel open
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
to B2, I²C-BUS interface I/O pins. The input level of P81 to
P84 and SDA, SCL inputs can be switched to CMOS/SMBUS
when these pins function as I²C bus interface. P85 is an
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input-only port that also functions for NMI. The NMI interrupt
is generated when the input at this pin changes from “H” to
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“L”. The NMI function cannot be cancelled using software.
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.
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