M16C6KA_15 Datasheet, PDF (11/270 Pages) Renesas Technology Corp – SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER Description

M16C/6KA Group
Pin Description
Pin Description
Pin name Signal name
I/O type
Function
Vcc, Vss
____________
RESET
Power supply
input
Reset input Input
Apply 3.0 to 3.6 V to VCC . Apply 0V to VSS
A “L” on this input resets the microcomputer.
XIN
XOUT
M0,M1
Clock input Input
Clock output Output
Chip mode
setting
Input
These pins are provided for the main clock generating circuit.
Connect a ceramic resonator between the XIN and the XOUT
pins. To use an externally derived clock, input it to the XIN pin
and leave the XOUT pin open.
Connect to VSS
AVCC
Analog power
supply input
This pin is a power supply input for the A-D converter.
Connect this pin to VCC.
AVSS
Analog power
supply input
This pin is a power supply input for the A-D converter.
Connect this pin to VSS.
VREF
Reference Input
voltage input
This pin is a reference voltage input for the A-D converter.
P00 to P07
I/O port P0
Input/output
This is an 8-bit CMOS I/O port. It has an input/output port
direction register that allows the user to set each pin for in-
put or output individually. When set for input, the user can
specify in units of four bits via software whether or not they
are tied to a pull-up resistor.
This port supports CMOS input level. And output type sup-
ports CMOS 3 state or N channel open drain selectable.
P10 to P17
I/O port P1
Input/output This is an 8-bit I/O port equivalent to P0. Pins in this port also
function as external interrupt pins or UART1 I/O pin selected
by software.
P20 to P27
I/O port P2
Input/output This is an 8-bit I/O port equivalent to P0. (Except that output
type just supports CMOS 3 state only). P20-P27 are avail-
able for directly driving LED's.
P30 to P37
I/O port P3
Input/output This is an 8-bit I/O port equivalent to P0. (Except that output
type just supports CMOS 3 state only). The port can be
used for LPC bus interface I/O pins by software selection.
P40 to P47
I/O port P4
Input/output
This is an 8-bit I/O port equivalent to P0. (Except that output
type just supports CMOS 3 state only). By software selecting,
the port can also be used for LPC bus interface I/O pins,
Timer A0 to A2 output pins PWM output pins or serial interrupt
output I/O pins. P40 to P46 pins' level can be read regardless
the setting of input port or output port. If P40 or P43 are used
for output ports, the function that clears P40 or P43 to "0" after
the read of output data buffer from host CPU is available.
P50 to P57
I/O port P5
Input/output
This is an 8-bit I/O port equivalent to P0. (Except that output type
is CMOS 3 state only). Key on wake interrupt 0 input function
support. P57 in this port outputs a divide-by-8 or divide-by-32
clock of XIN selected by software.
Rev.1.00 Jul 16, 2004 page 9 of 266
REJ03B0100-0100Z