M16C26 Datasheet, PDF (13/239 Pages) Renesas Technology Corp – 16-BIT CMOS SINGLE-CHIP MICROCOMPUTER M16C FAMILY / M16C/20 SERIES

Udenvdeelropment
Preliminary Specifications Rev. 0.9
Specifications in this manual are tentative and subject to change.
M16C/26 Group
Pin Description
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
Pin Description
Pin name
Signal name I/O type
Function
VCC, VSS
Power supply
input
Supply 2.7V to 5.5V to the VCC pin. Supply 0V to the VSS pin.
CNVSS
RESET
CNVSS
Input
Reset input Input
This pin is used to select, at reset, operation in either single-chip
user or serial boot programming mode. If connected to VSS,
operation after reset will employ single-chip user mode. If
connected to VCC, reset will cause entry into boot mode.
A "L" on this input resets the microcomputer.
IVCC
Power supply
The user must leave this pin unconnected.
XIN
XOUT
AVCC
AVSS
VREF
P15 to P17
P60 to P67
P70 to P77
P80 to P83,
P85 to P87
P90 to P93
P100 to P107
Clock input Input
Clock output Output
These pins are provided for the main clock generating
circuit. Connect a ceramic resonator or crystal 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.
Analog power
supply input
This pin is a power supply input for the A-D converter. Connect
this pin to VCC.
Analog power
supply input
This pin is a power supply input for the A-D converter. Connect
this pin to VSS.
Reference
voltage input
Input
This pin is a reference voltage input for the A-D converter.
I/O port P1
Input/output
This is a 3-bit I/O port. When used for input pin, the port can be
set to have or not have a pull-up resistor by software. P15 to P17
also function as the input pins for external interrupts INT3 to INT5
as selected by software. Additionally, P15 can be configured to act
as the A/D trigger source (ADTRG).
I/O port P6
Input/output
This is an 8-bit I/O port. When used for input pin, the port can be
set to have or not have a pull-up resistor in units of four bits by
software. Pins in this port also function as UART0 and UART1 I/O
pins as selected by software.
I/O port P7
Input/output
This is an 8-bit I/O port. When used for input pin, the port can be
set to have or not have a pull-up resistor in units of four bits by
software (P70 to P71 are N channel open-drain outputs). Pins in
this port also function as timer A0-A3 I/O, UART2 I/O pins, or 3-
phase PWM V/W outputs as selected by software.
I/O port P8
Input/output
This is a 7-bit I/O port. When used for input pin, the port can be
set to have or not have a pull-up resistor in units of four bits by
software. Using software, they can be made to function as the I/O
pins for timer A4, the input pins for external interrupts INT0, INT1,
NMI, or 3-phase PWM U outputs and 3-phase PWM shutdown
input. P86 to P87 can be set using software to function as the
I/O pins for a sub clock generation circuit. In this case, connect a
quartz oscillator between P86 (XCOUT pin) and P87 (XCIN pin).
I/O port P9
Input/output
This is a 4-bit I/O port. When used for input pin, the port can be
set to have or not have a pull-up resistor in units of four bits by
software. Pins in this port also function as Timer B0-B2 input pins
as selected by software.
I/O port P10
Input/output
This is an 8-bit I/O port. When used for input pin, the port can be
set to have or not have a pull-up resistor in units of four bits by
software Pins in this port also function as A-D converter input pins
as selected by software. Furthermore, P104-P107 also function as
input pins for the key input interrupt function pins as selected by
software.
Table 1.3. Pin Descriptions
7
Renesas Technology Corp.