M30262F3GP datasheet(13/239 Pages) RENESAS

13 / 239 page

Renesas Technology Corp.

Pin Description

M16C/26 Group

SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER

Under

development

Preliminary Specifications Rev. 0.9

Specifications in this manual are tentative and subject to change.

Pin Description

Table 1.3. Pin Descriptions

AVCC

Output

Clock input

XOUT

XIN

Power supply

IVCC

Input

Reset input

RESET

CNVSS

Supply 2.7V to 5.5V to the VCC pin. Supply 0V to the VSS pin.

Power supply

input

VCC, VSS

Function

I/O type

Signal name

Pin name

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.

The user must leave this pin unconnected.

Clock output

Input

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.

AVSS

Analog power

supply input

This pin is a power supply input for the A-D converter. Connect

this pin to VSS.

VREF

Reference

voltage input

Input

This pin is a reference voltage input for the A-D converter.

P15 to P17

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).

P60 to P67

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.

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.

P70 to P77

I/O port P7

Input/output

P80 to P83,

P85 to P87

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).

P90 to P93

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.

P100 to P107

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.

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