M16CSLASH1N datasheet(213/238 Pages) RENESAS

213 / 238 page

Rev.1.00

Oct 20, 2004

page 201 of 222

M16C/1N Group

19. Flash Memory Version

REJ09B0007-0100Z

19.8 CAN Input/Output Mode

In CAN I/O mode, the user ROM area can be rewritten while the microcomputer is mounted on-board by

using a CAN programmer suitable for the M16C/1N group. For more information about CAN program-

mers, contact the manufacturer of your CAN programmer. For details on how to use, refer to the user's

manual included with your CAN programmer.

Table 19.8 lists pin functions (flash memory CAN I/O mode). Figure 19.16 shows pin connections for CAN

I/O mode.

19.8.1 ID code check function

This function determines whether the ID codes sent from the CAN programmer and those written in

the flash memory match (refer to the description of 19.3 Functions to Inhibit Rewriting Flash

Memory Version)

Description

Name

I/O

Apply the voltage guaranteed for program and erase to Vcc pin and 0 V to

Vss pin.

Connect a capacitor (0.1

µF) to VSS pin.

Connect to VCC pin

Reset input pin. While RESET pin is "L" level, input a 20 cycle or longer clock

to XIN pin.

Connect a ceramic resonator or crystal oscillator between XIN and XOUT pins.

To input an externally generated clock, input it to XIN pin and open XOUT pin.

Enter the reference voltage for AD from this pin. Connect to VCC or VSS pin.

Input "H" or "L" level signal or open.

CAN output pin. Connect this pin to CAN transceiver.

CAN input pin. Connect this pin to CAN transceiver.

Input "H" or "L" level signal or open.

SCLK signal input pin. Input "L" level signal.

Input "H" or "L" level signal or open.

SEL signal input pin. Input "H" level signal.

CE signal input pin. Input "H" level signal.

Input "H" or "L" level signal or open.

VCC, VSS

IVCC

CNVSS

RESET

XIN

XOUT

VREF

P00, P01

P04 to P07

P02

P03

P10 to P15,

P17

P16

P20, P21

P30

P31

P32 to P37

P40 to P47

P50 to P52

Power input

IVCC input

CNVSS input

Reset input

Clock input

Clock output

Reference voltage input

Input port P0

CTX output

CRX input

Input port P1

SCLK input

Input port P2

SEL input

CE input

Input port P3

Input port P4

Input port P5

Table 19.8 Pin functions (Flash memory CAN I/O mode)

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