M16C1N Datasheet, PDF (213/238 Pages) Renesas Technology Corp – RENESAS 16-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY / M16C/10 SERIES

M16C/1N Group
19. Flash Memory Version
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)
Table 19.8 Pin functions (Flash memory CAN I/O mode)
Pin
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
Name
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
I/O
Description
I Apply the voltage guaranteed for program and erase to Vcc pin and 0 V to
Vss pin.
I Connect a capacitor (0.1µF) to VSS pin.
I Connect to VCC pin
I Reset input pin. While RESET pin is "L" level, input a 20 cycle or longer clock
to XIN pin.
I Connect a ceramic resonator or crystal oscillator between XIN and XOUT pins.
O To input an externally generated clock, input it to XIN pin and open XOUT pin.
I Enter the reference voltage for AD from this pin. Connect to VCC or VSS pin.
I Input "H" or "L" level signal or open.
O CAN output pin. Connect this pin to CAN transceiver.
I CAN input pin. Connect this pin to CAN transceiver.
I Input "H" or "L" level signal or open.
I SCLK signal input pin. Input "L" level signal.
I Input "H" or "L" level signal or open.
I SEL signal input pin. Input "H" level signal.
I CE signal input pin. Input "H" level signal.
I Input "H" or "L" level signal or open.
I Input "H" or "L" level signal or open.
I Input "H" or "L" level signal or open.
Rev.1.00 Oct 20, 2004 page 201 of 222
REJ09B0007-0100Z