M16C62N Datasheet, PDF (175/213 Pages) Renesas Technology Corp – SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER

Mitsubishi microcomputers
M16C / 62N Group (80-pin)
Functions To Inhibit Rewriting Flash Memory Version (Flash Memory Version) ^{SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER}
ID Code Check Function
Use this function in standard serial I/O mode. When the contents of the flash memory are not blank, the ID
code sent from the peripheral unit is compared with the ID code written in the flash memory to see if they
match. If the ID codes do not match, the commands sent from the peripheral unit are not accepted. The ID
code consists of 8-bit data, the areas of which, beginning with the first byte, are 0FFFDF16, 0FFFE316,
0FFFEB16, 0FFFEF16, 0FFFF316, 0FFFF716, and 0FFFFB16. Write a program which has had the ID code
preset at these addresses to the flash memory.
Address
0FFFDC16 to 0FFFDF16 ID1 Undefined instruction vector
0FFFE016 to 0FFFE316 ID2 Overflow vector
0FFFE416 to 0FFFE716
BRK instruction vector
0FFFE816 to 0FFFEB16 ^{ID3 Address match vector}
0FFFEC16 to 0FFFEF16 ID4 Single step vector
0FFFF016 to 0FFFF316 ID5 Watchdog timer vector
0FFFF416 to 0FFFF716 ID6 DBC vector
0FFFF816 to 0FFFFB16 ID7 NMI vector
0FFFFC16 to 0FFFFF16
Reset vector
4 bytes
Figure 1.30.2. ID code store addresses
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