M16CSLASH26 datasheet(220/239 Pages) RENESAS

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Renesas Technology Corp.

Appendix Standard Serial I/O Mode 1 (Flash Memory Version)

214

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.

ID Check

This command checks the ID code. Execute the boot ID check command as explained here following.

(1) Transfer the “F516” command code with the 1st byte.

(2) Transfer addresses A0 to A7, A8 to A15 and A16 to A23 of the 1st byte of the ID code with the 2nd,

3rd and 4th bytes respectively.

(3) Transfer the number of data sets of the ID code with the 5th byte.

(4) The ID code is sent with the 6th byte onward, starting with the 1st byte of the code.

Figure 1.22.10. Timing for the ID check

ID Code

When the flash memory is not blank, the ID code sent from the peripheral units and the ID code written

in the flash memory are compared to see if they match. If the codes do not match, the command sent

from the peripheral units is not accepted. An ID code contains 8 bits of data. Area is, from the 1st byte,

addresses 0FFFDF16, 0FFFE316, 0FFFEB16, 0FFFEF16, 0FFFF316, 0FFFF716 and 0FFFFB16. Write

a program into the flash memory, which already has the ID code set for these addresses.

ID size

ID1

ID7

CLK1

RxD1

TxD1

RTS1(BUSY)

F516

DF16

FF16

0F16

(M16C reception

data)

(M16C transmit

data)

Reset vector

Watchdog timer vector

Single step vector

Address match vector

BRK instruction vector

Overflow vector

Undefined instruction vector

ID7

ID6

ID5

ID4

ID3

ID2

ID1

DBC vector

NMI vector

0FFFFC16 to 0FFFFF16

0FFFF816 to 0FFFFB16

0FFFF416 to 0FFFF716

0FFFF016 to 0FFFF316

0FFFEC16 to 0FFFEF16

0FFFE816 to 0FFFEB16

0FFFE416 to 0FFFE716

0FFFE016 to 0FFFE316

0FFFDC16 to 0FFFDF16

4 bytes

Address

Figure 1.22.11. ID code storage addresses

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