HD6432138SW datasheet(695/1061 Pages) RENESAS

695 / 1061 page

Section 22 ROM (H8S/2138 F-ZTAT A-Mask Version, H8S/2134 F-ZTAT A-Mask Version)

Rev. 4.00 Jun 06, 2006 page 641 of 1004

REJ09B0301-0400

n = N?

Yes

Set pins to boot mode and execute reset-start

n = 1

n + 1

→ n

Host transfers data (H'00) continuously at prescribed

bit rate

The chip measures low period of H'00 data transmitted

by host

After bit rate adjustment, transmits one H'00 data byte

to host to indicate end of adjustment

Host confirms normal reception of bit rate adjustment

end indication (H'00), and transmits one H'55 data byte

After receiving H'55, trransmit one H'AA data byte

to host

Host transmits number of user program bytes (N),

upper byte followed by lower byte

The chip transmits received number of bytes to host as

verify data (echo-back)

Host transmits programming control program

sequentially in byte units

The chip transmits received programming control program

to host as verify data (echo-back)

Transfer received programming control program

to on-chip RAM

End of transmission

Check flash memory data, and if data has already

been written, erase all blocks

Confirming that all flash memory data has been erased

Check ID code at begining of user program transfer area

Transmit one H'AA byte to host

Execute programming control program transferred

to on-chip RAM

Start

The chip calculates bit rate and sets value in bit rate

Note: If a memory cell does not operate normally and cannot be erased, one H'FF byte is transmitted as an erase error, and

the erase operation and subsequent operations are halted.

ID code match

Transfer 1-byte of H'FF data

as an ID code error indicator

and halt other operations

Figure 22.8 Boot Mode Execution Procedure

HD6432138SW Datasheet(PDF) 695 Page - Renesas Technology Corp

HD6432138SW Datasheet(HTML) 695 Page - Renesas Technology Corp

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

Datasheet Download

Link URL