H8SXSLASH1663 datasheet(996/1158 Pages) RENESAS

996 / 1158 page

Section 21 Flash Memory (0.18-

µm F-ZTAT Version)

Rev.1.00 Jun. 07, 2006 Page 944 of 1102

REJ09B0294-0100

The sequence of new bit-rate selection is shown in figure 21.23.

Host

Boot program

Setting a new bit rate

H'06 (ACK)

Waiting for one-bit period

at the specified bit rate

H'06 (ACK) with the new bit rate

Setting a new bit rate

Figure 21.23 New Bit-Rate Selection Sequence

(5) Transition to Programming/Erasing State

The boot program will transfer the erasing program and erase the user MATs. On completion of

this erasure, ACK will be returned and the program will enter the programming/erasing state.

The host should select the device code, clock mode, and new bit rate with device selection, clock-

mode selection, and new bit-rate selection commands, and then send the command for the

transition to programming/erasing state. These procedures should be carried out before sending of

the programming selection command or program data.

Command

H'40

• Command, H'40, (one byte): Transition to programming/erasing state

Response

H'06

• Response, H'06, (one byte): Response to transition to programming/erasing state

The boot program will send ACK when the user MATs have been erased by the transferred

erasing program.

Error Response

H'C0

H'51

• Error code, H'51, (one byte): Erasing error

An error occurred and erasure was not completed.

H8SX/1663 Datasheet(PDF) 996 Page - Renesas Technology Corp