H8SXSLASH1663 datasheet(958/1158 Pages) RENESAS

958 / 1158 page

Section 21 Flash Memory (0.18-

µm F-ZTAT Version)

Rev.1.00 Jun. 07, 2006 Page 906 of 1102

REJ09B0294-0100

1. After SCI boot mode is initiated, the bit rate of the SCI_4 is adjusted with that of the host.

2. Inquiry information about the size, configuration, start address, and support status of the user

MAT is transmitted to the host.

3. After inquiries have finished, all user MAT are automatically erased.

4. When the program preparation notice is received, the state of waiting for program data is

entered. The start address of the programming destination and program data must be

transmitted after the programming command is transmitted. When programming is finished,

the start address of the programming destination must be set to H'FFFFFFFF and transmitted.

Then the state of waiting for program data is returned to the state of waiting for

programming/erasing command. When the erasure preparation notice is received, the state of

waiting for erase block data is entered. The erase block number must be transmitted after the

erasing command is transmitted. When the erasure is finished, the erase block number must be

set to H'FF and transmitted. Then the state of waiting for erase block data is returned to the

state of waiting for programming/erasing command. Erasure must be executed when the

specified block is programmed without a reset start after programming is executed in SCI boot

mode. When programming can be executed by only one operation, all blocks are erased before

entering the state of waiting for programming/erasing command or another command. Thus, in

this case, the erasing operation is not required. The commands other than the

programming/erasing command perform sum check, blank check (erasure check), and memory

read of the user MAT and acquisition of current status information.

Memory read of the user MAT can only read the data programmed after all user MAT has

automatically been erased. No other data can be read.

H8SX/1663 Datasheet(PDF) 958 Page - Renesas Technology Corp