M37517F8HP Datasheet, PDF (76/98 Pages) Renesas Technology Corp – SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER

7517 Group
qErase All Blocks Command
This command erases the contents of all blocks. Execute the
erase all blocks command as explained here following.
(1) Transfer the “A716” command code with the 1st byte.
(2) Transfer the verify command code “D016” with the 2nd byte.
With the verify command code, the erase operation will start
and continue for all blocks in the flash memory.
When erase all blocks end, the SRDY1 (BUSY) signal changes
from “H” to “L” level. The result of the erase operation can be
known by reading the status register.
SCLK
RxD
TxD
SRDY1(BUSY)
Fig. 77 Timing for erase all blocks
A716 D016
Rev.1.01 Aug 02, 2004 page 76 of 96