SH7059 Datasheet, PDF (868/1042 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer

25. ROM (SH7059)
25.9.4 Auto-Program Mode
(1) In auto-program mode, programming is in 128-byte units. That is, 128 bytes of data are transferred in succession.
(2) Even in the programming of less than 128 bytes, 128 bytes of data must be transferred. H'FF should be written to those
addresses that are unnecessarily written to.
(3) Set the lower seven bits of the address to be transferred to low level. Inputting an invalid address will result in a
programming error, although processing will proceed to the memory-programming operation.
(4) The memory address is transferred in the 2nd cycle. Do not transfer addresses in the 3rd or later cycles.
(5) Do not issue commands while programming is in progress.
(6) When programming, execute automatic programming once for each 128-byte block of addresses. Programming the
block at an address where programming has already been performed is not possible.
(7) To confirm the end of automatic programming, check the signal on the I/O6 pin. Confirmation in status-read mode is
also possible (status polling of the I/O7 pin is used to check the end status of automatic programming).
(8) Status-polling information on the I/O6 and I/O7 pins is retained until the next command is written. As long as no
command is written, the information is made readable by enabling CE and OE.
For the AC characteristics in auto-program mode, see section 25.10.2, AC Characteristics and Timing in Programmer
Mode.
25.9.5 Auto-Erase Mode
(1) Auto-erase mode only supports erasing of the entire memory.
(2) Do not perform command writing while auto erasing is in progress.
(3) To confirm the end of automatic erasure, check the signal on the I/O6 pin. Confirmation in the status-read mode is also
possible (status polling of the I/O7 pin is used to check the end status of automatic erasure).
(4) Status polling information on the I/O6 and I/O7 pins is retained until the next command writing. As long as no
command is written, the information is made readable by enabling CE and OE.
For the AC characteristics in auto-erase mode, see section 25.10.2, AC Characteristics and Timing in Programmer Mode.
Rev.3.00 Mar. 12, 2008 Page 778 of 948
REJ09B0177-0300