SH7014 Datasheet, PDF (572/754 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer

18. 128 kB Flash Memory (F-ZTAT)
18.11.4 Auto-Program Mode
1. In auto-program mode, 128 bytes are programmed simultaneously. This should be carried out
by executing 128 consecutive byte transfers.
2. A 128-byte data transfer is necessary even when programming fewer than 128 bytes. In this
case, H'FF data must be written to the extra addresses.
3. The lower 8 bits of the transfer address must be H'00, H'80. If a value other than an effective
address is input, processing will switch to a memory write operation but a write error will be
flagged.
4. Memory address transfer is performed in the second cycle (figure 18.24). Do not perform
transfer after the third cycle.
5. Do not perform a command write during a programming operation.
6. Perform one auto-program operation for a 128-byte block for each address. Two or more
additional programming operations cannot be performed on a previously programmed address
block.
7. Confirm normal end of auto-programming by checking I/O6. Alternatively, status read mode
can also be used for this purpose (I/O7status polling uses the auto-program operation end
identification pin).
8. Status polling I/O6 and I/O7 pin information is retained until the next command write. As long
as the next command write has not been performed, reading is possible by enabling CE and
OE.
Rev.5.00 Sep. 27, 2007 Page 538 of 716
REJ09B0398-0500