H8SSLASH2214 datasheet(650/936 Pages) RENESAS

650 / 936 page

Section 15 ROM

Rev.4.00 Sep. 18, 2008 Page 590 of 872

REJ09B0189-0400

15.13.4

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 7 bits of the transfer address must be low. 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 15.25). 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/O7 status polling uses the auto-program operation end

decision 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.

H8S/2214 Scheda tecnica(PDF) 650 Page - Renesas Technology Corp