hd64338023s Renesas Electronics Corporation., hd64338023s Datasheet - Page 224

• Manufacturer Part Number: hd64338023s
• Description: Renesas 8-bit Single-chip Microcomputer Super Low Power Series
• Manufacturer: Renesas Electronics Corporation.

Section 6 ROM
6.10.4
1. When reprogramming previously programmed addresses, perform auto-erasing before auto-
2. Perform auto-programming once only on the same address block. It is not possible to program
3. In auto-program mode, 128 bytes are programmed simultaneously. This should be carried out
4. The lower 7 bits of the transfer address must be low. If a value other than an effective address
5. Memory address transfer is performed in the second cycle (figure 6.17). Do not perform
6. Do not perform a command write during a programming operation.
7. Perform one auto-program operation for a 128-byte block for each address. Two or more
8. Confirm normal end of auto-programming by checking I/O6. Alternatively, status read mode
9. Status polling I/O6 and I/O7 pin information is retained until the next command write. As long
10. Table 6.17 shows the AC characteristics.
Rev. 7.00 Mar 10, 2005 page 182 of 652
REJ09B0042-0700
programming.
an address block that has already been programmed.
by executing 128 consecutive byte transfers. 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.
is input, processing will switch to a memory write operation but a write error will be flagged.
transfer after the third cycle.
additional programming operations cannot be performed on a previously programmed address
block.
can also be used for this purpose (I/O7 status polling uses the auto-program operation end
decision pin).
as the next command write has not been performed, reading is possible by enabling
O E
.
Auto-Program Mode
C E
and