H8S-2345 Datasheet, PDF (619/927 Pages) Renesas Technology Corp – 16-Bit Single-Chip Microcomputer

Section 17 ROM
Table 17.21 Writer Mode Commands
Command Name
Number
of Cycles Mode
Memory read mode 1 + n^*1
Auto-program mode 129^*2
Write
Write
Auto-erase mode
2
Write
Status read mode 2
Write
Legend:
RA: Read address
WA: Program address (Write address)
Dout: Read data
Din: Program data
1st Cycle
Address Data
X
H'00
X
H'40
X
H'20
X
H'71
Mode
Read
Write
Write
Write
2nd Cycle
Address Data
RA
Dout
WA
Din
X
H'20
X
H'71
Notes: 1. In memory read mode, the number of cycles depends on the number of address write
cycles (n).
2. In auto-program mode. 129 cycles are required for command writing by a simultaneous
128-byte write.
Rev. 4.00 Feb 15, 2006 page 595 of 900
REJ09B0291-0400