hd64338023s Renesas Electronics Corporation., hd64338023s Datasheet - Page 218

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

Section 6 ROM
6.10.2
The following commands are supported in programmer mode.
• Memory Read Mode
• Auto-Program Mode
• Auto-Erase Mode
• Status Read Mode
Status polling is used for auto-programming, auto-erasing, and status read modes. In status read
mode, detailed internal information is output after the execution of auto-programming or auto-
erasing. Table 6.13 shows the sequence of each command. In auto-programming mode, 129 cycles
are required since 128 bytes are written at the same time. In memory read mode, the number of
cycles depends on the number of address write cycles (n).
Table 6.13 Command Sequence in Programmer Mode
n: the number of address write cycles
Rev. 7.00 Mar 10, 2005 page 176 of 652
REJ09B0042-0700
Command Name
Memory read
Auto-program
Auto-erase
Status read
Programmer Mode Commands
2
Number
of Cycles
1 + n
129
2
Mode
Write
Write
Write
Write
1st Cycle
X
Address Data
X
X
X
H'00
H'40
H'20
H'71
Mode
Read
Write
Write
Write
2nd Cycle
Address Data
RA
WA
X
X
Dout
Din
H'20
H'71