Programmer Mode Commands - Renesas H8 Series Hardware Manual

Section 6 ROM
6.10.2

Programmer Mode Commands

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
Command Name
Memory read
Auto-program
Auto-erase
Status read
n: the number of address write cycles
Rev. 7.00 Mar 10, 2005 page 176 of 652
REJ09B0042-0700
Number
of Cycles
Mode
1 + n Write
129 Write
2 Write
2 Write
1st Cycle
Address Data
X H'00
X H'40
X H'20
X H'71
2nd Cycle
Mode Address Data
Read RA Dout
Write WA Din
Write X H'20
Write X H'71