h8s-2169 Renesas Electronics Corporation., h8s-2169 Datasheet - Page 750

• Manufacturer Part Number: h8s-2169
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2100 Series
• Manufacturer: Renesas Electronics Corporation.

Section 22 ROM
Table 22.13 Programmer Mode Commands
Command Name
Memory read mode
Auto-program mode
Auto-erase mode
Status read mode
Notes: 1. In auto-program mode. 129 cycles are required for command writing by a simultaneous
22.10.4 Memory Read Mode
Rev. 3.00 Jan 18, 2006 page 722 of 1044
REJ09B0280-0300
After the end of an auto-program, auto-erase, or status read operation, the command wait state
is entered. To read memory contents, a transition must be made to memory read mode by
means of a command write before the read is executed.
Command writes can be performed in memory read mode, just as in the command wait state.
Once memory read mode has been entered, consecutive reads can be performed.
After power-on, memory read mode is entered.
2. In memory read mode, the number of cycles depends on the number of address write
128-byte write.
cycles (n).
Number
of Cycles
1 + n
129
2
2
Mode
Write
Write
Write
Write
1st Cycle
Address Data
X
X
X
X
H'00
H'40
H'20
H'71
Mode
Read
Write
Write
Write
2nd Cycle
Address Data
RA
WA
X
X
H'20
Dout
Din
H'71