h8s-2646 Renesas Electronics Corporation., h8s-2646 Datasheet - Page 739

• Manufacturer Part Number: h8s-2646
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2600 Series
• Manufacturer: Renesas Electronics Corporation.

20.11.2 Programmer Mode Operation
Table 20.11 shows how the different operating modes are set when using programmer mode, and
table 20.12 lists the commands used in programmer mode. Details of each mode are given below.
• Memory Read Mode
• Auto-Program Mode
• Auto-Erase Mode
• Status Read Mode
Table 20.11 Settings for Various Operating Modes in Programmer Mode
Notes: 1. Chip disable is not a standby state; internally, it is an operation state.
Mode
Read
Output disable
Command write
Chip disable *
Memory read mode supports byte reads.
Auto-program mode supports programming of 128 bytes at a time. Status polling is used to
confirm the end of auto-programming.
Auto-erase mode supports automatic erasing of the entire flash memory. Status polling is used
to confirm the end of auto-programming.
Status polling is used for auto-programming and auto-erasing, and normal termination can be
confirmed by reading the I/O6 signal. In status read mode, error information is output if an
error occurs.
2. Ain indicates that there is also address input in auto-program mode.
3. For command writes in auto-program and auto-erase modes, input a high level to the
FWE pin.
1
FWE
H or L
H or L
H or L *
H or L
3
CE
CE
L
L
L
H
CE
CE
OE
OE
L
H
H
X
OE
OE
Pin Names
Rev. 5.00 Sep 22, 2005 page 713 of 1136
WE
WE
H
H
L
X
WE
WE
I/O7 to I/O0
Data output
Hi-Z
Data input
Hi-Z
REJ09B0257-0500
Section 20 ROM
A18 to A0
Ain
X
Ain *
X
2