SH7059 Datasheet, PDF (782/1042 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer

24. ROM (SH7058S)
24.9.2 Programmer Mode Operation
Table 24.14 shows the settings for the operating modes of programmer mode, and table 24.15 lists the commands used in
programmer mode. The following sections provide detailed information on each mode.
• Memory-read mode
Supports reading from the user MAT or user boot MAT in bytes.
• Auto-program mode
Supports the simultaneous programming of the user MAT and user boot MAT in 128-byte units. Status polling is used
to confirm the end of automatic programming.
• Auto-erase mode
Supports only automatic erasure of the entire user MAT or user boot MAT. Status polling is used to confirm the end of
automatic erasure.
• Status-read mode
Status polling is used with automatic programming and automatic erasure. Normal completion can be detected by
reading the signal on the I/O6 pin. In status-read mode, error information is output when an error has occurred.
Table 24.14 Settings for Each Operating Mode of Programmer Mode
Pin Name
Mode
FWE
CE
OE
WE
I/O7 to I/O0
A20 to A0
Read
H or L
L
L
H
Data output
Ain
Output disable
H or L
L
H
H
Hi-Z
X
Command write
H or L
L
H
L
Data input
Ain*
Chip disable
H or L
H
X
X
Hi-Z
X
Notes: 1. The chip-disable mode is not a standby state; internally, it is an operational state.
2. To write commands when making a transition to auto-program or auto-erase mode, input a high-level signal on
the FWE pin.
* Ain indicates that there is also an address input in auto-program mode.
Rev.3.00 Mar. 12, 2008 Page 692 of 948
REJ09B0177-0300