SH7052 Datasheet, PDF (801/919 Pages) Renesas Technology Corp – SuperHTM RISC engine

21.11.2 Programmer Mode Operation
Table 21.13 shows how the different operating modes are set when using programmer mode, and
table 21.14 lists the commands used in programmer mode. Details of each mode are given below.
• Memory Read Mode
Memory read mode supports byte reads.
• Auto-Program Mode
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
Auto-erase mode supports automatic erasing of the entire flash memory. Status polling is used
to confirm the end of auto-programming.
• Status Read Mode
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.
Table 21.13 Settings for Various Operating Modes In Programmer Mode
Pin Names
Mode
FWE
CE
OE
WE
I/O7 to I/O0 A18 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. Chip disable is not a standby state; internally, it is an operation state.
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.
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