SH7018 Datasheet, PDF (378/431 Pages) Renesas Technology Corp – SuperH™ RISC engine

16.11.2 Programmer Mode Operation
Table 16.11 shows how the different operating modes are set when using programmer mode, and
table 16.12 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 16.11 Settings for Various Operating Modes In Programmer Mode
Pin Names
Mode
FWE
CE
OE
WE
I/O0 to I/O7 A0 to A17
Read
H or L
L
L
H
Data output Ain
Output disable H or L
L
H
H
Hi-Z
Ain
Command write H or L
L
H
L
Data input *Ain
Chip disable
H or L
H
X
X
Hi-Z
Ain
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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