HD6432633 Datasheet, PDF (994/1453 Pages) Renesas Technology Corp – Series of Microcomputers (MCUs: microcomputer units)

22.11.2 Programmer Mode Operation
Table 22-14 shows how the different operating modes are set when using programmer mode, and
table 22-15 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 22-14 Settings for Various Operating Modes In Programmer Mode
Pin Names
Mode
FWE
CE
OE
WE
I/O7– I/O0 A18–A0
Read
H or L
L
L
H
Data output Ain*²
Output disable H or L
L
H
H
Hi-Z
X
Command write H or L*³ L
H
L
Data input Ain*²
Chip disable*¹
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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