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22.11.2 Programmer Mode Operation
Table 22-11 shows how the different operating modes are set when using programmer mode, and
table 22-12 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 22-11 Settings for Various Operating Modes In Programmer Mode
Mode
Read
Output disable
Command write
1
Chip disable*
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.
822
CE
FWE
H or L
L
H or L
L
3
H or L*
L
H or L
H
Pin Names
OE
WE
L
H
H
H
H
L
X
X
I/O7– I/O0
A18–A0
Data output
Ain
Hi-z
X
Data input
Ain*
Hi-z
X
2
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