Rev. 5.00, 12/03, page 597 of 1088
17.11.3
Programmer Mode Operation
Table 17-14 shows how the different operating modes are set when using programmer mode, and
table 17-15 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-erasing.
Status Read Mode: Status polling is used for auto-programming and auto-erasing, and normal
termination can be confirmed by reading the I/O
6
signal. In status read mode, error information is
output if an error occurs.
Table 17-14 Settings for Each Operating Mode in Programmer Mode
Pin Names
Mode
FWE
CE
CE
CE
CE
OE
OE
OE
OE
WE
WE
WE
WE
I/O
7
to I/O
0
A
18
to A
0
Read
H or L
L
L
H
Data output
Ain
Output disable
H or L
L
H
H
Hi-Z
×
Command write
H or L
*
3
L
H
L
Data input
Ain
*
2
Chip disable
*
1
H or L
H
×
×
Hi-Z
×
Legend:
H:
High level
L:
Low level
Hi-Z: High impedance
×
:
Don’t care
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 when making a transition to auto-program or auto-erase mode,
input a high level to the FWE pin.
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