Rev.6.00 Oct.28.2004 page 605
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REJ09B0138-0600H
19.13.3
Programmer Mode Operation
Table 19-19 shows how the different operating modes are set when using programmer mode, and table 19-20 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 19-19 Settings for Each Operating Mode in Programmer Mode
Pin Names
Mode
FWE
CE
OE
WE
I/O0 to I/O7
A0 to A16
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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