HD6432621 Hitachi, HD6432621 Datasheet - Page 700

• Manufacturer Part Number: HD6432621
• Description: (HD64F262x Series) 16-Bit Microcomputer
• Manufacturer: Hitachi

19.11.2 Programmer Mode Operation
Table 19-11 shows how the different operating modes are set when using programmer mode, and
table 19-12 lists the commands used in programmer mode. Details of each mode are given below.
Table 19-11 Settings for Various Operating Modes in Programmer Mode
Mode
Read
Output disable
Command write
Chip disable*
Notes: *1 Chip disable is not a standby state; internally, it is an operation state.
656
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.
*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.
1
FWE
H or L
H or L
H or L*
H or L
3
CE
L
L
L
H
OE
L
H
H
X
Pin Names
WE
H
H
L
X
I/O7– I/O0
Data output
Hi-Z
Data input
Hi-Z
A18–A0
Ain
X
Ain*
X
2