HD6432621 Hitachi, HD6432621 Datasheet - Page 683

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

FWE = 1
Notes: In order to perform a normal read of flash memory, SWE1 must be cleared to 0. Also note that verify-reads
Software programming
programming mode
disable state
Normal mode
On-board
can be performed during the programming/erasing process.
*1
*2 Do not make a state transition by setting or clearing multiple bits simultaneously.
*3 After a transition from erase mode to the erase setup state, do not enter erase mode without passing
*4 After a transition from program mode to the program setup state, do not enter program mode without
through the software programming enable state.
passing through the software programming enable state.
FWE = 0
: Normal mode
*1
Figure 19-10 FLMCR1 Bit Settings and State Transitions
SWE1 = 0
SWE1 = 1
programming
*2
Software
enable
state
: On-board programming mode
ESU1 = 1
PV1 = 0
PSU1 = 0
EV1 = 1
PSU1 = 1
EV1 = 0
PV1 = 1
ESU1 = 0
Program-verify
Erase-verify
Erase setup
setup state
Program
mode
mode
state
*3
*4
E1 = 1
P1 = 1
E1 = 0
P1 = 0
Program mode
Erase mode
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