HD6432621 Hitachi, HD6432621 Datasheet - Page 710
HD6432621
Manufacturer Part Number
HD6432621
Description
(HD64F262x Series) 16-Bit Microcomputer
Manufacturer
Hitachi
Datasheet
1.HD6432621.pdf
(1069 pages)
- Current page: 710 of 1069
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19.11.9 Notes on Memory Programming
1. When programming addresses which have previously been programmed, carry out auto-
2. When performing programming using programmer mode on a chip that has been
Notes: 1. The flash memory is initially in the erased state when the device is shipped by Hitachi.
666
erasing before auto-programming.
programmed/erased in an on-board programming mode, auto-erasing is recommended before
carrying out auto-programming.
FWE
RES
Note: When using other than the automatic write mode and automatic erase mode, drive the FWE
V
CC
Figure 19-25 Oscillation Stabilization Time, Boot Program Transfer Time, and
2. Auto-programming should be performed once only on the same address block.
input pin low.
For other chips for which the erasure history is unknown, it is recommended that auto-
erasing be executed to check and supplement the initialization (erase) level.
Additional programming cannot be performed on previously programmed address
blocks.
t
osc1
t
bmv
Memory read
mode
Command
wait state
Power-Down Sequence
Auto-program mode
Auto-erase mode
Command wait state
Normal/abnormal
end decision
t
dwn
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