h8s2277 Renesas Electronics Corporation., h8s2277 Datasheet - Page 595

• Manufacturer Part Number: h8s2277
• Description: Hitachi Single-chip Microcomputer H8s/2276 Series
• Manufacturer: Renesas Electronics Corporation.

17.13.9 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.
erasing before auto-programming.
programmed/erased in an on-board programming mode, auto-erasing is recommended before
carrying out auto-programming.
FWE
RES
Note: Except in auto-erase or auto-program mode, the FWE input pin should be driven low.
V
CC
Figure 17.28 Oscillation Stabilization Time, Boot Program Transfer Time, and
2. Auto-programming should be performed once only on the same address block.
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
573