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17.20.9 Programmer Mode Transition Time
Commands cannot be accepted during the oscillation stabilization period or the programmer mode
setup period. After the programmer mode setup time, a transition is made to memory read mode.
Table 17-45 Command Wait State Transition Time Specifications
Item
Standby release (oscillation
stabilization time)
Programmer mode setup time
V
hold time
CC
V
CC
RES
Figure 17-59 Oscillation Stabilization Time, Programmer Mode Setup Time, and Power
17.20.10 Notes on Memory Programming
• When programming addresses which have previously been programmed, carry out auto-
erasing before auto-programming.
• When performing programming using PROM mode on a chip that has been
programmed/erased in an on-board programming mode, auto-erasing is recommended before
carrying out auto-programming.
Notes: 1. The flash memory is initially in the erased state when the device is shipped by Renesas
Technology. 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.
2. Auto-programming should be performed once only on the same address block.
Additional programming cannot be carried out on address blocks that have already
been programmed.
Symbol
t
osc1
t
bmv
t
dwn
Memory read
mode
Command
t
t
wait state
osc1
bmv
Supply Fall Sequence
Min
Max
30
—
10
—
0
—
Command
wait state
Normal/
Auto-program mode
abnormal end
identification
Auto-erase mode
Command acceptance
Rev. 5.00, 12/03, page 661 of 1088
Unit
ms
ms
ms
t
dwn
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