Datasheet

Section 19 ROM
Rev.6.00 Sep. 27, 2007 Page 842 of 1268
REJ09B0220-0600
19.20.9 PROM Mode Transition Time
Commands cannot be accepted during the oscillation stabilization period or the PROM mode setup
period. After the PROM mode setup time, a transition is made to memory read mode.
Table 19.45 Command Wait State Transition Time Specifications
Item Symbol Min Max Unit
Standby release (oscillation
stabilization time)
t
osc1
30 — ms
PROM mode setup time t
bmv
10 — ms
V
CC
hold time t
dwn
0 — ms
V
CC
RES
FWE
Memory read
mode
Command
wait state
Command
wait state
Normal/
abnormal end
identification
Auto-program mode
Auto-erase mode
t
osc1
t
bmv
t
dwn
Note: Except in auto-program mode and auto-erase mode, drive the FWE input pin low.
Figure 19.55 Oscillation Stabilization Time, PROM Mode Setup Time, and Power Supply
Fall Sequence