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A-1 RECOMMENDED OPERATING CONDITIONS
A-1.1 At Device Power-Up
AC timing illustrated in Figure A-1 is recommended for the supply voltages and the control signals at device power-up.
If the timing in the figure is ignored, the device may not operate correctly.
V CC (min)
V CC
GND
t VR
t 2VPH *1
t R
t PHQV
V IH
RP# (P)
(RST#)
V CCW *2 (V)
V IL
V CCWH1/2
(V PPH1/2 )
(V PP )
ADDRESS (A)
GND
V IH
t R or t F
t AVQV
Valid
t R or t F
V IL
Address
CE#
(E)
WE# (W)
V IH
V IL
V IH
V IL
t F
t ELQV
t R
OE#
WP#
(G)
(S)
V IH
V IL
V IH
V IL
t F
t GLQV
t R
DATA (D/Q)
V OH
V OL
High Z
Valid
Output
*1 t 5VPH for the device in 5V operations.
*2 To prevent the unwanted writes, system designers should consider the V CCW (V PP ) switch, which connects V CCW (V PP )
to GND during read operations and V CCWH1/2 (V PPH1/2 ) during write or erase operations.
See the application note AP-007-SW-E for details.
Figure A-1. AC Timing at Device Power-Up
For the AC specifications t VR , t R , t F in the figure, refer to the next page. See the “ELECTRICAL SPECIFICATIONS“
described in specifications for the supply voltage range, the operating temperature and the AC specifications not shown in
the next page.
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