参数资料
型号: W28J800BT90L
厂商: WINBOND ELECTRONICS CORP
元件分类: PROM
英文描述: 512K X 16 FLASH 2.7V PROM, 90 ns, PDSO48
封装: 12 X 20 MM, TSOP-48
文件页数: 41/49页
文件大小: 1527K
代理商: W28J800BT90L
W28J800B/T
- 46 -
12. ADDITIONAL INFORMATION
Recommended Operating Conditions
At Device Power-up
AC timing illustrated in Figure 21 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.
VIH
VIL
DD
VIH
V IL
VIH
VIL
#OE
Valid Address
VDD
V
Vss
(min)
tVR
tR
t2VPH
tPHQV
*1
#RESET (p)
*2
Vpp
(V)
Vss
V PPH1/2
ADDRESS
VIH
VIL
(A)
t
tR or F
t
tR or F
tAVQV
#CE
(E)
tR
tF
t ELQV
t GLQV
#WE (W)
VIH
VIL
(G)
tF
tR
#WP
(S)
VIH
VIL
DATA (D/Q)
VOH
VOL
Valid Output
HIGH Z
* 1 t5VPH for the device in 5V operations.
*2 To prevent the unwanted writes, system designers should consider the
VPP switch, which connects VPP to VSS during read
operations and
VPPH1/2 during write or erase operations.
Figure 21. AC Timing at Device Power-Up
For the AC specifications tVR, tR, tF 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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