參數(shù)資料
型號(hào)： W28J320TT90L
廠商： WINBOND ELECTRONICS CORP
元件分類： PROM
英文描述： 2M X 16 FLASH 2.7V PROM, 90 ns, PDSO48
封裝： 12 X 20 MM, TSOP-48
文件頁(yè)數(shù)： 40/48頁(yè)
文件大?。?/td> 1513K
代理商： W28J320TT90L
W28J320B/T
Publication Release Date: April 11, 2003
- 45 -
Revision A4
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
VIL
VIH
VIL
#OE
Valid Address
VDD
V
Vss
(min)
tVR
tR
t2VPH
tPHQV
*1
#RESET(p)
*2
Vpp (V)
Vss
VPPH1/2
ADDRESS
VIH
VIL
(A)
t
tR or F
t
tRor F
tAVQV
#CE (E)
tR
tF
tELQV
tGLQV
#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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