參數(shù)資料
型號: W28J321BB90L
廠商: WINBOND ELECTRONICS CORP
元件分類: PROM
英文描述: 2M X 16 FLASH 2.7V PROM, 90 ns, PBGA48
封裝: 8 X 11 MM, 0.75 MM PITCH, TFBGA-48
文件頁數(shù): 39/47頁
文件大?。?/td> 1385K
代理商: W28J321BB90L
W28J321B/T
- 44 -
12. ADDITIONAL INFORMATION
Recommended Operating Conditions
At Device Power-Up
AC timing illustrated in Figure 20 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
tRor 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 20. AC Timing at Device Power-up
specifications for the supply voltage range, the operating temperature and the AC specifications not shown in the next page.
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