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M4Z28-BR00SH 数据表(PDF) 11 Page - STMicroelectronics

部件名 M4Z28-BR00SH
功能描述  5V or 3V NVRAM supervisor for LPSRAM
Download  25 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

M4Z28-BR00SH 数据表(HTML) 11 Page - STMicroelectronics

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M40SZ100Y, M40SZ100W
Operation
11/25
Figure 7.
Power up timing
Table 2.
Power down/up AC characteristics
Symbol
Parameter(1)
1.
Valid for ambient operating temperature: TA = –40 to 85°C; VCC = 2.7 to 3.6V or 4.5 to 5.5V(except where noted).
Min
Max
Unit
tF
(2)
2.
VPFD (max) to VPFD (min) fall time of less than tF may result in deselection/write protection not occurring until 200 µs after
VCC passes VPFD (min).
VPFD (max) to VPFD (min) VCC fall time
300
µs
tFB
(3)
3.
VPFD (min) to VSS fall time of less than tFB may cause corruption of RAM data.
VPFD (min) to VSS VCC fall time
10
µs
tPFD
PFI to PFO propagation delay
15
25
µs
tR
VPFD(min) to VPFD (max) VCC rise time
10
µs
tEPD
Chip enable propagation delay (low or high)
M40SZ100Y
10
ns
M40SZ100W
15
ns
tRB
VSS to VPFD (min) VCC rise time
1
µs
tCER
Chip enable recovery
40
120
ms
tREC
VPFD (max) to RST high
40
200
ms
tWPT
Write protect time
40
200
µs
AI03937
VCC
E
ECON
tR
tCER
VOHB
VPFD (max)
VPFD (min)
VSO
VPFD
tEPD
tEPD
RST
tREC
tRB
VALID
PFO


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