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M41ST87Y 데이터시트(PDF) 44 Page - STMicroelectronics

부품명 M41ST87Y
상세설명  5.0 V and 3.3/3.0 V secure serial RTC and NVRAM supervisor with tamper detection and 128 bytes of clearable NVRAM
PDF  48 Pages
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제조업체  STMICROELECTRONICS [STMicroelectronics]
홈페이지  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

M41ST87Y 데이터시트(HTML) 44 Page - STMicroelectronics

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DC and AC parameters
M41ST87Y, M41ST87W
44/48
Table 18.
Power down/up AC characteristics
Symbol
Parameter(1)
1.
Valid for ambient operating temperature: TA = –40 to 85°C; VCC = 4.5 to 5.5 V or 2.7 to 3.6 V (except where noted).
Min
Typ
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
tPD
EX at VIH before power down
0
µs
tPFD
PFI to PFO propagation delay
15
25
µs
tR
VPFD(min) to VPFD(max) VCC rise time
10
µs
tRB
VSS to VPFD(min) VCC rise time
1
µs
trec
Power-up deselect time
96
98(4)
4.
Programmable (see Table 12 on page 39)
ms



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