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M41ST87Y Datasheet(PDF) 38 Page - STMicroelectronics

No. de pieza M41ST87Y
Descripción Electrónicos  5.0, 3.3, or 3.0V, 1280 bit (160 x8) Secure Serial RTC and NVRAM Supervisor with Tamper Detection
PDF  42 Pages
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Fabricante Electrónico  STMICROELECTRONICS [STMicroelectronics]
Página de inicio  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

M41ST87Y Datasheet(HTML) 38 Page - STMicroelectronics

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Figure 28. Power Down/Up Mode AC Waveforms
Table 18. Power Down/Up AC Characteristics
Note: 1. Valid for Ambient Operating Temperature: TA = –40 to 85°C; VCC = 4.5 to 5.5V or 2.7 to 3.6V (except where noted).
2. VPFD(max) to VPFD(min) fall time of less than tF may result in deselection/write protection not occurring until
200µs after VCC passes VPFD(min).
3. VPFD(min) to VSS fall time of less than tFB may cause corruption of RAM data.
4. Programmable (see Table 12., page 33)
Symbol
Parameter(1)
Min
Typ
Max
Unit
tF
(2)
VPFD(max) to VPFD(min) VCC Fall Time
300
µs
tFB
(3)
VPFD(min) to VSS VCC Fall Time
10
µs
tPD
EX at VIH before Power Down
0µs
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
1µs
trec
Power up Deselect Time
96
98(4)
ms
AI07085
VCC
INPUTS
(PER CONTROL INPUT)
OUTPUTS
DON'T CARE
HIGH-Z
tF
tFB
tR
tPD
tRB
VALID
VALID
(PER CONTROL INPUT)
RECOGNIZED
RECOGNIZED
VPFD (max)
VPFD (min)
VSO
trec
RST
ECON
PFO
VALID
VALID



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