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M48Z129Y 데이터시트(PDF) 15 Page - STMicroelectronics

부품명 M48Z129Y
상세설명  5.0 V or 3.3 V, 1 Mbit (128 Kb x 8) ZEROPOWER® SRAM
PDF  20 Pages
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제조업체  STMICROELECTRONICS [STMicroelectronics]
홈페이지  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

M48Z129Y 데이터시트(HTML) 15 Page - STMicroelectronics

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M48Z129Y, M48Z129V
DC and AC parameters
Doc ID 5716 Rev 7
15/20
Figure 10.
Power down/up mode AC waveforms
AI03610
VCC
E
OUTPUTS
DON'T CARE
HIGH-Z
tF
tFB
tR
tRB
VALID
VALID
RECOGNIZED
RECOGNIZED
VPFD (max)
VPFD (min)
VSO
tREC
RST
(PER CONTROL INPUT)
(PER CONTROL INPUT)
tWPT
tDR
Table 9.
Power down/up AC characteristics
Symbol
Parameter(1)
Min
Max
Unit
tF
(2)
VPFD (max) to VPFD (min) VCC fall time
300
µs
tFB
(3)
VPFD (min) to VSS VCC fall time
M48Z129Y
10
µs
M48Z129V
150
tR
VPFD (min) to VPFD (max) VCC rise time
10
µs
tRB
VSS to VPFD (min) VCC rise time
1
µs
tWPT
Write protect time
M48Z129Y
40
150
µs
M48Z129V
40
250
tREC
VPFD (max) to RST high
40
200
ms
1.
Valid for ambient operating temperature: TA = 0 to 70 °C; VCC = 4.5 to 5.5 V or 3.0 to 3.6 V (except where noted).
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).
3.
VPFD (min) to VSS fall time of less than tFB may cause corruption of RAM data.
Table 10.
Power down/up trip points DC characteristics
Symbol
Parameter(1)(2)
Min
Typ
Max
Unit
VPFD
Power-fail deselect voltage
M48Z129Y
4.2
4.35
4.5
V
M48Z129V
2.7
2.9
3.0
V
VSO
Battery backup switchover voltage
M48Z129Y
3.0
V
M48Z129V
2.45
V
tDR
(3)
Expected data retention time
10
Years
1.
All voltages referenced to VSS.
2.
Valid for ambient operating temperature: TA = 0 to 70 °C; VCC = 4.5 to 5.5 V or 3.0 to 3.6 V (except where noted).
3.
At 25 °C, VCC = 0 V.



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