M48T128VPM(2010) View Datasheet(PDF) - STMicroelectronics
Part Name
Description
Manufacturer
M48T128VPM Datasheet PDF : 23 Pages
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DC and AC parameters
Figure 11. Power down/up mode AC waveforms
M48T128Y, M48T128V
VCC
VPFD (max)
VPFD (min)
VSS
INPUTS
tF
RECOGNIZED
tFB
OUTPUTS
VALID
tDR
tRB
DON'T CARE
HIGH-Z
tREC
RECOGNIZED
VALID
AI03612
Table 10. Power down/up AC characteristics
Symbol
Parameter(1)
Min
Max
Unit
tF(2)
tFB(3)
tR
tRB
tREC
VPFD (max) to VPFD (min) VCC fall time
VPFD (min) to VSS VCC fall time
VPFD (min) to VPFD (max) VCC rise time
VSS to VPFD (min) VCC rise time
VPFD (max) to inputs recognized
300
µs
10
µs
0
µs
1
µs
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 11. Power down/up trip points DC characteristics
Symbol
Parameter(1)(2)
Min
Typ
Max
Unit
M48T128Y
4.1
4.35
4.5
V
VPFD Power-fail deselect voltage
M48T128V
2.7
2.9
3.0
V
M48T128Y
VSO
Battery backup switchover voltage
M48T128V
tDR(3) Expected data retention time
10
3.0
VPFD – 100 mV
V
V
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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Doc ID 5746 Rev 6
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