M48T129V-85PM1 STMicroelectronics, M48T129V-85PM1 Datasheet - Page 23

• Manufacturer Part Number: M48T129V-85PM1
• Description: IC TIMEKPR NVRAM 1MBIT 3V 32-DIP
• Manufacturer: STMicroelectronics
• Series: Timekeeper®r
• Type: Clock/Calendar/NVSRAMr

Specifications of M48T129V-85PM1

• Memory Size: 1M (128K x 8)
• Time Format: HH:MM:SS (24 hr)
• Date Format: YY-MM-DD-dd
• Interface: Parallel
• Voltage - Supply: 3 V ~ 3.6 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Through Hole
• Package / Case: 32-DIP (600 mil) Module
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-2835-5

M48T129V, M48T129Y
Figure 14. Power down/up mode AC waveforms
Table 11.
1. Valid for ambient operating temperature: T
2. V
3. V
Table 12.
1. All voltages referenced to V
2. Valid for ambient operating temperature: T
3. At 25 °C; V
Symbol
Symbol
t
V
V
DR
V
t
PFD
t
PFD
CC
PFD
t
FB
SO
REC
t
F
t
RB
(3)
R
(2)
(3)
passes V
V CC
V PFD (max)
V PFD (min)
V SO
INPUTS
OUTPUTS
RST
(min) to V
(max) to V
Power-fail deselect voltage
Battery backup switchover voltage
Expected data retention time
CC
Power down/up AC characteristics
Power down/up trip points DC characteristics
V
V
V
V
V
PFD
PFD
PFD
PFD
SS
PFD
= 0 V.
SS
PFD
to V
(min).
fall time of less than t
(max) to V
(min) to V
(min) to V
(max) to RST high
(min) fall time of less than t
PFD
VALID
(min) V
RECOGNIZED
SS
.
SS
PFD
tF
PFD
Parameter
V
(max) V
CC
CC
(min) V
rise time
fall time
Parameter
FB
A
A
may cause corruption of RAM data.
CC
CC
= 0 to 70 °C; V
= 0 to 70 °C; V
(1)(2)
tFB
rise time
fall time
F
may result in deselection/write protection not occurring until 200 µs after
Doc ID 5710 Rev 4
(1)
M48T129Y
M48T129V
M48T129Y
M48T129V
CC
CC
= 4.5 to 5.5 V or 3.0 to 3.6 V (except where noted).
= 4.5 to 5.5 V or 3.0 to 3.6 V (except where noted).
M48T129Y
M48T129V
DON'T CARE
HIGH-Z
Min
4.2
2.7
10
tRB
Min
300
150
V
10
40
0
1
PFD
4.35
Typ
2.9
3.0
–100mV
DC and AC parameters
tR
tREC
Max
200
RECOGNIZED
VALID
Max
4.5
3.0
AI01805
Unit
YEARS
ms
µs
µs
µs
µs
µs
Unit
23/28
V
V
V