M48T128Y-70PM1 STMicroelectronics, M48T128Y-70PM1 Datasheet - Page 18

• Manufacturer Part Number: M48T128Y-70PM1
• Description: IC TIMEKPR NVRAM 1MBIT 5V 32-DIP
• Manufacturer: STMicroelectronics
• Series: Timekeeper®r
• Type: Clock/Calendar/NVSRAMr

Specifications of M48T128Y-70PM1

• Memory Size: 1M (128K x 8)
• Time Format: HH:MM:SS (24 hr)
• Date Format: YY-MM-DD-dd
• Interface: Parallel
• Voltage - Supply: 4.5 V ~ 5.5 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Through Hole
• Package / Case: 32-DIP (600 mil) Module
• Function: Clock, Calendar, NV Timekeeping RAM, Battery Backup
• Rtc Memory Size: 1 MB
• Supply Voltage (max): 4.5 V to 5.5 V
• Supply Voltage (min): 4.5 V
• Maximum Operating Temperature: + 70 C
• Minimum Operating Temperature: 0 C
• Mounting Style: Through Hole
• Rtc Bus Interface: Parallel
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-2834-5

DC and AC parameters
Figure 11. Power down/up mode AC waveforms
Table 10.
1. Valid for ambient operating temperature: T
2. V
3. V
Table 11.
1. All voltages referenced to V
2. Valid for ambient operating temperature: T
3. At 25 °C; V
18/23
Symbol
t
V
V
Symbol
V
DR
PFD
PFD
CC
PFD
SO
t
t
t
FB
t
REC
(3)
F
t
RB
(2)
R
V CC
V PFD (max)
V PFD (min)
V SS
INPUTS
OUTPUTS
passes V
(3)
(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
PFD
V
V
V
V
V
= 0 V.
SS
PFD
PFD
PFD
SS
PFD
PFD
(min).
fall time of less than t
to V
(min) fall time of less than t
(min) to V
(max) to V
(min) to V
(max) to inputs recognized
PFD
VALID
RECOGNIZED
SS
(min) V
Parameter
tF
.
PFD
SS
PFD
V
Parameter
(max) V
CC
CC
(min) V
FB
fall time
rise time
(1)(2)
A
A
may cause corruption of RAM data.
= 0 to 70 °C; V
= 0 to 70 °C; V
tFB
CC
CC
F
(1)
rise time
fall time
may result in deselection/write protection not occurring until 200 µs after
Doc ID 5746 Rev 6
M48T128Y
M48T128V
M48T128Y
M48T128V
CC
CC
tDR
= 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).
DON'T CARE
HIGH-Z
Min
4.1
2.7
10
tRB
Min
300
10
40
0
1
V
PFD
4.35
Typ
– 100 mV
2.9
3.0
M48T128Y, M48T128V
Max
200
RECOGNIZED
tREC
VALID
Max
4.5
3.0
Unit
ms
AI03612
YEARS
µs
µs
µs
µs
Unit
V
V
V
V