M41T256YMT7 STMicroelectronics, M41T256YMT7 Datasheet - Page 25
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M41T256YMT7
Manufacturer Part Number
M41T256YMT7
Description
Real Time Clock Serial 256K (32Kx8)
Manufacturer
STMicroelectronics
Datasheet
1.M41T256YMT7.pdf
(30 pages)
Specifications of M41T256YMT7
Function
Clock, Calendar
Rtc Memory Size
32768 B
Supply Voltage (max)
5.5 V
Supply Voltage (min)
4.5 V
Maximum Operating Temperature
+ 70 C
Minimum Operating Temperature
- 25 C
Mounting Style
SMD/SMT
Rtc Bus Interface
Serial
Package / Case
SO-44
Time Format
HH:MM:SS:hh
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
M41T256YMT7F
Manufacturer:
STMicroelectronics
Quantity:
135
Figure 14. Power down/up mode AC waveforms
Table 10.
1. Valid for ambient operating temperature: T
2. V
3. V
4.
Symbol
V
At 25°C and V
t
t
PFD
CC
PFD
t
FB
t
t
REC
F
t
RB
DR
(2)
R
(3)
passes V
(min) to V
(max) to V
V CC
V PFD (max)
V PFD (min)
V SO
INPUTS
RST
OUTPUTS
Power down/up AC characteristics
V
V
V
V
Power up deselect time
Expected data retention time (OSC on, sleep mode off)
PFD
PFD
PFD
SS
PFD
CC
SS
PFD
to V
= 0V with the oscillator running and using M4T32-BR12SH SNAPHAT battery top.
(min).
fall time of less than t
(min) to V
(max) to V
(min) to V
(min) fall time of less than tF may result in deselection/write protection not occurring until 200µs after
PFD
(PER CONTROL INPUT)
(min) V
VALID
RECOGNIZED
SS
PFD
PFD
tF
V
(max) V
CC
CC
(min) V
Parameter
rise time
fall time
FB
A
may cause corruption of RAM data.
CC
CC
= –25 to 70°C; V
fall time
rise time
tFB
(1)
CC
tDR
= 4.5 to 5.5V (except where noted).
DON'T CARE
HIGH-Z
tRB
7.2
Min
300
10
10
40
1
(4)
Typ
tR
(PER CONTROL INPUT)
tREC
Max
200
RECOGNIZED
VALID
AI04757
years
Unit
ms
µs
µs
µs
µs
25/30