M4T28-BR12SH1 STMicroelectronics, M4T28-BR12SH1 Datasheet - Page 3
![IC SNAPHAT BATT/CRYSTAL 28-SOIC](/photos/6/57/65729/m4t28-br12sh1_sml.jpg)
M4T28-BR12SH1
Manufacturer Part Number
M4T28-BR12SH1
Description
IC SNAPHAT BATT/CRYSTAL 28-SOIC
Manufacturer
STMicroelectronics
Datasheets
1.M4T28-BR12SH1.pdf
(29 pages)
2.M4T32-BR12SH1.pdf
(16 pages)
3.M4T28-BR12SH1.pdf
(12 pages)
4.M4T28-BR12SH1.pdf
(11 pages)
Specifications of M4T28-BR12SH1
Battery Type
Li-(CF)
Operating Supply Voltage
0 V to 2.8 V
Maximum Operating Temperature
+ 70 C
Minimum Operating Temperature
0 C
Package / Case
SOIC-28
Mounting Style
SMD/SMT
Ic Function
Timekeeper (Battery & Crystal)
Supply Voltage Range
2.8V
Operating Temperature Range
0°C To +70°C
Digital Ic Case Style
SNAPHAT
No. Of Pins
28
Termination Type
SMD
Rohs Compliant
Yes
Filter Terminals
SMD
External Depth
14.99mm
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
497-3686-5
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
M4T28-BR12SH1
Manufacturer:
ALLEGRO
Quantity:
301
Part Number:
M4T28-BR12SH1
Manufacturer:
ST
Quantity:
20 000
M48T35AV
List of tables
Table 1.
Table 2.
Table 3.
Table 4.
Table 5.
Table 6.
Table 7.
Table 8.
Table 9.
Table 10.
Table 11.
Table 12.
Table 13.
Table 14.
Table 15.
Table 16.
Table 17.
Table 18.
Signal names . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Operating modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
READ mode AC characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
WRITE mode AC characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Register map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Operating and AC measurement conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Capacitance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
DC characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Power down/up AC characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Power down/up trip points DC characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
PCDIP28 – 28-pin plastic DIP, battery CAPHAT™, pack. mech. data . . . . . . . . . . . . . . . . 22
SOH28 – 28-lead plastic small outline, 4-socket battery SNAPHAT
SH – 4-pin SNAPHAT
SH – 4-pin SNAPHAT
Ordering information scheme . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
SNAPHAT
Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
®
battery table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
®
®
housing for 48 mAh battery & crystal, pack. mech. data . . . . . . . 24
housing for 120 mAh battery & crystal, pack. mech. data . . . . . . 25
Doc ID 6845 Rev 8
®
, pack. mech. data. . 23
List of tables
3/29