M4T28-BR12SH1TR STMICROELECTRONICS [STMicroelectronics], M4T28-BR12SH1TR Datasheet - Page 4

• Manufacturer Part Number: M4T28-BR12SH1TR
• Description: TIMEKEEPER SNAPHAT (BATTERY & CRYSTAL)
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

M4T28-BR12SH, M4T32-BR12SH
MAXIMUM RATING
Stressing the device above the rating listed in the
“Absolute Maximum Ratings” table may cause
permanent damage to the device. These are
stress ratings only and operation of the device at
these or any other conditions above those indicat-
ed in the Operating sections of this specification is
Table 2. Absolute Maximum Ratings
Note: 1. Only the M4T32-BR12SH is available in Industrial temperature (Grade 6).
DC AND AC PARAMETERS
This section summarizes the operating and mea-
surement conditions, as well as the DC and AC
characteristics of the device. The parameters in
the following DC and AC Characteristic tables are
derived from tests performed under the Measure-
Table 3. Operating and AC Measurement Conditions
4/12
Nominal Battery Voltage (V
Nominal Battery Capacity
Battery Chemistry
Crystal Load Capacitance (C
Nominal Crystal Frequency
Crystal Accuracy (@ 25°C)
Symbol
CAUTION: Do NOT wave solder SOIC to avoid damaging SNAPHAT sockets.
T
T
STG
A
Ambient Operating Temperature
Storage Temperature (V
Parameter
CC
L
)
)
CC
Parameter
Off, Oscillator Off)
M4T28-BR12SH
32.768
Li(CF)
12.5
± 35
2.8
48
not implied. Exposure to Absolute Maximum Rat-
ing conditions for extended periods may affect de-
vice
STMicroelectronics SURE Program and other rel-
evant quality documents.
ment Conditions listed in the relevant tables. De-
signers should check that the operating conditions
in their projects match the measurement condi-
tions when using the quoted parameters.
Grade 6
Grade 1
reliability.
(1)
M4T32-BR12SH
32.768
Li(CF)
12.5
± 35
120
2.8
Refer
–40 to 85
–40 to 85
0 to 70
Value
also
Unit
ppm
mAh
kHz
to
pF
V
Unit
°C
°C
°C
the