Datasheet

M4T28-BR12SH, M4T32-BR12SH DC and AC parameters
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3 DC and AC parameters
This section summarizes the operating and measurement 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 measurement conditions listed in the
relevant tables. Designers should check that the operating conditions in their projects match
the measurement conditions when using the quoted parameters.
Table 3. Operating and AC measurement conditions
Parameter M4T28-BR12SH M4T32-BR12SH Unit
Nominal battery voltage (V
CC
)2.82.8V
Nominal battery capacity 48 120 mAh
Battery chemistry Li(CF) Li(CF)
Crystal load capacitance (C
L
) 12.5 12.5 pF
Nominal crystal frequency 32.768 32.768 kHz
Crystal accuracy (at 25°C) ± 35 ± 35 ppm