M4T32-BR12SHX STMICROELECTRONICS [STMicroelectronics], M4T32-BR12SHX Datasheet - Page 23
![no-image](/images/no-image-200.jpg)
M4T32-BR12SHX
Manufacturer Part Number
M4T32-BR12SHX
Description
Serial real-time clock with 44 bytes NVRAM and reset
Manufacturer
STMICROELECTRONICS [STMicroelectronics]
Datasheet
1.M4T32-BR12SHX.pdf
(41 pages)
- Current page: 23 of 41
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4.6
4.7
Table 6.
Power-on reset
The M41T94 continuously monitors V
the RST pulls low (open drain) and remains low on power-up for t
(max). The RST pin is an open drain output and an appropriate pull-up resistor should be
chosen to control rise time.
Reset inputs (RSTIN1 & RSTIN2)
The M41T94 provides two independent inputs which can generate an output reset. The
duration and function of these resets is identical to a reset generated by a power cycle.
Table 7 on page 24
function. Pulses shorter than t
and RSTIN2 are each internally pulled up to V
RS3
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
Square wave output frequency
and
RS2
Square wave bits
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
Figure 13 on page 24
RLRH1
RS1
and t
CC
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
. When V
RLRH2
CC
illustrate the AC reset characteristics of this
will not generate a reset condition. RSTIN1
CC
through a 100k resistor.
RS0
falls to the power fail detect trip point,
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
Frequency
REC
32.768
8.192
4.096
2.048
1.024
None
512
256
128
64
32
16
8
4
2
1
after V
Square wave
CC
passes V
Units
kHz
kHz
kHz
kHz
kHz
Hz
Hz
Hz
Hz
Hz
Hz
Hz
Hz
Hz
Hz
–
23/41
PFD
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