M41ST87WMX6TR STMicroelectronics, M41ST87WMX6TR Datasheet - Page 35

IC SUPERVISOR RTC 160X8 28-SOIC

M41ST87WMX6TR

Manufacturer Part Number
M41ST87WMX6TR
Description
IC SUPERVISOR RTC 160X8 28-SOIC
Manufacturer
STMicroelectronics
Type
Clock/Calendar/Supervisorr
Datasheets

Specifications of M41ST87WMX6TR

Memory Size
160B
Time Format
HH:MM:SS:hh (24 hr)
Date Format
YY-MM-DD-dd
Interface
I²C, 2-Wire Serial
Voltage - Supply
2.7 V ~ 3.6 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
28-SOIC, 28-SOH (8.48mm Width)
Bus Type
Serial (2-Wire, I2C)
Operating Supply Voltage (typ)
3.3V
Operating Supply Voltage (max)
3.6V
Operating Supply Voltage (min)
2.7V
Operating Temperature Classification
Industrial
Operating Temperature (max)
85C
Operating Temperature (min)
-40C
Pin Count
28
Mounting
Surface Mount
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
497-6457-2
M41ST87WMX6TR

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
M41ST87WMX6TR
Manufacturer:
MBI
Quantity:
12 000
Part Number:
M41ST87WMX6TR
Manufacturer:
STM
Quantity:
117
Part Number:
M41ST87WMX6TR
Manufacturer:
ST
Quantity:
1 000
M41ST87Y, M41ST87W
3.6
Note:
3.7
Note:
3.8
Table 9.
Full-time 32 kHz square wave output
The M41ST87Y/W offers the user a special 32kHz square wave function which defaults to
output on the F
'0'). This function is available within one second (typ) of initial power-up and can only be
disabled by setting the 32 kE bit to '0' or the ST bit to '1.' If not used, the F
disconnected and allowed to float.
The F
Power-on reset
The M41ST87Y/W continuously monitors V
point, the RST pulls low (open drain) and remains low on power-up for t
V
be chosen to control rise time.
A power-on reset will result in resetting the following control bits to '0': OFIE, AFE, ABE,
SQWE, FT, WDS, BMB0-BMB4, RB0, RB1, TIE1, and TIE2 (see
Reset inputs (RSTIN1 & RSTIN2)
The M41ST87Y/W provides two independent inputs which can generate an output reset.
The function of these resets is identical to a reset generated by a power cycle.
Figure 25
PFD
(max). The RST pin is an open drain output and an appropriate pull-up resistor should
RS3
32k
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
pin is an open drain which requires an external pull-up resistor.
illustrate the AC reset characteristics of this function. Pulses shorter than t
Square wave output frequency
32k
pin (pin 21) as long as V
RS2
Square wave bits
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
RS1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
CC
CC
. When V
V
SO
RS0
, and the oscillator is running (ST bit =
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
CC
falls to the power fail detect trip
Frequency
Table 13 on page
32.768
8.192
4.096
2.048
1.024
None
512
256
128
64
32
16
8
4
2
1
Square wave
rec
32k
after V
Clock operation
pin should be
Table 10
CC
Units
kHz
kHz
kHz
kHz
kHz
Hz
Hz
Hz
Hz
Hz
Hz
Hz
Hz
Hz
Hz
39).
passes
R1
35/48
and
and

Related parts for M41ST87WMX6TR