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Part Name
Description
M41ST87YMX6TR View Datasheet(PDF) - STMicroelectronics
Part Name
Description
Manufacturer
M41ST87YMX6TR
5.0, 3.3, or 3.0V, 1280 bit (160 x8) Secure Serial RTC and NVRAM Supervisor with Tamper Detection
STMicroelectronics
M41ST87YMX6TR Datasheet PDF : 42 Pages
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M41ST87Y, M41ST87W
Figure 4. Block Diagram
SDA
SCL
Crystal
V
OUT
TPX
IN
WDI
V
CC
I
2
C
INTERFACE
32KHz
OSCILLATOR
REAL TIME CLOCK
CALENDAR
128 BYTES
USER RAM
8 BYTES ROM
RTC w/ALARM
& CALIBRATION
OFIE
AFE
WATCHDOG
WDS
CLR
X
SQUARE WAVE
TAMPER
TIE
X
CLRX
EXT
V
BAT
BL
V
BL
COMPARE
IRQ/OUT
(1)
SQW/FT
(2)
TP
CLR
V
OUT
F
32k(1)
V
SO
COMPARE
RSTIN1
RSTIN2
V
PFD
COMPARE
POR
RST
(1)
EX
PFI
1
1.25V
(Internal)
PFI
2
1.25V
(Internal)
COMPARE
COMPARE
E
CON
PFO
1(2)
PFO
2(2)
AI07026
Note: 1. Open drain output.
2. Programmable output (Open drain or Full-CMOS); if open drain option is selected and if pulled-up to supply other than V
CC
, this
supply must be equal to, or less than 3.0V when V
CC
= 0V (during battery back-up mode).
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