M4T32-BR12SHX STMICROELECTRONICS [STMicroelectronics], M4T32-BR12SHX Datasheet - Page 9
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)
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Figure 4.
1. Open drain output
Figure 5.
1. CPOL (clock polarity) and CPHA (clock phase) are bits that may be set in the SPI control register of the MCU.
Crystal
RSTIN1
RSTIN2
SDO
V CC
SCL
WDI
SDI
CS3
Block diagram
Hardware hookup
E
SPI Interface with
(CPOL, CPHA) (1) =
('0','0') or ('1','1')
(ST6, ST7, ST9,
ST10, Others)
V BAT
Master
CS2
CS1
OSCILLATOR
INTERFACE
32KHz
Q
D
C
SPI
V PFD = 4.4V
V SO = 2.5V
V BL = 2.5V
(2.65V if THS = V
C
E
COMPARE
COMPARE
COMPARE
M41T94
Q
D
SS
)
REAL TIME CLOCK
& CALIBRATION
SQUARE WAVE
RTC w/ALARM
WATCHDOG
CALENDAR
USER RAM
44 BYTES
POR
C
E
XXXXX
Q
BL
D
AF
WDF
C
E
XXXXX
Q
IRQ/FT/OUT
SQW
RST (1)
D
AI03686
AI04785
(1)
9/41
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