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零件编号
产品描述 (功能)
M41T94(2003) 查看數據表(PDF) - STMicroelectronics
零件编号
产品描述 (功能)
生产厂家
M41T94
(Rev.:2003)
512 Bit (64 bit x8) SERIAL RTC (SPI) SRAM
STMicroelectronics
M41T94 Datasheet PDF : 31 Pages
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M41T94
Figure 6. Block Diagram
E
SDO
SDI
SCL
SPI
INTERFACE
Crystal
WDI
VCC
32KHz
OSCILLATOR
REAL TIME CLOCK
CALENDAR
44 BYTES
USER RAM
RTC w/ALARM
AF
& CALIBRATION
WATCHDOG
WDF
SQUARE WAVE
VBAT
RSTIN1
RSTIN2
BL
VBL= 2.5V
COMPARE
VSO = 2.5V
COMPARE
VPFD = 4.4V COMPARE
(2.65V if THS = VSS)
POR
Note: 1. Open drain output
Figure 7. Hardware Hookup
IRQ/FT/OUT
(1)
SQW
RST(1)
AI04785
SPI Interface with
D
(CPOL, CPHA)(1) = Q
('0','0') or ('1','1')
C
Master
(ST6, ST7, ST9,
ST10, Others)
CS3 CS2 CS1
CQD
M41T94
E
CQD
XXXXX
E
CQD
XXXXX
E
AI03686
Note: 1. CPOL (Clock Polarity) and CPHA (Clock Phase) are bits that may be set in the SPI Control Register of the MCU.
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