M41T93_11 STMICROELECTRONICS [STMicroelectronics], M41T93_11 Datasheet - Page 10

• Manufacturer Part Number: M41T93_11
• Description: Serial SPI bus real-time clock with battery switchover
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

Description
Figure 5.
1. Open drain output
2. CPOL (clock polarity) and CPHA (clock phase) are bits that may be set in the SPI control register of the MCU.
Table 2.
1. SDO remains at High Z until eight bits of data are ready to be shifted out during a READ.
Figure 6.
Note:
10/51
Disable reset
CPOL
0
WRITE
READ
Mode
V CC
CPHA
Hardware hookup
Function table
Data and clock timing
Supports SPI mode 0 (CPOL = 0, CPHA = 0) only.
0
SDO
C
SDI
V CC
XI
XO
V BAT
V SS
IRQ/FT/OUT
M41T93
E
H
L
L
RST
SQW
SDO
SCL
SDI
(1)
(1)
MSB
MSB
E
Doc ID 12615 Rev 6
Input disabled
AI04630
AI04631
SCL
Input disabled
Data bit latch
V CC
INT
Reset Input
SCL
SDI
SDO
CS
32KHz CLKIN
(ST6, ST7, ST9, ST10, Others)
SDI
X
(2)
(CPOL = 0, CPHA = 0)
SPI Interface with
MCU
LSB
LSB
Next data bit shift
High Z
High Z
SDO
M41T93
AI11822
AI04632
(1)