Rainbow Electronics MAX6901 - Manual (Page 17)

MAX6901
3-Wire Serial RTC in a TDFN
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OSCILLATOR
32.768kHz
DIVIDER
31 × 8
RAM
ADDRESS
REGISTER
INPUT SHIFT
REGISTERS
CONTROL
LOGIC
1Hz
X1
X2
V CC
GND
SCLK
I/O
32kHz
ALARM
CONTROL
LOGIC
ALARM OUT
CS
SECONDS
MINUTES
HOURS
DATE
MONTH
DAY
YEAR
CONTROL
CENTURY
ALARM
CONFIGURATION
TEST
CONFIGURATION
ALARM
THRESHOLDS
CLOCK
BURST
RAM
BURST
Functional Diagram
GND
32KHZ X1
1
2
8
7
I/O
CS V CC
X2
SCLK
TDFN
TOP VIEW
6
5
MAX6901
3
4
Pin Configuration