DS1375 Datasheet, PDF (4/11 Pages) Dallas Semiconductor – 2-Wire Digital Input RTC with Alarm

2-Wire Digital Input RTC with Alarm
SDA
t_BUF
t_LOW
t_R
t_F
t_HD:STA
t_SP
SCL
t_HD:STA
STOP START
t_HD:DAT
t_HIGH
t_SU:DAT
t_SU:STA
REPEATED
START
Figure 1. Data Transfer on 2-Wire Serial Bus
CLK
DIVIDER
DS1375
SCL
SERIAL BUS
INTERFACE AND
ADDRESS
SDA
REGISTER
8192Hz/4096Hz/1024Hz/1Hz
1Hz
CONTROL
LOGIC
SRAM
MUX/
BUFFER
SQW/INT
ALARM AND
CONTROL
REGISTERS
CLOCK AND
CALENDAR
REGISTERS
USER BUFFER
(7 BYTES)
t_SU:STO
Figure 2. Functional Diagram
(V_CC = +3.3V, T_A = +25°C, unless otherwise noted.)
Typical Operating Characteristics
I_CCS vs. V_CC
300
250
200
150
100
50
1.7 2.2 2.7 3.2 3.7 4.2 4.7 5.2
V_CC (V)
I_CCA vs. V_CC
100
90
80
70
60
50
40
30
20
10
0
1.7 2.2 2.7 3.2 3.7 4.2 4.7 5.2
V_CC (V)
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