DS1375 Datasheet, PDF (12/13 Pages) Dallas Semiconductor – 2-Wire Digital Input RTC with Alarm

I²C Digital Input RTC with Alarm
<SLAVE
ADDRESS> <R/W> <WORD ADDRESS (n)>
S 1101000 0 A
XXXXXXXX
A
S - START
A - ACKNOWLEDGE (ACK)
SLAVE TO MASTER
P - STOP
R/W - READ/WRITE OR DIRECTION BIT ADDRESS
Figure 4. Data Write—Slave Receiver Mode
<DATA (n)>
<DATA (n + 1)>
<DATA (n + X)
XXXXXXXX
A
XXXXXXXX
A ... XXXXXXXX
MASTER TO SLAVE
DATA TRANSFERRED
(X + 1 BYTES + ACKNOWLEDGE)
AP
<SLAVE
ADDRESS> <R/W>
<DATA (n)>
S 1101000 1 A
XXXXXXXX
A
S - START
MASTER TO SLAVE
A - ACKNOWLEDGE (ACK)
P - STOP
A - NOT ACKNOWLEDGE (NACK)
R/W - READ/WRITE OR DIRECTION BIT ADDRESS
<DATA (n + 1)>
XXXXXXXX
A
<DATA (n + 2)>
XXXXXXXX
A ...
<DATA (n + X)>
XXXXXXXX
SLAVE TO MASTER
DATA TRANSFERRED
(X + 1 BYTES + ACKNOWLEDGE)
NOTE: LAST DATA BYTE IS FOLLOWED BY A NACK.
AP
Figure 5. Data Read—Slave Transmitter Mode
<SLAVE
ADDRESS> <R/W>
<WORD ADDRESS (n)> <SLAVE ADDRESS (n)> <R/W>
S 1101000 0 A
XXXXXXXX
A Sr 1101000 1 A
<DATA (n)>
<DATA (n + 1)>
<DATA (n + 2)>
<DATA (n + X)>
XXXXXXXX
A
XXXXXXXX
A
XXXXXXXX
A ... XXXXXXXX
AP
S - START
MASTER TO SLAVE
Sr - REPEATED START
A - ACKNOWLEDGE (ACK)
P - STOP
A - NOT ACKNOWLEDGE (NACK)
R/W - READ/WRITE OR DIRECTION BIT ADDRESS
SLAVE TO MASTER
DATA TRANSFERRED
(X + 1 BYTES + ACKNOWLEDGE)
NOTE: LAST DATA BYTE IS FOLLOWED BY A NACK.
Figure 6. Data Write/Read (Write Pointer, Then Read)—Slave Receive and Transmit
Chip Information
TRANSISTOR COUNT: 11,797
PROCESS: CMOS
SUBSTRATE CONNECTED TO GROUND
Thermal Information
Theta-JA: 41°C/W
Theta-JC: 2°C/W
Package Information
For the latest package outline information and land patterns, go
to www.maxim-ic.com/packages.
PACKAGE TYPE PACKAGE CODE DOCUMENT NO.
6 TDFN-EP
T633+2
21-0137
12 ____________________________________________________________________