
DS1375
I2C Digital Input RTC with Alarm
12
____________________________________________________________________
...
A
XXXXXXXX
A
1101000
S
0
XXXXXXXX
A
XXXXXXXX
A
XXXXXXXX
A
P
<R/W>
<WORD ADDRESS (n)>
<DATA (n)>
<DATA (n + 1)>
<DATA (n + X)
S - START
A - ACKNOWLEDGE (ACK)
P - STOP
R/W - READ/WRITE OR DIRECTION BIT ADDRESS
DATA TRANSFERRED
(X + 1 BYTES + ACKNOWLEDGE)
MASTER TO SLAVE
SLAVE TO MASTER
<SLAVE
ADDRESS>
Figure 4. Data Write—Slave Receiver Mode
...
A
XXXXXXXX
A
1101000
S
1
XXXXXXXX
A
XXXXXXXX
A
XXXXXXXX
A
P
S - START
A - ACKNOWLEDGE (ACK)
P - STOP
A - NOT ACKNOWLEDGE (NACK)
R/W - READ/WRITE OR DIRECTION BIT ADDRESS
DATA TRANSFERRED
(X + 1 BYTES + ACKNOWLEDGE)
NOTE: LAST DATA BYTE IS FOLLOWED BY A NACK.
MASTER TO SLAVE
SLAVE TO MASTER
<R/W>
<DATA (n)>
<DATA (n + 1)>
<DATA (n + 2)>
<DATA (n + X)>
<SLAVE
ADDRESS>
Figure 5. Data Read—Slave Transmitter Mode
S - START
Sr - REPEATED START
A - ACKNOWLEDGE (ACK)
P - STOP
A - NOT ACKNOWLEDGE (NACK)
R/W - READ/WRITE OR DIRECTION BIT ADDRESS
<R/W>
<WORD ADDRESS (n)>
<SLAVE ADDRESS (n)>
<SLAVE
ADDRESS>
<R/W>
A
XXXXXXXX
A
1101000
SSr
0
A
1
DATA TRANSFERRED
(X + 1 BYTES + ACKNOWLEDGE)
NOTE: LAST DATA BYTE IS FOLLOWED BY A NACK.
MASTER TO SLAVE
SLAVE TO MASTER
A
XXXXXXXX
A
XXXXXXXX
A
XXXXXXXX
A
P
<DATA (n)>
<DATA (n + 1)>
<DATA (n + 2)>
<DATA (n + X)>
...
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