DS1307 Просмотр технического описания (PDF) - Maxim Integrated
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DS1307 Datasheet PDF : 15 Pages
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DS1307 64 x 8, Serial, I2C Real-Time Clock
Figure 6. Data Read (Write Pointer, Then Read)—Slave Receive and Transmit
<Slave Address>
<Word Address (n)>
<Slave Address>
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 A P
S - Start
Sr - Repeated Start
A - Acknowledge (ACK)
P - Stop
A - Not Acknowledge (NACK)
Master to slave
Slave to master
DATA TRANSFERRED
(X+1 BYTES + ACKNOWLEDGE); NOTE: LAST DATA BYTE IS
FOLLOWED BY A NOT ACKNOWLEDGE (A) SIGNAL)
TYPICAL OPERATING CIRCUIT
V CC
V CC
V CC
R PU
R PU
CRYSTAL
CPU
RPU = tr/Cb
X1 X2
V CC
SCL
SQW/OUT
DS1307
SDA
GND
V BAT
PIN CONFIGURATIONS
TOP VIEW
X1 1 8 VCC
X2 2 7 SQW/OUT
VBAT 3 6 SCL
GND 4 5 SDA
PDIP (300 mils)
X1 1 8 VCC
X2 2 7 SQW/OUT
VBAT 3 6 SCL
GND 4 5 SDA
SO (150 mils)
13 of 15
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