MC74 ON Semiconductor, MC74 Datasheet - Page 6

• Manufacturer Part Number: MC74
• Manufacturer: ON Semiconductor

SCL
SDA
SCL
SDA
A = Start Condition
B = MSB of Address Clocked into Slave
C = LSB of Address Clocked into Slave
D = R/W Bit Clocked into Slave
E = Slave Pulls SDA Line Low
A = Start Condition
B = MSB of Address Clocked into Slave
C = LSB of Address Clocked into Slave
D = R/W Bit Clocked into Slave
SMBUS Write Timing Diagram
SMBUS Read Timing Diagram
t SU(START) t H(START)
t SU(START) t H(START)
A
A
I LOW
I LOW I HIGH
B
B
I HIGH
t SU–DATA
t SU–DATA
C
C
F = Acknowledge Bit Clocked into Master
G = MSB of Data Clocked into Slave
H = LSB of Data Clocked into Slave
I = Slave Pulls SDA Line Low
E = Slave Pulls SDA Line Low
F = Acknowledge Bit Clocked into Master
G = MSB of Data Clocked into Master
H = LSB of Data Clocked into Master
D
D
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Figure 2.
E F
MC74
E F
6
t H–DATA
G
G
J = Acknowledge Clocked into Master
K = Acknowledge Clock Pulse
L = Stop Condition, Data Executed by Slave
M= New Start Condition
H
H
I = Acknowledge Clock Pulse
J = Stop Condition
K = New Start Condition
I
I J
t SU(STOP)
K
t SU(STOP) t IDLE
J
L
t IDLE
K
M