at89c51ic2-slsim ATMEL Corporation, at89c51ic2-slsim Datasheet - Page 84
at89c51ic2-slsim
Manufacturer Part Number
at89c51ic2-slsim
Description
At89c51ic2 8-bit Flash Microcontroller With 2-wire Interface
Manufacturer
ATMEL Corporation
Datasheet
1.AT89C51IC2-SLSIM.pdf
(147 pages)
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2-wire Interface (TWI)
84
AT89C51IC2
This section describes the 2-wire interface. In the rest of the section SSLC means Two-
wire. The 2-wire bus is a bi-directional 2-wire serial communication standard. It is
designed primarily for simple but efficient integrated circuit (IC) control. The system is
comprised of two lines, SCL (Serial Clock) and SDA (Serial Data) that carry information
between the ICs connected to them. The serial data transfer is limited to 400Kbit/s in
standard mode. Various communication configuration can be designed using this bus.
Figure 35 shows a typical 2-wire bus configuration. All the devices connected to the bus
can be master and slave.
Figure 35. 2-wire Bus Configuration
SCL
SDA
device1
device2
device3
...
deviceN
4301D–8051–02/08
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