AT89C51IC2-SLRIL Atmel, AT89C51IC2-SLRIL Datasheet - Page 84
AT89C51IC2-SLRIL
Manufacturer Part Number
AT89C51IC2-SLRIL
Description
IC MCU FLASH 8051 32K 3V 44-PLCC
Manufacturer
Atmel
Series
89Cr
Datasheet
1.AT89C51IC2-SLRIM.pdf
(147 pages)
Specifications of AT89C51IC2-SLRIL
Core Processor
8051
Core Size
8-Bit
Speed
40MHz
Connectivity
I²C, SPI, UART/USART
Peripherals
POR, PWM, WDT
Number Of I /o
34
Program Memory Size
32KB (32K x 8)
Program Memory Type
FLASH
Ram Size
1.25K x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 3.6 V
Oscillator Type
External
Operating Temperature
-40°C ~ 85°C
Package / Case
44-PLCC
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
Data Converters
-
Other names
AT89C51IC2SLRILTR
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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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