AT89C5130A-M Atmel Corporation, AT89C5130A-M Datasheet - Page 102

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AT89C5130A-M

Manufacturer Part Number
AT89C5130A-M
Description
Manufacturer
Atmel Corporation
Datasheets

Specifications of AT89C5130A-M

Flash (kbytes)
16 Kbytes
Max. Operating Frequency
48 MHz
Cpu
8051-12C
Max I/o Pins
34
Usb Transceiver
1
Usb Speed
Full Speed
Usb Interface
Device
Spi
1
Twi (i2c)
1
Uart
1
Sram (kbytes)
1.25
Eeprom (bytes)
1024
Self Program Memory
API
Operating Voltage (vcc)
2.7 to 5.5
Timers
4
Isp
UART/USB
Watchdog
Yes
20. Two Wire Interface (
102
AT89C5130A/31A-M
This section describes the 2-wire interface. The 2-wire bus is a bi-directional 2-wire serial com-
munication 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 infor-
mation between the ICs connected to them. The serial data transfer is limited to 400 Kbit/s in
standard mode. Various communication configuration can be designed using this bus.
20-1
ter and slave.
Figure 20-1. 2-wire Bus Configuration
SCL
SDA
shows a typical 2-wire bus configuration. All the devices connected to the bus can be mas-
TWI
device1
)
device2
device3
...
deviceN
4337K–USB–04/08
Figure

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