AT83C5135 Atmel Corporation, AT83C5135 Datasheet - Page 84

• Manufacturer Part Number: AT83C5135
• Manufacturer: Atmel Corporation

Specifications of AT83C5135

• Max. Operating Frequency: 32 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): 512
• Operating Voltage (vcc): 2.7 to 3.6
• Timers: 4
• Mask Rom (kbytes): 16
• Watchdog: Yes

20. Two Wire Interface (
84
AT83C5134/35/36
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 100 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
7683C–USB–11/07
Figure