AT91SAM7S32-AI ATMEL [ATMEL Corporation], AT91SAM7S32-AI Datasheet - Page 249

• Manufacturer Part Number: AT91SAM7S32-AI
• Description: AT91 ARM Thumb-based Microcontrollers
• Manufacturer: ATMEL [ATMEL Corporation]

Two-wire Interface (TWI)
Overview
Block Diagram
Application
Block Diagram
6071A–ATARM–28-Oct-04
The Two-wire Interface (TWI) interconnects components on a unique two-wire bus, made up
of one clock line and one data line with speeds of up to 400 Kbits per second, based on a byte-
oriented transfer format. It can be used with any Atmel two-wire bus Serial EEPROM. The TWI
is programmable as a master with sequential or single-byte access. A configurable baud rate
generator permits the output data rate to be adapted to a wide range of core clock
frequencies.
Figure 89. Block Diagram
Figure 90. Application Block Diagram
Host with
Interface
TWI
TWD
TWCK
PMC
APB Bridge
AT24LC16
Slave 1
MCK
U1
Two-wire
Interface
AT24LC16
Slave 2
AT91SAM7S32 Preliminary
U2
Interrupt
TWI
LCD Controller
Slave 3
U3
PIO
AIC
R
TWCK
TWD
R
VDD
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