AT32UC3A364-ALUT Atmel, AT32UC3A364-ALUT Datasheet - Page 444

• Manufacturer Part Number: AT32UC3A364-ALUT
• Description: IC MCU 64KB FLASH 144LQFP
• Manufacturer: Atmel
• Series: AVR®32 UC3r

Specifications of AT32UC3A364-ALUT

• Core Processor: AVR
• Core Size: 32-Bit
• Speed: 66MHz
• Connectivity: EBI/EMI, I²C, IrDA, MMC, SPI, SSC, UART/USART, USB OTG
• Peripherals: Brown-out Detect/Reset, DMA, POR, WDT
• Number Of I /o: 110
• Program Memory Size: 64KB (64K x 8)
• Program Memory Type: FLASH
• Ram Size: 128K x 8
• Voltage - Supply (vcc/vdd): 1.65 V ~ 1.95 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 144-LQFP
• Processor Series: AT32UC3x
• Core: AVR32
• Data Bus Width: 32 bit
• Data Ram Size: 96 KB
• Interface Type: IrDA/SCI/SCIF/UDI
• Maximum Clock Frequency: 66 MHz
• Number Of Timers: 3
• Operating Supply Voltage: 3 V to 3.6 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: EWAVR32, EWAVR32-BL, KSK-EVK1100-PL
• Development Tools By Supplier: ATAVRDRAGON, ATSTK500, ATSTK600, ATAVRISP2, ATAVRONEKIT, ATEXTWIFI, ATEVK1104
• Minimum Operating Temperature: - 40 C
• Controller Family/series: AT32UC3A
• No. Of I/o's: 110
• Ram Memory Size: 64KB
• Cpu Speed: 66MHz
• No. Of Timers: 2
• Rohs Compliant: Yes
• For Use With: ATEVK1104 - KIT DEV/EVAL FOR AVR32 AT32UC3AATAVRONEKIT - KIT AVR/AVR32 DEBUGGER/PROGRMMRATEVK1100 - KIT DEV/EVAL FOR AVR32 AT32UC3A
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

22.8.2.1
32072C–AVR32–2010/03
Bus Timing
A master is a device which starts and stops a transfer and generates the TWCK clock. A slave is
assigned an address and responds to requests from the master. These modes are described in
the following chapters.
Figure 22-5. Typical Application Block Diagram
The Timing Register (TR) is used to control the timing of bus signals driven by TWIS. TR
describes bus timings as a function of cycles of the prescaled CLK_TWIS. The clock prescaling
can be selected through TR.EXP.
TR has the following fields:
TLOWS: Prescaled clock cycles used to time SMBUS timeout T
TTOUT: Prescaled clock cycles used to time SMBUS timeout T
SUDAT: Non-prescaled clock cycles for data setup and hold count. Used to time T
EXP: Specifies the clock prescaler setting used for the SMBUS timeouts.
f
prescaled
Rp: Pull up value as given by the I²C Standard
Host with
Interface
TWI
=
f
-------------------------- -
2
CLK TWIS
(
TWD
TWCK
EXP
–
+ )
Serial EEPROM
1
Atmel TWI
)
Slave 1
I²C RTC
Slave 2
Controller
I²C LCD
Slave 3
TIMEOUT
LOW:SEXT
I²C Temp.
AT32UC3A3/A4
Sensor
Slave 4
.
.
Rp
SU_DAT
Rp
.
VDD
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