AT32UC3A364-ALUT Atmel, AT32UC3A364-ALUT Datasheet - Page 450

• 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

22.8.6.2
22.8.6.3
22.8.7
32072C–AVR32–2010/03
Identifying Bus Events
Timeouts
SMBALERT
it to the PEC value it has computed itself. If the values match, the data was received correctly. If
the PEC values differ, data was corrupted, and the master must take appropriate action.
The PEC byte is automatically inserted in a slave transmitter transmission if PEC enabled when
NBYTES reaches zero. The PEC byte is identified in a slave receiver transmission if PEC
enabled when NBYTES reaches zero. NBYTES must therefore be set to the total number of
data bytes in the transmission, including the PEC byte.
The Timing Register (TR) configures the SMBus timeout values. If a timeout occurs, the slave
will leave the bus. The SR.SMBTOUT bit is also set.
A slave can get the master’s attention by pulling the SMBALERT line low. This is done by setting
the CR.SMBAL bit. This will also enable address match on the Alert Response Address (ARA).
This chapter lists the different bus events, and how these affects bits in the TWIS registers. This
is intended to help writing drivers for the TWIS.
Table 22-5.
Event
Slave transmitter has sent a
data byte
Slave receiver has received
a data byte
Start+Sadr on bus, but
address is to another slave
Start+Sadr on bus, current
slave is addressed, but
address match enable bit in
CR is not set
Start+Sadr on bus, current
slave is addressed,
corresponding address
match enable bit in CR set
Start+Sadr on bus, current
slave is addressed,
corresponding address
match enable bit in CR set,
SR.STREN and SR.SOAM
are set.
Repeated Start received
after being addressed
Bus Events
Effect
SR.THR is cleared.
SR.BTF is set.
The value of the ACK bit sent immediately after the data byte is given
by CR.ACK.
SR.RHR is set.
SR.BTF is set.
SR.NAK updated according to value of ACK bit received from master.
None.
None.
Correct address match bit in SR is set.
SR.TRA updated according to transfer direction.
Slave enters appropriate transfer direction mode and data transfer
can commence.
Correct address match bit in SR is set.
SR.TRA updated according to transfer direction.
Slave stretches TWCK immediately after transmitting the address
ACK bit. TWCK remains stretched until all address match bits in SR
have been cleared.
Slave the enters appropriate transfer direction mode and data transfer
can commence.
SR.REP set.
SR.TCOMP unchanged.
AT32UC3A3/A4
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