AT32UC3B1256-Z1UR Atmel, AT32UC3B1256-Z1UR Datasheet - Page 555

• Manufacturer Part Number: AT32UC3B1256-Z1UR
• Description: MCU AVR32 256K FLASH 48-QFN
• Manufacturer: Atmel
• Series: AVR®32 UC3r

Specifications of AT32UC3B1256-Z1UR

• Package / Case: 48-QFN Exposed Pad
• Voltage - Supply (vcc/vdd): 1.65 V ~ 1.95 V
• Operating Temperature: -40°C ~ 85°C
• Speed: 60MHz
• Number Of I /o: 28
• Core Processor: AVR
• Program Memory Type: FLASH
• Ram Size: 32K x 8
• Program Memory Size: 256KB (256K x 8)
• Data Converters: A/D 6x10b
• Oscillator Type: Internal
• Peripherals: Brown-out Detect/Reset, DMA, POR, PWM, WDT
• Connectivity: I²C, IrDA, SPI, SSC, UART/USART, USB
• Core Size: 32-Bit
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

Figure 25-3. GOVRE and OVREn Flag Behavior
32059J–12/2010
OVRE0(SR)
GOVRE(SR)
DRDY(ASR)
CH0(CHSR)
CH1(CHSR)
TRIGGER
EOC0(SR)
EOC1(SR)
LCDR
CRD0
CRD1
Undefined Data
Undefined Data
If the CDR register is not read before further incoming data is converted, the corresponding
Overrun Error bit in the SR register (SR.OVREn) is set.
In the same way, new data converted when DRDY is high sets the General Overrun Error bit in
the SR register (SR.GOVRE).
The OVREn and GOVRE bits are automatically cleared when the SR register is read.
Warning: If the corresponding channel is disabled during a conversion or if it is disabled and
then reenabled during a conversion, its associated data and its corresponding EOC and OVRE
flags in SR are unpredictable.
Conversion
Undefined Data
Conversion
Data A
Data A
Data B
Conversion
Data B
Data C
AT32UC3B
Data C
Read CDR1
Read CDR0
Read SR
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