AT32UC3A3128 Atmel Corporation, AT32UC3A3128 Datasheet - Page 61

• Manufacturer Part Number: AT32UC3A3128
• Manufacturer: Atmel Corporation

Specifications of AT32UC3A3128

• Flash (kbytes): 128 Kbytes
• Pin Count: 144
• Max. Operating Frequency: 66 MHz
• Cpu: 32-bit AVR
• # Of Touch Channels: 32
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 110
• Ext Interrupts: 110
• Usb Transceiver: 1
• Usb Speed: Hi-Speed
• Usb Interface: Device + OTG
• Spi: 6
• Twi (i2c): 2
• Uart: 4
• Lin: 4
• Ssc: 1
• Sd / Emmc: 1
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 8
• Adc Resolution (bits): 10
• Adc Speed (ksps): 384
• Resistive Touch Screen: No
• Dac Channels: 2
• Dac Resolution (bits): 16
• Temp. Sensor: No
• Crypto Engine: No
• Sram (kbytes): 128
• Self Program Memory: YES
• External Bus Interface: 1
• Dram Memory: sdram
• Nand Interface: Yes
• Picopower: No
• Temp. Range (deg C): -40 to 85
• I/o Supply Class: 3.0 to 3.6
• Operating Voltage (vcc): 3.0 to 3.6
• Fpu: No
• Mpu / Mmu: Yes / No
• Timers: 6
• Output Compare Channels: 18
• Input Capture Channels: 12
• Pwm Channels: 12
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: Yes

7.4.7
7.4.8
7.4.9
7.4.10
7.4.11
32000D–04/2011
Fraction of execution time spent stalling due to writeback
ITLB miss rate
DTLB miss rate
Branch prediction hit rate
Branch prediction correct rate
AWSD = PCNT0 / PCNT1
The average writeback stall duration (AWSD) mesures the average number of clock cycles
spent stalling due to a full writebuffer.
CONF0: 0x9 (Write buffer full cycles)
FETW=CONF0/PCCNT
The fraction of execution time spent stalling due to writeback (FETW) is the ratio of writebuffer
full stall cycles to the total number of cycles.
CONF0: 0x3 (ITLB miss)
CONF1: 0x7 (Instruction count)
IMR = PCNT0 / PCNT1
The ITLB miss rate (IMR) is the ratio of ITLB misses to the number of instructions executed.
CONF0: 0x4 (DTLB miss)
CONF1: 0x7 (Instruction count)
IMR = PCNT0 / PCNT1
The DTLB miss rate (DMR) is the ratio of DTLB misses to the number of instructions executed.
CONF0: 0x17 (BTB hit)
CONF1: 0x5 (Branch executed)
BPHR = PCNT0 / PCNT1
The branch prediction hit rate (BPHR) is the ratio of BTB hits to the number of branches
executed.
CONF0: 0x5 (Branch executed)
CONF1: 0x6 (Branch mispredicted)
BPCR = PCNT1 / PCNT0
The branch prediction correct rate (BPCR) is the ratio of branch mispredictions to the total num-
ber of executed branches.
AVR32
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