ATTINY43U-SUR Atmel, ATTINY43U-SUR Datasheet - Page 97

• Manufacturer Part Number: ATTINY43U-SUR
• Description: MCU AVR 4KB FLASH 8MHZ 20SOIC
• Manufacturer: Atmel
• Series: AVR® ATtinyr

Specifications of ATTINY43U-SUR

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: USI
• Peripherals: Brown-out Detect/Reset, POR, PWM, Temp Sensor, WDT
• Number Of I /o: 16
• Program Memory Size: 4KB (2K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 64 x 8
• Ram Size: 256 x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 5.5 V
• Data Converters: A/D 4x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

• Bit 1 – OCFnA: Output Compare Flag n A
The OCFnA bit is set when a Compare Match occurs between the Timer/Countern and the data
in OCRnA – Output Compare Registern A. OCFnA is cleared by hardware when executing the
corresponding interrupt handling vector. Alternatively, OCFnA is cleared by writing a logic one to
the flag. When the I-bit in SREG, OCIEnA (Timer/Countern Compare Match Interrupt Enable),
and OCFnA are set, the Timer/Countern Compare Match Interrupt is executed.
• Bit 0 – TOVn: Timer/Countern Overflow Flag
The bit TOVn is set when an overflow occurs in Timer/Countern. TOVn is cleared by hardware
when executing the corresponding interrupt handling vector. Alternatively, TOVn is cleared by
writing a logic one to the flag. When the SREG I-bit, TOIEn (Timer/Countern Overflow Interrupt
Enable), and TOVn are set, the Timer/Countern Overflow interrupt is executed.
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