ATTINY43U-MU Atmel, ATTINY43U-MU Datasheet - Page 95

• Manufacturer Part Number: ATTINY43U-MU
• Description: MCU AVR 4K FLASH 8MHZ 20-QFN
• Manufacturer: Atmel
• Series: AVR® ATtinyr

Specifications of ATTINY43U-MU

• 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: 20-MLF®, QFN
• Processor Series: ATTINY4x
• Core: AVR8
• Data Bus Width: 8 bit
• Data Ram Size: 256 B
• Interface Type: SPI
• Maximum Clock Frequency: 8 MHz
• Number Of Programmable I/os: 16
• Number Of Timers: 2
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: EWAVR, EWAVR-BL
• Development Tools By Supplier: ATAVRDRAGON, ATSTK500, ATSTK600, ATAVRISP2, ATAVRONEKIT
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 10 bit, 4 Channel
• For Use With: ATSTK600-TINYX3U - STK600 SOCKET/ADAPTER TINYX3U
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

12.9.6
12.9.7
12.9.8
12.9.9
12.9.10
12.9.11
8048B–AVR–03/09
TCNT1 – Timer/Counter Register
OCR0A – Output Compare Register A
OCR1A – Output Compare Register A
OCR0B – Output Compare Register B
OCR1B – Output Compare Register B
TIMSK0 – Timer/Counter 0 Interrupt Mask Register
The Timer/Counter Register gives direct access, both for read and write operations, to the
Timer/Counter unit 8-bit counter. Writing to the TCNTn Register blocks (removes) the Compare
Match on the following timer clock. Modifying the counter (TCNTn) while the counter is running,
introduces a risk of missing a Compare Match between TCNTn and the OCRnx Registers.
The Output Compare Register A contains an 8-bit value that is continuously compared with the
counter value (TCNTn). A match can be used to generate an Output Compare interrupt, or to
generate a waveform output on the OCnA pin.
The Output Compare Register B contains an 8-bit value that is continuously compared with the
counter value (TCNTn). A match can be used to generate an Output Compare interrupt, or to
generate a waveform output on the OCnB pin.
Bit
0x2D (0x4D)
Read/Write
Initial Value
Bit
0x36 (0x56)
Read/Write
Initial Value
Bit
0x2C (0x4C)
Read/Write
Initial Value
Bit
0x3C (0x5C)
Read/Write
Initial Value
Bit
0x2B (0x4B)
Read/Write
Initial Value
Bit
0x39 (0x59)
Read/Write
Initial Value
R/W
R/W
R/W
R/W
R/W
R
7
–
0
7
0
7
0
7
0
7
0
7
0
R/W
R/W
R/W
R/W
R/W
R
6
–
0
6
0
6
0
6
0
6
0
6
0
R/W
R/W
R/W
R/W
R/W
R
5
–
0
5
0
5
0
5
0
5
0
5
0
R/W
R/W
R/W
R/W
R/W
R
4
–
0
4
0
4
0
4
0
4
0
4
0
OCR0A[7:0]
OCR1A[7:0]
OCR0B[7:0]
OCR1B[7:0]
TCNT1[7:0]
R/W
R/W
R/W
R/W
R/W
R
3
–
0
3
0
3
0
3
0
3
0
3
0
OCIE0B
R/W
R/W
R/W
R/W
R/W
R/W
2
0
2
0
2
0
2
0
2
0
2
0
OCIE0A
R/W
R/W
R/W
R/W
R/W
R/W
1
0
1
0
1
0
1
0
1
0
1
0
TOIE0
R/W
R/W
R/W
R/W
R/W
R/W
0
0
0
0
0
0
0
0
0
0
0
0
TIMSK0
OCR0A
OCR1A
OCR0B
OCR1B
TCNT1
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