ATTINY43U-SUR Atmel, ATTINY43U-SUR Datasheet - Page 95
ATTINY43U-SUR
Manufacturer Part Number
ATTINY43U-SUR
Description
MCU AVR 4KB FLASH 8MHZ 20SOIC
Manufacturer
Atmel
Series
AVR® ATtinyr
Datasheet
1.ATTINY43U-SU.pdf
(182 pages)
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
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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
95
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