ATmega32 Atmel Corporation, ATmega32 Datasheet - Page 112

• Manufacturer Part Number: ATmega32
• Manufacturer: Atmel Corporation

Specifications of ATmega32

• Flash (kbytes): 32 Kbytes
• Pin Count: 44
• Max. Operating Frequency: 16 MHz
• Cpu: 8-bit AVR
• # Of Touch Channels: 16
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 32
• Ext Interrupts: 3
• Usb Speed: No
• Usb Interface: No
• Spi: 1
• Twi (i2c): 1
• Uart: 1
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 8
• Adc Resolution (bits): 10
• Adc Speed (ksps): 15
• Analog Comparators: 1
• Resistive Touch Screen: No
• Temp. Sensor: No
• Crypto Engine: No
• Sram (kbytes): 2
• Eeprom (bytes): 1024
• Self Program Memory: YES
• Dram Memory: No
• Nand Interface: No
• Picopower: No
• Temp. Range (deg C): -40 to 85
• I/o Supply Class: 2.7 to 5.5
• Operating Voltage (vcc): 2.7 to 5.5
• Fpu: No
• Mpu / Mmu: no / no
• Timers: 3
• Output Compare Channels: 4
• Input Capture Channels: 1
• Pwm Channels: 4
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: Yes

Timer/Counter
Interrupt Mask
Register – TIMSK
Timer/Counter
Interrupt Flag Register
– TIFR
2503Q–AVR–02/11
(1)
The Input Capture is updated with the counter (TCNT1) value each time an event occurs on the
ICP1 pin (or optionally on the analog comparator output for Timer/Counter1). The Input Capture
can be used for defining the counter TOP value.
The Input Capture Register is 16-bit in size. To ensure that both the high and low bytes are read
simultaneously when the CPU accesses these registers, the access is performed using an 8-bit
temporary High Byte Register (TEMP). This temporary register is shared by all the other 16-bit
registers.
Note:
• Bit 5 – TICIE1: Timer/Counter1, Input Capture Interrupt Enable
When this bit is written to one, and the I-flag in the Status Register is set (interrupts globally
enabled), the Timer/Counter1 Input Capture Interrupt is enabled. The corresponding Interrupt
Vector
• Bit 4 – OCIE1A: Timer/Counter1, Output Compare A Match Interrupt Enable
When this bit is written to one, and the I-flag in the Status Register is set (interrupts globally
enabled), the Timer/Counter1 Output Compare A match interrupt is enabled. The corresponding
Interrupt Vector
TIFR, is set.
• Bit 3 – OCIE1B: Timer/Counter1, Output Compare B Match Interrupt Enable
When this bit is written to one, and the I-flag in the Status Register is set (interrupts globally
enabled), the Timer/Counter1 Output Compare B match interrupt is enabled. The corresponding
Interrupt Vector
TIFR, is set.
• Bit 2 – TOIE1: Timer/Counter1, Overflow Interrupt Enable
When this bit is written to one, and the I-flag in the Status Register is set (interrupts globally
enabled), the Timer/Counter1 Overflow Interrupt is enabled. The corresponding Interrupt Vector
(See “Interrupts” on page
Note:
Bit
Read/Write
Initial Value
Bit
Read/Write
Initial Value
(See “Interrupts” on page
1. This register contains interrupt control bits for several Timer/Counters, but only Timer1 bits are
This register contains flag bits for several Timer/Counters, but only Timer1 bits are described in
this section. The remaining bits are described in their respective timer sections.
See “Accessing 16-bit Registers” on page 89.
described in this section. The remaining bits are described in their respective timer sections.
OCIE2
OCF2
R/W
R/W
7
0
7
0
(See “Interrupts” on page
(See “Interrupts” on page
TOIE2
TOV2
R/W
R/W
6
0
6
0
44.) is executed when the TOV1 Flag, located in TIFR, is set.
TICIE1
ICF1
R/W
R/W
5
0
5
0
44.) is executed when the ICF1 Flag, located in TIFR, is set.
OCIE1A
OCF1A
R/W
R/W
4
0
4
0
44.) is executed when the OCF1A Flag, located in
44.) is executed when the OCF1B Flag, located in
OCIE1B
OCF1B
R/W
R/W
3
0
3
0
TOV1
TOIE1
R/W
R/W
2
0
2
0
OCIE0
OCF0
R/W
R/W
1
0
1
0
ATmega32(L)
TOV0
TOIE0
R/W
R/W
0
0
0
0
TIMSK
TIFR
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