ATtiny861 Automotive Atmel Corporation, ATtiny861 Automotive Datasheet - Page 115

• Manufacturer Part Number: ATtiny861 Automotive
• Manufacturer: Atmel Corporation

Specifications of ATtiny861 Automotive

• Flash (kbytes): 8 Kbytes
• Pin Count: 20
• Max. Operating Frequency: 16 MHz
• Cpu: 8-bit AVR
• # Of Touch Channels: 8
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 16
• Ext Interrupts: 16
• Usb Speed: No
• Usb Interface: No
• Spi: 1
• Twi (i2c): 1
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 11
• Adc Resolution (bits): 10
• Adc Speed (ksps): 15
• Analog Comparators: 1
• Resistive Touch Screen: No
• Temp. Sensor: Yes
• Crypto Engine: No
• Sram (kbytes): 0.5
• Eeprom (bytes): 512
• Self Program Memory: YES
• Dram Memory: No
• Nand Interface: No
• Picopower: No
• Temp. Range (deg C): -40 to 150
• I/o Supply Class: 2.7 to 5.5
• Operating Voltage (vcc): 2.7 to 5.5
• Fpu: No
• Mpu / Mmu: no / no
• Timers: 2
• Output Compare Channels: 6
• Input Capture Channels: 1
• Pwm Channels: 6
• 32khz Rtc: No
• Calibrated Rc Oscillator: Yes

16.11 Register Description
16.11.1
7753F–AVR–01/11
TCCR1A – Timer/Counter1 Control Register A
• Bits 7,6 - COM1A1, COM1A0: Comparator A Output Mode, Bits 1 and 0
These bits control the behavior of the Waveform Output (OCW1A) and the connection of the
Output Compare pin (OC1A). If one or both of the COM1A1:0 bits are set, the OC1A output
overrides the normal port functionality of the I/O pin it is connected to. The complementary
OC1B output is connected only in PWM modes when the COM1A1:0 bits are set to “01”. Note
that the Data Direction Register (DDR) bit corresponding to the OC1A and OC1A pins must be
set in order to enable the output driver.
The function of the COM1A1:0 bits depends on the PWM1A, WGM10 and WGM11 bit settings.
Table 16-6
(non-PWM).
Table 16-6.
Table 16-7
are set to fast PWM mode.
Table 16-7.
Bit
0x30 (0x50)
Read/Write
Initial value
COM1A1..0
COM1A1..0
00
01
10
11
00
01
10
11
shows the COM1A1:0 bit functionality when the PWM1A, WGM10 and WGM11 bits
shows the COM1A1:0 bit functionality when the PWM1A bit is set to Normal Mode
COM1A1
Compare Output Mode, Normal Mode (non-PWM)
Compare Output Mode, Fast PWM Mode
OCW1A Behavior
Normal port operation.
Toggle on Compare Match.
Clear on Compare Match.
Set on Compare Match.
OCW1A Behavior
Normal port operation.
Cleared on Compare Match.
Set when TCNT1 = 0x000.
Cleared on Compare Match.
Set when TCNT1 = 0x000.
Set on Compare Match.
Cleared when TCNT1 = 0x000.
R/W
7
0
COM1A0
R/W
6
0
COM1B1
R/W
ATtiny261/ATtiny461/ATtiny861
5
0
COM1B0
R/W
4
0
FOC1A
W
3
0
FOC1B
W
0
2
Disconnected
Disconnected
Connected
Connected
Connected
Connected
Connected
Connected
OC1A Pin
OC1A
PWM1A
R/W
1
0
PWM1B
R/W
0
0
Disconnected
Disconnected
Disconnected
Disconnected
Disconnected
Disconnected
Disconnected
Connected
OC1A Pin
OC1A
TCCR1A
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