ATtiny167 Atmel Corporation, ATtiny167 Datasheet - Page 103

• Manufacturer Part Number: ATtiny167
• Manufacturer: Atmel Corporation

Specifications of ATtiny167

• Flash (kbytes): 16 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: 2
• Twi (i2c): 1
• Uart: 1
• Lin: 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 85
• I/o Supply Class: 1.8 to 5.5
• Operating Voltage (vcc): 1.8 to 5.5
• Fpu: No
• Mpu / Mmu: no / no
• Timers: 2
• Output Compare Channels: 3
• Input Capture Channels: 1
• Pwm Channels: 9
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: Yes

10.11.3
10.11.4
10.11.5
8265B–AVR–09/10
TCNT0 – Timer/Counter0 Register
OCR0A – Output Compare Register A
ASSR – Asynchronous Status Register
The three Clock Select bits select the clock source to be used by the Timer/Counter, see
Table
Table 10-5.
The Timer/Counter Register gives direct access, both for read and write operations, to the
Timer/Counter unit 8-bit counter. Writing to the TCNT0 Register blocks (removes) the Com-
pare Match on the following timer clock. Modifying the counter (TCNT0) while the counter is
running, introduces a risk of missing a Compare Match between TCNT0 and the OCR0x
Register.
The Output Compare Register A contains an 8-bit value that is continuously compared with
the counter value (TCNT0). A match can be used to generate an Output Compare interrupt, or
to generate a waveform output on the OC0A pin.
• Bit 7 – Res: Reserved Bit
This bit is reserved in the ATtiny87/167 and will always read as zero.
• Bit 6 – EXCLK: Enable External Clock Input
When EXCLK is written to one, and asynchronous clock is selected, the external clock input
buffer is enabled and an external clock can be input on XTAL1 pin instead of an external crys-
tal. Writing to EXCLK should be done before asynchronous operation is selected. Note that
the crystal oscillator will only run when this bit is zero.
Bit
0x27 (0x47)
Read/Write
Initial Value
Bit
0x28 (0x48)
Read/Write
Initial Value
Bit
(0xB6)
Read/Write
Initial Value
CS02
10-5.
0
0
0
0
1
1
1
1
OCR0A7
Clock Select Bit Description
TCNT07
R
7
–
0
R/W
R/W
7
0
7
0
CS01
0
0
1
1
0
0
1
1
EXCLK
OCR0A6 OCR0A5
TCNT06
R/W
6
0
R/W
R/W
0
0
6
6
CS00
TCNT05
AS0
R/W
5
0
R/W
R/W
0
1
0
1
0
1
0
1
5
0
5
0
TCN0UB
OCR0A4
TCNT04
R
4
0
R/W
R/W
Description
No clock source (Timer/Counter stopped).
clk
clk
clk
clk
clk
clk
clk
4
0
4
0
T
T
T
T
T
T
T
0
0
0
0
0
0
0
S
S
S
S
S
S
S
/256 (From prescaler)
/1024 (From prescaler)
/8 (From prescaler)
/32 (From prescaler)
/64 (From prescaler)
/128 (From prescaler)
OCR0AUB
OCR0A3
(No prescaling)
TCNT03
R/W
R/W
R
3
0
3
0
3
0
OCR0A2
TCNT02
R/W
R/W
2
0
2
0
R
2
–
0
OCR0A1
TCR0AUB
TCNT01
R/W
R/W
1
0
1
0
R
1
0
OCR0A0
TCNT00
TCR0BUB
R/W
R/W
0
0
0
0
R
0
0
OCR0A
TCNT0
ASSR
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