ATtiny88 Automotive Atmel Corporation, ATtiny88 Automotive Datasheet - Page 110

• Manufacturer Part Number: ATtiny88 Automotive
• Manufacturer: Atmel Corporation

Specifications of ATtiny88 Automotive

• Flash (kbytes): 8 Kbytes
• Pin Count: 32
• Max. Operating Frequency: 16 MHz
• Cpu: 8-bit AVR
• # Of Touch Channels: 12
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 28
• Ext Interrupts: 28
• Usb Speed: No
• Usb Interface: No
• Spi: 1
• Twi (i2c): 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: Yes
• Crypto Engine: No
• Sram (kbytes): 0.5
• Eeprom (bytes): 64
• Self Program Memory: YES
• Dram Memory: No
• Nand Interface: No
• Picopower: Yes
• Temp. Range (deg C): -40 to 125
• 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: 4
• Input Capture Channels: 1
• Pwm Channels: 2
• 32khz Rtc: No
• Calibrated Rc Oscillator: Yes

Table 12-5.
12.11.2
110
Mode
10
11
12
13
14
15
0
1
2
3
4
5
6
7
8
9
ATtiny88 Automotive
TCCR1B – Timer/Counter1 Control Register B
WGM
13
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
Waveform Generation Mode Bit Description
WGM
12
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
• Bits 3,2 – Reserved
These bits are reserved and will always read zero.
• Bit 1:0 – WGM11:0: Waveform Generation Mode
Combined with the WGM13:2 bits found in the TCCR1B Register, these bits control the counting
sequence of the counter, the source for maximum (TOP) counter value, and what type of wave-
form generation to be used, see
Modes of operation supported by the Timer/Counter unit are: Normal mode (counter), Clear
Timer on Compare match (CTC) mode, and three types of Pulse Width Modulation (PWM)
modes.
• Bit 7 – ICNC1: Input Capture Noise Canceler
Setting this bit (to one) activates the Input Capture Noise Canceler. When the noise canceler is
activated, the input from the Input Capture pin (ICP1) is filtered. The filter function requires four
successive equal valued samples of the ICP1 pin for changing its output. The Input Capture is
therefore delayed by four oscillator cycles when the noise canceler is enabled.
• Bit 6 – ICES1: Input Capture Edge Select
Bit
Read/Write
Initial Value
WGM
11
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
(See “Modes of Operation” on page
WGM
10
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
ICNC1
R/W
7
0
Timer/Counter
Mode of Operation
Normal
PWM, Phase Correct, 8-bit
PWM, Phase Correct, 9-bit
PWM, Phase Correct, 10-bit
CTC
Fast PWM, 8-bit
Fast PWM, 9-bit
Fast PWM, 10-bit
PWM, Phase & Frequency Correct
PWM, Phase & Frequency Correct
PWM, Phase Correct
PWM, Phase Correct
CTC
(Reserved)
Fast PWM
Fast PWM
ICES1
R/W
6
0
Table
R
5
–
0
12-5.
WGM13
R/W
98.).
4
0
WGM12
R/W
3
0
TOP
0xFFFF
0x00FF
0x01FF
0x03FF
OCR1A
0x00FF
0x01FF
0x03FF
ICR1
OCR1A
ICR1
OCR1A
ICR1
–
ICR1
OCR1A
CS12
R/W
2
0
CS11
R/W
TOP
TOP
TOP
TOP
BOTTOM
–
Update of
OCR1
Immediate
Immediate
TOP
TOP
BOTTOM
TOP
TOP
Immediate
TOP
TOP
1
0
x
at
CS10
R/W
0
0
9157B–AVR–01/10
TOV1 Flag
Set on
MAX
BOTTOM
BOTTOM
BOTTOM
MAX
TOP
TOP
TOP
BOTTOM
BOTTOM
BOTTOM
BOTTOM
MAX
–
TOP
TOP
TCCR1B