ATMEGA168-15AZ Atmel, ATMEGA168-15AZ Datasheet - Page 132

• Manufacturer Part Number: ATMEGA168-15AZ
• Description: MCU AVR 16K FLASH 15MHZ 32-TQFP
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA168-15AZ

• Package / Case: 32-TQFP, 32-VQFP
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Operating Temperature: -40°C ~ 125°C
• Speed: 16MHz
• Number Of I /o: 23
• Eeprom Size: 512 x 8
• Core Processor: AVR
• Program Memory Type: FLASH
• Ram Size: 1K x 8
• Program Memory Size: 16KB (16K x 8)
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Connectivity: I²C, SPI, UART/USART
• Core Size: 8-Bit
• Cpu Family: ATmega
• Device Core: AVR
• Device Core Size: 8b
• Frequency (max): 16MHz
• Interface Type: 2-Wire/USART/Serial
• Total Internal Ram Size: 1KB
• # I/os (max): 23
• Number Of Timers - General Purpose: 3
• Operating Supply Voltage (typ): 3.3/5V
• Operating Supply Voltage (max): 5.5V
• Operating Supply Voltage (min): 2.7V
• On-chip Adc: 8-chx10-bit
• Instruction Set Architecture: RISC
• Operating Temp Range: -40C to 125C
• Operating Temperature Classification: Automotive
• Mounting: Surface Mount
• Pin Count: 32
• Package Type: TQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

14.10.5
14.10.6
14.10.7
14.10.8
132
ATmega48/88/168 Automotive
Output Compare Register 1 A – OCR1AH and OCR1AL
Output Compare Register 1 B – OCR1BH and OCR1BL
Input Capture Register 1 – ICR1H and ICR1L
Timer/Counter1 Interrupt Mask Register – TIMSK1
The Output Compare Registers contain a 16-bit value that is continuously compared with the
counter value (TCNT1). A match can be used to generate an Output Compare interrupt, or to
generate a waveform output on the OC1x pin.
The Output Compare Registers are 16-bit in size. To ensure that both the high and low bytes are
written simultaneously when the CPU writes to 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.
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.
• Bit 7, 6 – Res: Reserved Bits
These bits are unused bits in the ATmega48/88/168, and will always read as zero.
• Bit 5 – ICIE1: 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 (see “Interrupts” on page 52) is executed when the ICF1 Flag, located in TIFR1, is set.
Bit
Read/Write
Initial Value
Bit
Read/Write
Initial Value
Bit
Read/Write
Initial Value
Bit
Read/Write
Initial Value
See “Accessing 16-bit Registers” on page 107.
See “Accessing 16-bit Registers” on page 107.
R/W
R/W
R/W
R
7
0
7
0
7
0
7
–
0
R/W
R/W
R/W
R
6
–
0
6
0
6
0
6
0
ICIE1
R/W
R/W
R/W
R/W
5
0
5
0
5
0
5
0
R/W
R/W
R/W
R
4
–
0
4
0
4
0
4
0
OCR1A[15:8]
OCR1B[15:8]
OCR1A[7:0]
OCR1B[7:0]
ICR1[15:8]
ICR1[7:0]
R/W
R/W
R/W
R
3
–
0
3
0
3
0
3
0
OCIE1B
R/W
R/W
R/W
R/W
2
0
2
0
2
0
2
0
OCIE1A
R/W
R/W
R/W
R/W
1
0
1
0
1
0
1
0
TOIE1
R/W
R/W
R/W
R/W
0
0
0
0
0
0
0
0
7530I–AVR–02/10
OCR1AH
OCR1BH
OCR1AL
OCR1BL
TIMSK1
ICR1H
ICR1L