ATmega16HVB Atmel Corporation, ATmega16HVB Datasheet - Page 82

• Manufacturer Part Number: ATmega16HVB
• Manufacturer: Atmel Corporation

Specifications of ATmega16HVB

• Flash (kbytes): 16 Kbytes
• Pin Count: 44
• Max. Operating Frequency: 8 MHz
• Cpu: 8-bit AVR
• # Of Touch Channels: 8
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 17
• Ext Interrupts: 15
• 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): 12
• Adc Speed (ksps): 1.9
• Resistive Touch Screen: No
• Temp. Sensor: Yes
• Crypto Engine: No
• Sram (kbytes): 1
• 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: 4.0 to 25
• Operating Voltage (vcc): 4.0 to 25
• Fpu: No
• Mpu / Mmu: no / no
• Timers: 2
• Output Compare Channels: 4
• Input Capture Channels: 2
• 32khz Rtc: No
• Calibrated Rc Oscillator: Yes

17. Timer/Counter (T/C0,T/C1)
17.1
17.2
17.2.1
82
Features
Overview
ATmega16HVB/32HVB
Registers
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•
•
•
•
Timer/Counter n is a general purpose 8-bit/16-bit Timer/Counter module, with two/one Output
Compare units and Input Capture feature.
The Atmel ATmega16HVB/32HVB has two Timer/Counters, Tim er/Counter0 and
Timer/Counter1. The functionality for both Timer/Counters is described below. Timer/Counter0
and Timer/Counter1 have different Timer/Counter registers, as shown in
page
The Timer/Counter general operation is described in 8-bit/16-bit mode. A simplified block dia-
gram of the 8-bit/16-bit Timer/Counter is shown in
including I/O bits and I/O pins, are shown in bold. The device-specific I/O Register and bit loca-
tions are listed in the
Figure 17-1. 8-bit/16-bit timer/counter block diagram.
The Timer/Counter Low Byte Register (TCNTnL) and Output Compare Registers (OCRnA and
OCRnB) are 8-bit registers. Interrupt request (abbreviated to Int.Req. in
all visible in the Timer Interrupt Flag Register (TIFR). All interrupts are individually masked with
the Timer Interrupt Mask Register (TIMSK). TIFR and TIMSK are not shown in the figure.
In 16-bit mode the Timer/Counter consists one more 8-bit register, the Timer/Counter High Byte
Register (TCNTnH). Furthermore, there is only one Output Compare Unit in 16-bit mode as the
two Output Compare Registers, OCRnA and OCRnB, are combined to one 16-bit Output Com-
Clear timer on compare match (auto reload)
Input capture unit
Four independent interrupt sources (TOVn, OCFnA, OCFnB, ICFn)
8-bit mode with two independent output compare units
16-bit mode with one independent output compare unit
255.
”Register description” on page
TCCRnA
TCNTnH
OCRnB
=
Timer/Counter
Count
Clear
TCNTnL
TCCRnB
OCRnA
=
Control Logic
TOP
Detector
Figure
Edge
clk
94.
=
Tn
17-1. CPU accessible I/O Registers,
Canceler
Fixed TOP value
( From Prescaler )
Noise
Clock Select
Detector
Edge
TOVn (Int. Req.)
OCnA (Int. Req.)
OCnB (Int. Req.)
ICFn (Int. Req.)
Figure
”Register summary” on
ICPn1
ICPn0
Tn
17-1) signals are
8042D–AVR–10/11