参数资料
型号: MB9AF314NBGL
元件分类: 微控制器/微处理器
英文描述: 32-BIT, FLASH, 40 MHz, RISC MICROCONTROLLER, PBGA112
封装: 0.80 MM PITCH, PLASTIC, FBGA-112
文件页数: 112/114页
文件大小: 1357K
代理商: MB9AF314NBGL
97
ATmega48PA/88PA/168PA [DATASHEET]
9223F–AVR–04/14
16.
16-bit Timer/Counter1 with PWM
16.1
Features
True 16-bit design (i.e., allows 16-bit PWM)
Two independent output compare units
Double buffered output compare registers
One input capture unit
Input capture noise canceler
Clear timer on compare match (auto reload)
Glitch-free, phase correct pulse width modulator (PWM)
Variable PWM period
Frequency generator
External event counter
Four independent interrupt sources (TOV1, OCF1A, OCF1B, and ICF1)
16.2
Overview
The 16-bit Timer/Counter unit allows accurate program execution timing (event management), wave generation, and signal
timing measurement.
Most register and bit references in this section are written in general form. A lower case “n” replaces the Timer/Counter
number, and a lower case “x” replaces the output compare unit channel. However, when using the register or bit defines in a
program, the precise form must be used, i.e., TCNT1 for accessing Timer/Counter1 counter value and so on.
A simplified block diagram of the 16-bit Timer/Counter is shown in Figure 16-1 on page 98. For the actual placement of I/O
pins, refer to Section 1-1 “Pinout Atmel ATmega48PA/88PA/168PA” on page 3. CPU accessible I/O Registers, including I/O
bits and I/O pins, are shown in bold. The device-specific I/O Register and bit locations are listed in the
The PRTIM1 bit in Section 10.11.3 “PRR – Power Reduction Register” on page 40 must be written to zero to enable
Timer/Counter1 module.
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