參數(shù)資料
型號: ATMEGA324PA-MCH
廠商: Atmel
文件頁數(shù): 69/160頁
文件大?。?/td> 0K
描述: MCU AVR 32KB FLASH 44-VQFN
產品培訓模塊: MCU Product Line Introduction
megaAVR Introduction
標準包裝: 490
系列: AVR® ATmega
核心處理器: AVR
芯體尺寸: 8-位
速度: 20MHz
連通性: I²C,SPI,UART/USART
外圍設備: 欠壓檢測/復位,POR,PWM,WDT
輸入/輸出數(shù): 32
程序存儲器容量: 32KB(16K x 16)
程序存儲器類型: 閃存
EEPROM 大?。?/td> 1K x 8
RAM 容量: 2K x 8
電壓 - 電源 (Vcc/Vdd): 1.8 V ~ 5.5 V
數(shù)據轉換器: A/D 8x10b
振蕩器型: 內部
工作溫度: -40°C ~ 85°C
封裝/外殼: 44-VQFN 裸露焊盤
包裝: 托盤
配用: ATSTK600-ND - DEV KIT FOR AVR/AVR32
160
8272E–AVR–04/2013
ATmega164A/PA/324A/PA/644A/PA/1284/P
17.11.2
TCCR2B – Timer/Counter Control Register B
Bit 7 – FOC2A: Force Output Compare A
The FOC2A bit is only active when the WGM bits specify a non-PWM mode.
However, for ensuring compatibility with future devices, this bit must be set to zero when
TCCR2B is written when operating in PWM mode. When writing a logical one to the FOC2A bit,
an immediate Compare Match is forced on the Waveform Generation unit. The OC2A output is
changed according to its COM2A1:0 bits setting. Note that the FOC2A bit is implemented as a
strobe. Therefore it is the value present in the COM2A1:0 bits that determines the effect of the
forced compare.
A FOC2A strobe will not generate any interrupt, nor will it clear the timer in CTC mode using
OCR2A as TOP.
The FOC2A bit is always read as zero.
Bit 6 – FOC2B: Force Output Compare B
The FOC2B bit is only active when the WGM bits specify a non-PWM mode.
However, for ensuring compatibility with future devices, this bit must be set to zero when
TCCR2B is written when operating in PWM mode. When writing a logical one to the FOC2B bit,
an immediate Compare Match is forced on the Waveform Generation unit. The OC2B output is
changed according to its COM2B1:0 bits setting. Note that the FOC2B bit is implemented as a
strobe. Therefore it is the value present in the COM2B1:0 bits that determines the effect of the
forced compare.
A FOC2B strobe will not generate any interrupt, nor will it clear the timer in CTC mode using
OCR2B as TOP.
The FOC2B bit is always read as zero.
Bits 5:4 – Reserved
These bits are reserved and will always read as zero.
Bit 3 – WGM22: Waveform Generation Mode
Bit 2:0 – CS22:0: Clock Select
Bit
7
6
5
4
3
210
FOC2A
FOC2B
WGM22
CS22
CS21
CS20
TCCR2B
Read/Write
W
R
R/W
Initial Value
0
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