參數(shù)資料
型號(hào): PIC16F872T-E/SS
廠商: Microchip Technology
文件頁數(shù): 162/167頁
文件大?。?/td> 0K
描述: IC MCU CMOS 20MHZ 2K FLSH 28SSOP
標(biāo)準(zhǔn)包裝: 2,100
系列: PIC® 16F
核心處理器: PIC
芯體尺寸: 8-位
速度: 20MHz
連通性: I²C,SPI
外圍設(shè)備: 欠壓檢測/復(fù)位,POR,PWM,WDT
輸入/輸出數(shù): 22
程序存儲(chǔ)器容量: 3.5KB(2K x 14)
程序存儲(chǔ)器類型: 閃存
EEPROM 大?。?/td> 64 x 8
RAM 容量: 128 x 8
電壓 - 電源 (Vcc/Vdd): 4 V ~ 5.5 V
數(shù)據(jù)轉(zhuǎn)換器: A/D 5x10b
振蕩器型: 外部
工作溫度: -40°C ~ 125°C
封裝/外殼: 28-SSOP(0.209",5.30mm 寬)
包裝: 帶卷 (TR)
94
8048C–AVR–02/12
ATtiny43U
Table 12-7 shows the COMnB[1:0] bit functionality when the WGMn[2:0] bits are set to phase
correct PWM mode.
Note:
1. A special case occurs when OCRnB equals TOP and COMnB1 is set. In this case, the Com-
pare Match is ignored, but the set or clear is done at TOP. See “Phase Correct PWM Mode” on
page 88 for more details.
Bits 3:2 – Res: Reserved Bits
These bits are reserved and will always read zero.
Bits 1:0 – WGMn[1:0]: Waveform Generation Mode
Combined with the WGMn2 bit found in the TCCRnB 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 Table 12-8. Modes of operation supported by the Timer/Counter
unit are: Normal mode (counter), Clear Timer on Compare Match (CTC) mode, and two types of
Pulse Width Modulation (PWM) modes (see “Modes of Operation” on page 85).
Note:
1. MAX = 0xFF, BOTTOM = 0x00
Table 12-7.
Compare Output Mode, Phase Correct PWM Mode(1)
COMnB1
COMnB0
Description
0
Normal port operation, OCnB disconnected.
01
Reserved
10
Clear OCnB on Compare Match when up-counting. Set OCnB on
Compare Match when down-counting.
11
Set OCnB on Compare Match when up-counting. Clear OCnB on
Compare Match when down-counting.
Table 12-8.
Waveform Generation Mode Bit Description
Mode
WGMn2
WGMn1
WGMn0
Timer/Counter
Mode of
Operation
TOP
Update of
OCRx at
TOV Flag
Set on
0
Normal
0xFF
Immediate
MAX
1
001
PWM, Phase
Correct
0xFF
TOP
BOTTOM
2
0
1
0
CTC
OCRnA
Immediate
MAX
3
011
Fast PWM
0xFF
TOP
MAX
4
100
Reserved
5
101
PWM, Phase
Correct
OCRnA
TOP
BOTTOM
6
110
Reserved
7
111
Fast PWM
OCRnA
TOP
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PIC16F872T-I/SS033 制造商:Microchip Technology Inc 功能描述:
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PIC16F873-04/SO 制造商:Microchip Technology Inc 功能描述:8BIT FLASH MCU SMD 16F873 SOIC28