參數(shù)資料
型號: ATTINY43U-SU
廠商: Atmel
文件頁數(shù): 152/158頁
文件大小: 0K
描述: MCU AVR 4K FLASH 8MHZ 20-SOIC
產(chǎn)品培訓(xùn)模塊: ATtiny43U Overview
MCU Product Line Introduction
tinyAVR Introduction
標(biāo)準(zhǔn)包裝: 37
系列: AVR® ATtiny
核心處理器: AVR
芯體尺寸: 8-位
速度: 8MHz
連通性: USI
外圍設(shè)備: 欠壓檢測/復(fù)位,POR,PWM,溫度傳感器,WDT
輸入/輸出數(shù): 16
程序存儲器容量: 4KB(2K x 16)
程序存儲器類型: 閃存
EEPROM 大?。?/td> 64 x 8
RAM 容量: 256 x 8
電壓 - 電源 (Vcc/Vdd): 1.8 V ~ 5.5 V
數(shù)據(jù)轉(zhuǎn)換器: A/D 4x10b
振蕩器型: 內(nèi)部
工作溫度: -40°C ~ 85°C
封裝/外殼: 20-SOIC(0.295",7.50mm 寬)
包裝: 管件
產(chǎn)品目錄頁面: 613 (CN2011-ZH PDF)
配用: ATSTK600-TINYX3U-ND - STK600 SOCKET/ADAPTER TINYX3U
93
8048C–AVR–02/12
ATtiny43U
Table 12-4 on page 93 shows the COMnA[1:0] bit functionality when the WGMn[2:0] bits are set
to phase correct PWM mode.
Note:
1. A special case occurs when OCRnA equals TOP and COMnA1 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 5:4 – COMnB[1:0]: Compare Match Output B Mode
These bits control the Output Compare pin (OCnB) behavior. If one or both of the COMnB[1:0]
bits are set, the OCnB output overrides the normal port functionality of the I/O pin it is connected
to. However, note that the Data Direction Register (DDR) bit corresponding to the OCnB pin
must be set in order to enable the output driver.
When OCnB is connected to the pin, the function of the COMnB[1:0] bits depends on the
WGMn[2:0] bit setting. Table 12-5 on page 93 shows the COMnB[1:0] bit functionality when the
WGMn[2:0] bits are set to a normal or CTC mode (non-PWM).
Table 12-6 on page 93 shows the COMnB[1:0] bit functionality when the WGMn[2:0] bits are set
to fast 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 “Fast PWM Mode” on page 86
for more details.
Table 12-4.
Compare Output Mode, Phase Correct PWM Mode(1)
COMnA1
COMnA0
Description
0
Normal port operation, OCnA disconnected.
01
WGMn2 = 0: Normal Port Operation, OCnA Disconnected.
WGMn2 = 1: Toggle OCnA on Compare Match.
10
Clear OCnA on Compare Match when up-counting. Set OCnA on
Compare Match when down-counting.
11
Set OCnA on Compare Match when up-counting. Clear OCnA on
Compare Match when down-counting.
Table 12-5.
Compare Output Mode, non-PWM Mode
COMnB1
COMnB0
Description
0
Normal port operation, OCnB disconnected.
0
1
Toggle OCnB on Compare Match
1
0
Clear OCnB on Compare Match
1
Set OCnB on Compare Match
Table 12-6.
Compare Output Mode, Fast PWM Mode
COMnB1
COMnB0
Description
0
Normal port operation, OCnB disconnected.
01
Reserved
1
0
Clear OCnB on Compare Match, set OC0B at TOP
1
Set OCnB on Compare Match, clear OC0B at TOP
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