- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄15531 > EVAL-ADUC842QSZ (Analog Devices Inc)KIT DEV QUICK START ADUC842 PDF資料下載
參數(shù)資料
| 型號(hào)： | EVAL-ADUC842QSZ |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 37/88頁 |
| 文件大?。?/td> | 0K |
| 描述： | KIT DEV QUICK START ADUC842 |
| 標(biāo)準(zhǔn)包裝： | 1 |
| 系列： | QuickStart™ 套件 |
| 類型： | MCU |
| 適用于相關(guān)產(chǎn)品： | ADuC824 |
| 所含物品： | 評(píng)估板、電源、纜線、軟件和說明文檔 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁當(dāng)前第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁第62頁第63頁第64頁第65頁第66頁第67頁第68頁第69頁第70頁第71頁第72頁第73頁第74頁第75頁第76頁第77頁第78頁第79頁第80頁第81頁第82頁第83頁第84頁第85頁第86頁第87頁第88頁
ADuC841/ADuC842/ADuC843
Rev. 0 | Page 42 of 88
PULSE-WIDTH MODULATOR (PWM)
The PWM on the ADuC841/ADuC842/ADuC843 is a highly
flexible PWM offering programmable resolution and an input
clock, and can be configured for any one of six different modes
of operation. Two of these modes allow the PWM to be config-
ured as a ∑- DAC with up to 16 bits of resolution. A block
diagram of the PWM is shown in Figure 47. Note the PWM
clock’s sources are different for the ADuC841, and are given in
Table 17.
CLOCK
SELECT
PROGRAMMABLE
DIVIDER
COMPARE
MODE
PWM0H/L
PWM1H/L
f
VCO
TO/EXTERNAL PWM CLOCK
fXTAL/15
fXTAL
P2.6
P2.7
16-BIT PWM COUNTER
03260-0-046
Figure 47. PWM Block Diagram
The PWM uses five SFRs: the control SFR (PWMCON) and
four data SFRs (PWM0H, PWM0L, PWM1H, and PWM1L).
PWMCON, as described in the following sections, controls the
different modes of operation of the PWM as well as the PWM
clock frequency.
PWM0H/L and PWM1H/L are the data registers that deter-
mine the duty cycles of the PWM outputs. The output pins that
the PWM uses are determined by the CFG841/CFG842 register,
and can be either P2.6 and P2.7 or P3.4 and P3.3. In this section
of the data sheet, it is assumed that P2.6 and P2.7 are selected as
the PWM outputs.
To use the PWM user software, first write to PWMCON to
select the PWM mode of operation and the PWM input clock.
Writing to PWMCON also resets the PWM counter. In any of
the 16-bit modes of operation (Modes 1, 3, 4, 6), user software
should write to the PWM0L or PWM1L SFRs first. This value is
written to a hidden SFR. Writing to the PWM0H or PWM1H
SFRs updates both the PWMxH and the PWMxL SFRs but does
not change the outputs until the end of the PWM cycle in
progress. The values written to these 16-bit registers are then
used in the next PWM cycle.
PWMCON PWM
Control SFR
SFR Address
AEH
Power-On Default
00H
Bit Addressable
No
Table 17. PWMCON SFR Bit Designations
Bit No.
Name
Description
7
SNGL
Turns off PMW output at P2.6 or P3.4, leaving the port pin free for digital I/O.
6
MD2
PWM Mode Bits.
5
MD1
The MD2/1/0 bits choose the PWM mode as follows:
MD2
MD1
MD0
Mode
0
Mode 0: PWM Disabled
0
1
Mode 1: Single variable resolution PWM on P2.7 or P3.3
0
1
0
Mode 2: Twin 8-bit PWM
0
1
Mode 3: Twin 16-bit PWM
1
0
Mode 4: Dual NRZ 16-bit ∑- DAC
1
0
1
Mode 5: Dual 8-bit PWM
1
0
Mode 6: Dual RZ 16-bit ∑- DAC
4
MD0
1
Reserved
3
CDIV1
PWM Clock Divider.
Scale the clock source for the PWM counter as follows:
CDIV1
CDIV0
Description
0
PWM Counter = Selected Clock/1
0
1
PWM Counter = Selected Clock/4
1
0
PWM Counter = Selected Clock/16
2
CDIV0
1
PWM Counter = Selected Clock/64
1
CSEL1
PWM Clock Divider.
Select the clock source for the PWM as follows:
CSEL1
CSEL0
Description
0
PWM Clock = fXTAL/15, ADuC841 = fOCS/DIVIDE FACTOR /15 (see the CFG841 register)
0
1
PWM Clock = fXTAL, ADuC841 = fOCS/DIVIDE FACTOR (see the CFG841 register)
1
0
PWM Clock = External input at P3.4/T0
0
CSEL0
1
PWM Clock = fVCO = 16.777216 MHz, ADuC841 = fOSC
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AIUR-06-4R7K | INDUCTOR POWER 4.7UH 10% T/H |
| V110C8C75BL3 | CONVERTER MOD DC/DC 8V 75W |
| EVAL-ADUC842QS | KIT DEV FOR ADUC842 QUICK START |
| V110C8C75BL | CONVERTER MOD DC/DC 8V 75W |
| AIUR-09-821K | INDUCTOR POWER 820UH 10% T/H |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| EVAL-ADUC845QS | 制造商:Analog Devices 功能描述:QUICK START DEVELOPMENT SYSTEM - Bulk |
| EVAL-ADUC845QSP | 制造商:Analog Devices 功能描述:MICROCONVERTER?, 1-CYCLE 8052 MCU + 10-CHANNEL, DUAL 24-BIT - Bulk |
| EVAL-ADUC845QSPZ | 功能描述:KIT DEV QUICK START ADUC845 RoHS:是 類別:編程器，開發(fā)系統(tǒng) >> 通用嵌入式開發(fā)板和套件（MCU、DSP、FPGA、CPLD等） 系列:QuickStart™ PLUS 套件 產(chǎn)品培訓(xùn)模塊:Blackfin® Processor Core Architecture Overview Blackfin® Device Drivers Blackfin® Optimizations for Performance and Power Consumption Blackfin® System Services 特色產(chǎn)品:Blackfin? BF50x Series Processors 標(biāo)準(zhǔn)包裝:1 系列:Blackfin® 類型:DSP 適用于相關(guān)產(chǎn)品:ADSP-BF548 所含物品:板，軟件，4x4 鍵盤，光學(xué)撥輪，QVGA 觸摸屏 LCD 和 40G 硬盤 配用:ADZS-BFBLUET-EZEXT-ND - EZ-EXTENDER DAUGHTERBOARDADZS-BFLLCD-EZEXT-ND - BOARD EXT LANDSCAP LCD INTERFACE 相關(guān)產(chǎn)品:ADSP-BF542BBCZ-4A-ND - IC DSP 16BIT 400MHZ 400CSBGAADSP-BF544MBBCZ-5M-ND - IC DSP 16BIT 533MHZ MDDR 400CBGAADSP-BF542MBBCZ-5M-ND - IC DSP 16BIT 533MHZ MDDR 400CBGAADSP-BF542KBCZ-6A-ND - IC DSP 16BIT 600MHZ 400CSBGAADSP-BF547MBBCZ-5M-ND - IC DSP 16BIT 533MHZ MDDR 400CBGAADSP-BF548BBCZ-5A-ND - IC DSP 16BIT 533MHZ 400CSBGAADSP-BF547BBCZ-5A-ND - IC DSP 16BIT 533MHZ 400CSBGAADSP-BF544BBCZ-5A-ND - IC DSP 16BIT 533MHZ 400CSBGAADSP-BF542BBCZ-5A-ND - IC DSP 16BIT 533MHZ 400CSBGA |
| EVAL-ADUC845QSZ | 功能描述:KIT DEV FOR ADUC845 QUICK START RoHS:是 類別:編程器，開發(fā)系統(tǒng) >> 通用嵌入式開發(fā)板和套件（MCU、DSP、FPGA、CPLD等） 系列:QuickStart™ 套件 標(biāo)準(zhǔn)包裝:1 系列:PICDEM™ 類型:MCU 適用于相關(guān)產(chǎn)品:PIC10F206，PIC16F690，PIC16F819 所含物品:板，線纜，元件，CD，PICkit 編程器 產(chǎn)品目錄頁面:659 (CN2011-ZH PDF) |
| EVAL-ADUC846QS | 制造商:AD 制造商全稱:Analog Devices 功能描述:MicroConverter, Dual 16-Bit ADCs with Embedded 62kB FLASH MCU |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。