- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄15530 > EVAL-ADUC7128QSPZ (Analog Devices Inc)KIT DEV FOR ADUC7128 PDF資料下載
參數(shù)資料
| 型號： | EVAL-ADUC7128QSPZ |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 49/92頁 |
| 文件大小： | 0K |
| 描述： | KIT DEV FOR ADUC7128 |
| 產(chǎn)品培訓(xùn)模塊： | ARM7 Applications & Tools Intro to ARM7 Core & Microconverters |
| 設(shè)計資源： | ADUC7128 Dev System Schematic ADUC7128 Gerber Files |
| 標(biāo)準(zhǔn)包裝： | 1 |
| 系列： | QuickStart™ PLUS 套件 |
| 類型： | MCU |
| 適用于相關(guān)產(chǎn)品： | ADuC7128 |
| 所含物品： | 評估板、電源、纜線、軟件、仿真器和說明文檔 |
| 產(chǎn)品目錄頁面： | 739 (CN2011-ZH PDF) |
| 相關(guān)產(chǎn)品： | ADUC7128BSTZ126-RLDKR-ND - IC DAS MCU ARM7 ADC/DDS 64-LQFP ADUC7128BCPZ126-RLDKR-ND - IC DAS MCU ARM7 ADC/DDS 64-LFCSP ADUC7128BSTZ126-RLCT-ND - IC DAS MCU ARM7 ADC/DDS 64-LQFP ADUC7128BCPZ126-RLCT-ND - IC DAS MCU ARM7 ADC/DDS 64-LFCSP ADUC7128BSTZ126-RLTR-ND - IC DAS MCU ARM7 ADC/DDS 64-LQFP ADUC7128BCPZ126-RLTR-ND - IC DAS MCU ARM7 ADC/DDS 64-LFCSP ADUC7128BSTZ126-ND - IC DAS MCU ARM7 ADC/DDS 64-LQFP ADUC7128BCPZ126-ND - IC DAS MCU ARM7 ADC/DDS 64-LFCSP |
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頁當(dāng)前第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頁第89頁第90頁第91頁第92頁
ADuC7128/ADuC7129
Rev. 0 | Page 53 of 92
Table 67. PWMCON2 MMR Bit Designations
Bit
Value
Name
Description
7
CSEN
Set to 1 by the user to enable the PWM
to generate a convert start signal.
Cleared by user to disable the PWM
convert start signal.
6:4
RSVD
Reserved. This bit should be set to 0 by
the user.
CSD3
Convert Start Delay. Delays the convert
start signal by a number of clock pulses.
CSD2
CSD1
CSD0
0000
4 clock pulses.
0001
8 clock pulses.
0010
12 clock pulses.
0011
16 clock pulses.
0100
20 clock pulses.
0101
24 clock pulses.
0110
28 clock pulses.
0111
32 clock pulses.
1000
36 clock pulses.
1001
40 clock pulses.
1010
44 clock pulses.
1011
48 clock pulses.
1100
52 clock pulses.
1101
56 clock pulses.
1110
60 clock pulses.
3:0
1111
64 clock pulses.
When calculating the time from the convert start delay to the
start of an ADC conversion, the user needs to take account of
internal delays. The example below shows the case for a delay of
four clocks. One additional clock is required to pass the convert
start signal to the ADC logic. Once the ADC logic receives the
convert start signal an ADC conversion begins on the next
ADC clock edge (see Figure 50).
UCLOCK
LOW SIDE
COUNT
PWM SIGNAL
SIGNAL PASSED
TO ADC LOGIC
06
02
0-
04
5
TO CONVST
Figure 50. ADC Conversion
Quadrature Encoder
A quadrature encoder is used to determine both the speed and
direction of a rotating shaft. In its most common form, there are
two digital outputs, S1 and S2. As the shaft rotates, both S1 and
S2 toggle; however, they are 90° out of phase. The leading output
determines the direction of rotation. The time between each
transition indicates the speed of rotation.
CLOCKWISE
COUNTER CLOCKWISE
S1
S2
00
01
11
10
00
01
11
10
00
01
11
10
00
06
02
0-
0
46
Figure 51. Quadrate Encoder Input Values
The quadrature encoder takes the incremental input shown in
Figure 51 and increments or decrements a counter depending
on the direction and speed of the rotating shaft.
On the ADuC7128/ADuC7129, the internal counter is clocked
on the rising edge of the S1 input, and the S2 input indicates the
direction of rotation/count. The counter increments when S2
is high and decrements when it is low.
In addition, if the software has prior knowledge of the direction
of rotation, one input can be ignored (S2) and the other can act
as a clock (S1).
For additional flexibility, all inputs can be internally inverted
prior to use.
The quadrature encoder operates asynchronously from the
system clock.
Input Filtering
Filtering can be applied to the S1 input by setting the FILTEN
bit in QENCON. S1 normally acts as the clock to the counter;
however, the filter can be used to ignore positive edges on S1
unless there has been a high or a low pulse on S2 between two
positive edges on S1 (see Figure 52).
S1
S2 HIGH PULSE
S2 LOW PULSE
06
02
0-
04
7
Figure 52. S1 Input Filtering
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| EYM15DRSN | CONN EDGECARD 30POS DIP .156 SLD |
| AIUR-06-272K | INDUCTOR POWER 2700UH 10% T/H |
| V300C3V3C50BF | CONVERTER MOD DC/DC 3.3V 50W |
| AIUR-06-182K | INDUCTOR POWER 1800UH 10% T/H |
| EGM15DRSN | CONN EDGECARD 30POS DIP .156 SLD |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| EVAL-ADUC7128QSPZ2 | 制造商:AD 制造商全稱:Analog Devices 功能描述:Precision Analog Microcontroller ARM7TDMI MCU with 12-Bit ADC and DDS DAC |
| EVAL-ADUC7129QSPZ | 制造商:Analog Devices 功能描述:- Bulk |
| EVAL-ADUC812QS | 制造商:Analog Devices 功能描述:DEVELOPMENT KIT SYSTEM |
| EVAL-ADUC812QSP | 制造商:AD 制造商全稱:Analog Devices 功能描述:MicroConverter㈢, Multichannel 12-Bit ADC with Embedded Flash MCU |
| EVAL-ADUC812QSZ | 功能描述:BOARD EVALUATION FOR ADUC812 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) |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。