- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄17111 > EVAL-ADUC832QSZ (Analog Devices Inc)KIT DEV FOR ADUC832 QUICK START PDF資料下載
參數(shù)資料
| 型號： | EVAL-ADUC832QSZ |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 53/92頁 |
| 文件大?。?/td> | 0K |
| 描述： | KIT DEV FOR ADUC832 QUICK START |
| 產(chǎn)品培訓(xùn)模塊： | Process Control |
| 標(biāo)準(zhǔn)包裝： | 1 |
| 系列： | QuickStart™ 套件 |
| 類型： | MCU |
| 適用于相關(guān)產(chǎn)品： | ADuC832 |
| 所含物品： | 評估板，線纜，電源，軟件和文檔 |
| 其它名稱： | EVAL-ADUC832QS EVAL-ADUC832QS-ND |
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頁第49頁第50頁第51頁第52頁當(dāng)前第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
Data Sheet
ADuC832
Rev. B | Page 57 of 92
MODE 4: DUAL NRZ 16-BIT Σ-Δ DAC
Mode 4 provides a high speed PWM output similar to that of a
Σ-Δ DAC. Typically, this mode is used with the PWM clock
equal to 16.777216 MHz.
In this mode, P2.6 and P2.7 are updated every PWM clock
(60 ns in the case of 16 MHz). Over every 65,536 cycles (16-bit
PWM) PWM0 (P2.6) is high for PWM0H/PWM0L cycles and
low for (65,536 PWM0H/L) cycles. Similarly PWM1 (P2.7) is
high for PWM1H/PWM1L cycles and low for (65,536
PWM1H/PWM1L) cycles.
For example, if PWM1H/L was set to 4010H (slightly above one
quarter of FS), then typically P2.7 is low for three clocks and
high for one clock (each clock is approximately 60 ns). Over
every 65,536 clocks, the PWM compensates for the fact that the
output should be slightly above one quarter of full scale by
having a high cycle followed by only two low cycles.
16.78MHz
16-BIT
60s
0
16-BIT
CARRY OUT AT P1.0
CARRY OUT AT P2.7
PWM0H/L = C000H
PWM1H/L = 4000H
0
1
0
LATCH
0
1
0
02987-
049
Figure 60. PWM Mode 4
For faster DAC outputs (at lower resolution) write 0s to the
LSBs that are not required. If, for example, only 12-bit perfor-
mance is required, then write 0s to the four LSBs. This means
that a 12-bit accurate Σ-Δ DAC output can occur at 4.096 kHz.
Similarly, writing 0s to the eight LSBs gives an 8-bit accurate
Σ-Δ DAC output at 65 kHz.
MODE 5: DUAL 8-BIT PWM
In Mode 5, the duty cycle of the PWM outputs and the resolu-
tion of the PWM outputs are individually programmable. The
maximum resolution of the PWM output is eight bits. The
output resolution is set by the PWM1L and PWM1H SFRs for
the P2.6 and P2.7 outputs, respectively. PWM0L and PWM0H
set the duty cycles of the PWM outputs at P2.6 and P2.7,
respectively. Both PWMs have same clock source and clock
divider.
P2.7
P2.6
PWM COUNTERS
PWM1H
0
PWM1L
PWM0H
PWM0L
02987-
050
Figure 61. PWM Mode 5
MODE 6: DUAL RZ 16-BIT Σ-Δ DAC
Mode 6 provides a high speed PWM output similar to that of a
Σ-Δ DAC. Mode 6 operates very similarly to Mode 4. However,
the key difference is that Mode 6 provides return-to-zero (RZ)
Σ-Δ DAC output. Mode 4 provides nonreturn-to-zero Σ-Δ DAC
outputs. The RZ mode ensures that any difference in the rise
and fall times does not affect the Σ-Δ DAC INL. However, the
RZ mode halves the dynamic range of the Σ-Δ DAC outputs
from 0 V AVDD down to 0 V AVDD/2. For best results, this
mode should be used with a PWM clock divider of four.
If PWM1H is set to 4010H (slightly above one quarter of FS)
then typically P2.7 is low for three full clocks (3 × 60 ns), high
for half a clock (30 ns), and then low again for half a clock
(30 ns) before repeating itself. Over every 65,536 clocks, the
PWM compensates for the fact that the output should be slightly
above one quarter of full scale by occasionally leaving the
output high for two half clocks in four.
4MHz
16-BIT
240 s
0
16-BIT
CARRY OUT AT P2.6
CARRY OUT AT P2.7
PWM0H/L = C000H
PWM1H/L = 4000H
0
1
0
LATCH
0
1
0
240 s
0, 3/4, 1/2, 1/4, 0
02987-
051
Figure 62. PWM Mode 6
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| HBM15DRXS | CONN EDGECARD 30POS DIP .156 SLD |
| PCX1H270MCL1GS | CAP ALUM 27UF 50V 20% SMD |
| HSM08DRKI | CONN EDGECARD 16POS DIP .156 SLD |
| 0210490857 | CABLE JUMPER 1.25MM .051M 17POS |
| EVAL-ADUC831QSZ | KIT DEV FOR ADUC831 QUICK START |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| EVAL-ADUC834QS | 制造商:Analog Devices 功能描述:DATA ACQ SYS, MICROCNVRTR, DUAL 16BIT/24BIT - ADCS W/ EMBEDD - Bulk 制造商:Analog Devices 功能描述:8052 ADUC834 QUICKSTART DEV KIT |
| EVAL-ADUC834QSZ | 功能描述:KIT DEV QUICK START ADUC834 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-ADUC836QS | 制造商:Analog Devices 功能描述:MCU 8BIT 8052 CISC 62KB+4KB FLASH 3.6V 48LQFP - Bulk 制造商:Analog Devices 功能描述:KIT- ADUC836 DEV SYSTEM |
| EVAL-ADUC841QS | 制造商:AD 制造商全稱:Analog Devices 功能描述:MicroConverter 12-Bit ADCs and DACs with Embedded High Speed 62-kB Flash MCU |
| EVAL-ADUC841QSP2 | 制造商:AD 制造商全稱:Analog Devices 功能描述:MicroConverter 12-Bit ADCs and DACs with Embedded High Speed 62-kB Flash MCU |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。