- 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)： | 82/92頁 |
| 文件大?。?/td> | 0K |
| 描述： | KIT DEV FOR ADUC832 QUICK START |
| 產(chǎn)品培訓模塊： | Process Control |
| 標準包裝： | 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頁當前第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 83 of 92
LATCH
SRAM
A8 TO A15
A0 TO A7
D0 TO D7
(DATA)
ADuC832
P2
ALE
P0
0
298
7-
0
76
RD
WR
OE
WE
Figure 88. External Data Memory Interface (64 kB Address Space)
If access to more than 64 kB of RAM is desired, a feature unique
to the ADuC832 allows addressing up to 16 MB of external
RAM simply by adding an additional latch, as illustrated in
LATCH
ADuC832
RD
P2
ALE
P0
WR
LATCH
SRAM
OE
A8 TO A15
A0 TO A7
D0 TO D7
(DATA)
WE
A16 TO A23
0
29
87
-07
7
Figure 89. External Data Memory Interface (16 MB Address Space)
In either implementation, Port 0 (P0) serves as a multiplexed
address/data bus. It emits the low byte of the data pointer (DPL)
as an address, which is latched by a pulse of ALE prior to data
being placed on the bus by the ADuC832 (write operation) or
the SRAM (read operation). Port 2 (P2) provides the data
pointer page byte (DPP) to be latched by ALE, followed by the
data pointer high byte (DPH). If no latch is connected to P2,
DPP is ignored by the SRAM, and the 8051 standard of 64 kB
external data memory access is maintained.
POWER SUPPLIES
The ADuC832 operational power supply voltage range is 2.7 V
to 5.25 V. Although the guaranteed data sheet specifications are
given only for power supplies within 2.7 V to 3.6 V or 10% of
the nominal 5 V level, the chip functions equally well at any
power supply level between 2.7 V and 5.5 V.
Note that Figure 90 and Figure 91 refer to the MQFP package.
For the LFCSP package, connect the extra DVDD, DGND, AVDD,
and AGND in the same manner.
Separate analog and digital power supply pins (AVDD and DVDD,
respectively) allow AVDD to be relatively free of noisy digital signals
often present on the system DVDD line. However, though AVDD
and DVDD can be powered from two separate supplies if desired,
they must remain within 0.3 V of one another at all times to
avoid damaging the chip (as per the Absolute Maximum Ratings
section). Therefore, it is recommended that, unless AVDD and
DVDD are connected directly together, back-to-back Schottky
diodes be connected between them as shown in Figure 90.
DVDD
ADuC832
AGND
AVDD
0.1F
10F
ANALOG SUPPLY
10F
DGND
DIGITAL SUPPLY
02
98
7-
0
78
Figure 90. External Dual-Supply Connections
As an alternative to providing two separate power supplies,
the user can keep AVDD quiet by placing a small series resistor
and/or ferrite bead between it and DVDD, and then decoupling
AVDD separately to ground. An example of this configuration is
shown in Figure 91. With this configuration, other analog circuitry
(such as op amps and voltage reference) can be powered from
the AVDD supply line as well. The user should still include back-
to-back Schottky diodes between AVDD and DVDD to protect
from power-up and power-down transient conditions that may
separate the two supply voltages momentarily.
10F
DVDD
ADuC832
AGND
DGND
0.1F
DIGITAL SUPPLY
1.6
BEAD
AVDD
0
29
87
-07
9
Figure 91. External Single-Supply Connections
Note that, in both Figure 90 and Figure 91, a large value (10 μF)
reservoir capacitor is connected to DVDD and a separate 10 μF
capacitor is connected to AVDD. Also, local small-value (0.1 μF)
capacitors are located at each AVDD pin of the chip. As per stan-
dard design practice, be sure to include all of these capacitors,
and ensure that the smaller capacitors are close to each AVDD
pin with trace lengths as short as possible. Connect the ground
terminal of each of these capacitors directly to the underlying
ground plane. Finally, it should also be noted that, at all times,
the analog and digital ground pins on the ADuC832 must be
referenced to the same system ground reference point.
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 標準包裝: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。