參數(shù)資料
型號: AD7819YRU
廠商: ANALOG DEVICES INC
元件分類: ADC
英文描述: Circular Connector; Body Material:Aluminum Alloy; Series:KPSE06; No. of Contacts:15; Connector Shell Size:14; Connecting Termination:Crimp; Circular Shell Style:Straight Plug; Circular Contact Gender:Socket; Insert Arrangement:14-15 RoHS Compliant: No
中文描述: 1-CH 8-BIT SUCCESSIVE APPROXIMATION ADC, PARALLEL ACCESS, PDSO16
封裝: TSSOP-16
文件頁數(shù): 10/11頁
文件大?。?/td> 146K
代理商: AD7819YRU
REV. A
AD7819
10
MICROPROCESSOR INTERFACING
The parallel port on the AD7819 allows the device to be inter-
faced to a range of many different microcontrollers. This section
explains how to interface the AD7819 with some of the more
common microcontroller parallel interface protocols.
AD7819 to 8051
Figure 16 shows a parallel interface between the AD7819 and
the 8051 microcontroller. The BUSY signal on the AD7819 pro-
vides an interrupt request to the 8051 when a conversion begins.
Port 0 of the 8051 may serve as an input or output port, or as in
this case when used together, may be used as a bidirectional
low-order address and data bus. The address latch enable out-
put of the 8051 is used to latch the low byte of the address
during accesses to the device, while the high-order address byte
is supplied from Port 2. Port 2 latches remain stable when the
AD7819 is addressed, as they do not have to be turned around
(set to 1) for data input as is the case for Port 0.
AD7819
*
LATCH
DECODER
DB0
DB7
CS
RD
BUSY
*
ADDITIONAL PINS OMITTED FOR CLARITY
8051*
AD0
AD7
ALE
A8
A15
RD
INT
Figure 16. Interfacing to the 8051
AD7819 to PIC16C6x/7x
Figure 17 shows a parallel interface between the AD7819 and the
PIC16C64/65/74. The BUSY signal on the AD7819 provides
an interrupt request to the microcontroller when a conversion
begins. Of the PIC16C6x/7x range of microcontrollers, only
the PIC16C64/65/74 can provide the option of a parallel slave
port. Port D of the microcontroller will operate as an 8-bit
wide parallel slave port when control bit PSPMODE in the
TRISE register is set. Setting PSPMODE enables the port pin
RE0 to be the
RD
output and RE2 to be the
CS
output. For
this functionality, the corresponding data direction bits of the
TRISE register must be configured as outputs (reset to 0). See
user PIC16/17 Microcontroller User Manual.
PIC16C6x/7x*
PSP0
PSP7
RD
INT
*
ADDITIONAL PINS OMITTED FOR CLARITY
CS
AD7819
*
DB0
DB7
CS
RD
BUSY
Figure 17. Interfacing to the PIC16C6x/7x
AD7819 to ADSP-21xx
Figure 18 shows a parallel interface between the AD7819 and
the ADSP-21xx series of DSPs. As before, the BUSY signal on
the AD7819 provides an interrupt request to the DSP when a
conversion begins.
*
ADDITIONAL PINS OMITTED FOR CLARITY
ADDRESS
DECODE
LOGIC
EN
AD7819
*
DB0
DB7
CS
RD
BUSY
ADSP-21xx*
D0
D7
DMS
A13
A0
RD
IRQ
Figure 18. Interfacing to the ADSP-21xx
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AD7819YRUZ-REEL 功能描述:IC ADC 8BIT SAMPLING PAR 16TSSOP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 標(biāo)準(zhǔn)包裝:2,500 系列:- 位數(shù):16 采樣率(每秒):15 數(shù)據(jù)接口:MICROWIRE?,串行,SPI? 轉(zhuǎn)換器數(shù)目:1 功率耗散(最大):480µW 電壓電源:單電源 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:38-WFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:38-QFN(5x7) 包裝:帶卷 (TR) 輸入數(shù)目和類型:16 個單端,雙極;8 個差分,雙極 配用:DC1011A-C-ND - BOARD DELTA SIGMA ADC LTC2494
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