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| 型号： | AD7819YRZ |
| 厂商： | Analog Devices Inc |
| 文件页数： | 2/11页 |
| 文件大小： | 0K |
| 描述： | IC ADC 8BIT SAMPLING PAR 16-SOIC |
| 标准包装： | 48 |
| 位数： | 8 |
| 采样率（每秒）： | 200k |
| 数据接口： | 并联 |
| 转换器数目： | 1 |
| 功率耗散（最大）： | 17.5mW |
| 电压电源： | 单电源 |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 16-SOIC |
| 包装： | 管件 |
| 输入数目和类型： | 1 个单端，单极 |
| 产品目录页面： | 779 (CN2011-ZH PDF) |
REV. B
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*
8051*
AD0–AD7
ALE
A8–A15
RD
INT
LATCH
DECODER
DB0–DB7
CS
RD
BUSY
*ADDITIONAL PINS OMITTED FOR CLARITY
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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相关代理商/技术参数 |
参数描述 |
|---|---|
| AD7819YRZ | 制造商:Analog Devices 功能描述:IC 8-BIT ADC ((NW)) 制造商:Analog Devices 功能描述:IC, ADC, 8BIT, 200KSPS, SOIC-16 |
| AD7819YRZ | 制造商:Analog Devices 功能描述:IC, ADC, 8BIT, 200KSPS, 16SOIC |
| AD7819YRZ-REEL | 功能描述:IC ADC 8BIT SAMPLING PAR 16SOIC RoHS:是 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:- 标准包装:2,500 系列:- 位数:16 采样率（每秒）:15 数据接口:MICROWIRE?，串行，SPI? 转换器数目:1 功率耗散（最大）:480µW 电压电源:单电源 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:38-WFQFN 裸露焊盘 供应商设备封装:38-QFN（5x7） 包装:带卷 (TR) 输入数目和类型:16 个单端，双极；8 个差分，双极 配用:DC1011A-C-ND - BOARD DELTA SIGMA ADC LTC2494 |
| AD7819YRZ-REEL7 | 功能描述:IC ADC 8BIT SAMPLING PAR 16SOIC RoHS:是 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:- 标准包装:2,500 系列:- 位数:16 采样率（每秒）:15 数据接口:MICROWIRE?，串行，SPI? 转换器数目:1 功率耗散（最大）:480µW 电压电源:单电源 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:38-WFQFN 裸露焊盘 供应商设备封装:38-QFN（5x7） 包装:带卷 (TR) 输入数目和类型:16 个单端，双极；8 个差分，双极 配用:DC1011A-C-ND - BOARD DELTA SIGMA ADC LTC2494 |
| AD781AN | 制造商:Analog Devices 功能描述:Sample and Hold 1-CH 0.7us 8-Pin PDIP 制造商:Analog Devices 功能描述:SEMICONDUCTORSLINEAR |
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