參數(shù)資料
型號(hào)： ADC0804
廠商： National Semiconductor Corporation
元件分類： 串行ADC
英文描述： 8-BitμP Compatible A/D Converters(8位μP 兼容A/D轉(zhuǎn)換器)
中文描述： 8BitμP兼容的A / D轉(zhuǎn)換器（8位微處理器兼容的A / D轉(zhuǎn)換器）
文件頁(yè)數(shù)： 28/41頁(yè)
文件大?。?/td> 1118K
代理商： ADC0804
Functional Description
(Continued)
4.2 Interfacing the Z-80
The Z-80 control bus is slightly different from that of the
8080. General RD and WR strobes are provided and sepa-
rate memory request, MREQ, and I/O request, IORQ, sig-
nals are used which have to be combined with the general-
ized strobes to provide the equivalent 8080 signals. An
advantage of operating the A/D in I/O space with the Z-80 is
that the CPU will automatically insert one wait state (the RD
and WR strobes are extended one clock period) to allow
more time for the I/O devices to respond. Logic to map the
A/D in I/O space is shown in Figure 14
Additional I/O advantages exist as software DMA routines
are available and use can be made of the output data trans-
fer which exists on the upper 8 address lines (A8 toA15) dur-
DS005671-21
FIGURE 13. INS8048 Interface
SAMPLE PROGRAM FOR
Figure 13
INS8048 INTERFACE
DS005671-A0
DS005671-23
FIGURE 14. Mapping the A/D as an I/O Device
for Use with the Z-80 CPU
A
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ADC0804-1LCN 制造商:NXP Semiconductors 功能描述:Analog Digital Converter, Single, 8 Bit, 20 Pin, DIP
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