參數(shù)資料
型號: DAC811AH
英文描述: Microprocessor-Compatible 12-BIT DIGITAL-TO-ANALOG CONVERTER
中文描述: 微處理器兼容的12位數(shù)字到模擬轉(zhuǎn)換器
文件頁數(shù): 8/9頁
文件大?。?/td> 96K
代理商: DAC811AH
DAC811
8
FIGURE 10. Right-Justified Data Bus Interface.
FIGURE 11. Left-Justified Data Bus Interface.
8-BIT INTERFACE
The control logic of DAC811 permits interfacing to right-
justified data formats, as illustrated in Figure 9. When a
12-bit D/A converter is loaded from an 8-bit bus, two bytes
of data are required. Figures 10 and 11 show an addressing
scheme for right-justified and left-justified data respectively.
The base address is decoded from the high-order address
bits. A
0
and A
1
address the appropriate latches. Note that
adjacent addresses are used. For the right-justified case,
X10
16
loads the 8LSBs, and X01
16
loads the 4MSBs and
simultaneously transfers input latch data to the D/A latch.
Addresses X00
16
and X11
16
are not used.
Left-justified data is handled in a similar manner, shown in
Figure 11. The DAC811 still occupies two adjacent loca-
tions in the microcomputer's memory map.
FIGURE 8. Addressing and Control for 4-Bit Microcom-
puter Interface.
FIGURE 9. 12-Bit Data Format for 8-Bit Systems.
D0
D4
D8
D1
D5
D9
D2
D6
D10
D3
D7
D11
16
14
10
17
13
9
18
12
8
19
11
7
DB0
DB1
DB2
DB3
WR
A
A
A
1
0
M
D
Base
Address
Decoder
A
N
2
2
3
4
5
6
WR
LDAC
N
N
N
1/2
74LS139
A
B
C
7
6
5
4
1
3
2
CS
(Chip
Select)
A
A
1
0
EN
Y
Y
Y
Y
3
2
1
0
X
X
X
X
D11 D10
D9 D8
D7 D6 D5 D4 D3 D2 D1 D0
a. Right-Justified
D11 D10
D9 D8 D7 D6 D5 D4
D3 D2 D1 D0
b. Left-Justified
X
X
X
X
D0
D8
D1
D9
D2
D10
D3
D11
D4
D5
D6
D7
16
10
17
9
18
8
19
7
14
13
12
11
DB0
DB1
DB2
DB3
DB4
DB5
DB6
DB7
WR
A
A
1
0
M
D
Base
Address
Decoder
A
A
15
2
2
3
4
5
6
WR
LDAC
N
N
N
A
B
C
CS
D4
D5
D6
D7
D8
D0
D9
D1
D10
D2
D11
D3
14
13
12
11
10
16
9
17
8
18
7
19
DB0
DB1
DB2
DB3
DB4
DB5
DB6
DB7
WR
A
A
1
0
M
D
Base
Address
Decoder
A
A
15
2
2
3
4
5
6
WR
LDAC
N
N
N
A
B
C
CS
相關PDF資料
PDF描述
DAC811BH Microprocessor-Compatible 12-BIT DIGITAL-TO-ANALOG CONVERTER
DAC811JP Microprocessor-Compatible 12-BIT DIGITAL-TO-ANALOG CONVERTER
DAC811JU Microprocessor-Compatible 12-BIT DIGITAL-TO-ANALOG CONVERTER
DAC811KP Microprocessor-Compatible 12-BIT DIGITAL-TO-ANALOG CONVERTER
DAC811KU Microprocessor-Compatible 12-BIT DIGITAL-TO-ANALOG CONVERTER
相關代理商/技術參數(shù)
參數(shù)描述
DAC811AH 制造商:Texas Instruments 功能描述:D/A Converter (D-A) IC
DAC811BH 功能描述:數(shù)模轉(zhuǎn)換器- DAC Mcrprcsr-Compatible 12-Bit RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換器數(shù)量:1 DAC 輸出端數(shù)量:1 轉(zhuǎn)換速率:2 MSPs 分辨率:16 bit 接口類型:QSPI, SPI, Serial (3-Wire, Microwire) 穩(wěn)定時間:1 us 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-14 封裝:Tube
DAC811JP 功能描述:數(shù)模轉(zhuǎn)換器- DAC Mcrprcsr-Compatible 12-Bit RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換器數(shù)量:1 DAC 輸出端數(shù)量:1 轉(zhuǎn)換速率:2 MSPs 分辨率:16 bit 接口類型:QSPI, SPI, Serial (3-Wire, Microwire) 穩(wěn)定時間:1 us 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-14 封裝:Tube
DAC811JPG4 功能描述:數(shù)模轉(zhuǎn)換器- DAC Mcrprcsr-Compatible 12-Bit RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換器數(shù)量:1 DAC 輸出端數(shù)量:1 轉(zhuǎn)換速率:2 MSPs 分辨率:16 bit 接口類型:QSPI, SPI, Serial (3-Wire, Microwire) 穩(wěn)定時間:1 us 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-14 封裝:Tube
DAC811JU 功能描述:數(shù)模轉(zhuǎn)換器- DAC Mcrprcsr-Compatible 12-Bit RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換器數(shù)量:1 DAC 輸出端數(shù)量:1 轉(zhuǎn)換速率:2 MSPs 分辨率:16 bit 接口類型:QSPI, SPI, Serial (3-Wire, Microwire) 穩(wěn)定時間:1 us 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-14 封裝:Tube