參數(shù)資料
型號： EM78458
英文描述： Dual Advanced Synchronous Rectified Buck MOSFET Drivers with Pre-POR OVP; Temperature Range: 0&degC to 70°C; Package: 16-QFN
中文描述： 8位微控制器的通用產(chǎn)品
文件頁數(shù)： 22/57頁
文件大小： 854K
代理商： EM78458
EM78458/459
MASK ROM
This specification is subject to change without prior notice.
2002/03/01
29
Fig. 11 Interrupt Input Circuit
4.7 Analog-To-Digital Converter (ADC)
The analog-to-digital circuitry consists of an 8-bit analog multiplexer, three control registers
(ADCON/R9, AD-CMP-CON/IOCA0, GCON/IOC90), one data register (ADDATA/RA) and an ADC
with 8-bit resolution. The functional block diagram of the ADC is shown in Fig. 12. The analog
reference voltage (Vref) and analog ground are connected via separate input pins.
The ADC module utilizes successive approximation to convert the unknown analog signal into a
digital value. The result is fed to the ADDATA. Input channels are selected by the analog input
multiplexer via the ADCON register Bits ADIS0, ADIS1, and ADIS2.
0
1
2
3
4
5
6
7
OP2
GCON
5
4
3
2
1
0
ADDATA
OP1
DATA BUS
ADC4
ADC3
ADC2
ADC1
ADC5
ADC6
ADC7
ADC8
Vref
Power-Down
Fsco
Internal
RC
4-1
MUX
2
3
4
3
4
ADC
( successive approximation )
3
8-1
Analog
Switch
0
1
0
1
2
AD-CMPCON
RF
AD-CMPCON
ADCON
+
-
Start to Convert
Fig. 12 The Functional Block Diagram of Analog-to-Digital Conversion
相關(guān)PDF資料
PDF描述
EM78459 Dual Advanced Synchronous Rectified Buck MOSFET Drivers with Pre-POR OVP; Temperature Range: -40°C to 85°C; Package: 14-SOIC
EM78450 Dual Advanced Synchronous Rectified Buck MOSFET Drivers with Pre-POR OVP; Temperature Range: 0&degC to 70°C; Package: 16-QFN
EM78612 Dual Advanced Synchronous Rectified Buck MOSFET Drivers with Pre-POR OVP; Temperature Range: -40°C to 85°C; Package: 16-QFN
EM78P451 Dual Advanced Synchronous Rectified Buck MOSFET Drivers with Protection Features; Temperature Range: 0&degC to 70°C; Package: 16-QFN
EM83050 Dual Advanced Synchronous Rectified Buck MOSFET Drivers with Protection Features; Temperature Range: -40°C to 85°C; Package: 16-QFN T&R
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
EM78458AM 制造商:EMC 制造商全稱:ELAN Microelectronics Corp 功能描述:8-Bit Microcontroller with MASK ROM
EM78458AP 制造商:EMC 制造商全稱:ELAN Microelectronics Corp 功能描述:8-Bit Microcontroller with MASK ROM
EM78459 制造商:EMC 制造商全稱:ELAN Microelectronics Corp 功能描述:8-Bit Microcontroller with MASK ROM
EM78459AK 制造商:EMC 制造商全稱:ELAN Microelectronics Corp 功能描述:8-Bit Microcontroller with MASK ROM
EM78459AM 制造商:EMC 制造商全稱:ELAN Microelectronics Corp 功能描述:8-Bit Microcontroller with MASK ROM
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