參數(shù)資料
型號: UPD78322GJ-XXX-5BJ
元件分類: 微控制器/微處理器
英文描述: 16-BIT, MROM, 16 MHz, MICROCONTROLLER, PQFP74
封裝: 20 X 20 MM, PLASTIC, QFP-74
文件頁數(shù): 35/90頁
文件大小: 649K
代理商: UPD78322GJ-XXX-5BJ
38
PD78320, 78322
3.8
A/D CONVERTER
The
PD78322 incorporates a high-speed, high-resolution 10-bit analog/digital (A/D) converter. This A/D converter is
equipped with eight analog inputs (AN0 to AN7) and A/D conversion result register (ADCR) which holds the conversion
results.
Upon termination of conversion, the interrupt which can start the macro service is generated.
Figure 3-5. A/D Converter Block Diagram
AN0
AN1
AN2
AN3
AN4
AN5
AN6
AN7
Input
Circuit
ADM (8)
Internal Bus
8
Sample & Hold Circuit
Comparator
SAR (10)
D/A Converter
ADCR (10)
10
Internal Bus
AVREF
AVSS
10
3.9
SERIAL INTERFACE
The
PD78322 is equipped with the following two independent channels for the serial interface function.
Asynchronous serial interface
Clocked serial interface
3-wire serial I/O mode
Serial bus interface mode (SBI mode)
Since the
PD78322 incorporates a baud rate generator, it can set any serial transfer rate irrespective of the operating
frequency. The baud rate generator functions for the 2-channel serial interface in common.
The serial transfer rate can be selected from 75 bps to 19.2 Kbps by setting the mode register.
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