參數資料
型號: UPD78F9512GR-JJG-A
廠商: Renesas Electronics America
文件頁數: 67/175頁
文件大?。?/td> 0K
描述: MCU 8BIT SGL CHIP 16PIN
標準包裝: 400
系列: 78K0S/Kx1+
核心處理器: 78K0S
芯體尺寸: 8-位
速度: 10MHz
外圍設備: LVD,POR,PWM,WDT
輸入/輸出數: 13
程序存儲器容量: 4KB(4K x 8)
程序存儲器類型: 閃存
RAM 容量: 128 x 8
電壓 - 電源 (Vcc/Vdd): 2 V ~ 5.5 V
振蕩器型: 內部
工作溫度: -40°C ~ 85°C
封裝/外殼: 16-SSOP(0.173",4.40mm 寬)
包裝: 托盤
User’s Manual U16994EJ6V0UD
157
CHAPTER 9 A/D CONVERTER (
μPD78F921x ONLY)
9.1
Functions of A/D Converter
The A/D converter converts an analog input signal into a digital value, and consists of up to four channels (ANI0 to
ANI3) with a resolution of 10 bits.
The A/D converter has the following function.
10-bit resolution A/D conversion
10-bit resolution A/D conversion is carried out repeatedly for one channel selected from analog inputs ANI0 to
ANI3. Each time an A/D conversion operation ends, an interrupt request (INTAD) is generated.
Figure 9-1 shows the timing of sampling and A/D conversion, and Table 9-1 shows the sampling time and A/D
conversion time.
Figure 9-1. Timing of A/D Converter Sampling and A/D Conversion
ADCS
Conversion time
Sampling
time
Sampling
timing
INTAD
ADCS
← 1 or ADS rewrite
Sampling
time
Note
Note 2 or 3 clocks are required from the ADCS rising to sampling start.
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