UPD78F9222MC(T)-5A4-A NEC, UPD78F9222MC(T)-5A4-A Datasheet - Page 159

• Manufacturer Part Number: UPD78F9222MC(T)-5A4-A
• Description: 8BIT MCU, 4K FLASH, 256B RAM, 78F9222
• Manufacturer: NEC

Specifications of UPD78F9222MC(T)-5A4-A

• Controller Family/series: UPD78
• No. Of I/o's: 17
• Ram Memory Size: 256Byte
• Cpu Speed: 10MHz
• No. Of Timers: 4
• No. Of: RoHS Compliant
• Core Size: 8bit
• Program Memory Size: 4KB
• Oscillator Type: External, Internal

10.1 Functions of A/D Converter
ANI3) with a resolution of 10 bits.
conversion time.
The A/D converter converts an analog input signal into a digital value, and consists of up to four channels (ANI0 to
The A/D converter has the following function.
• 10-bit resolution A/D conversion
Figure 10-1 shows the timing of sampling and A/D conversion, and Table 10-1 shows the sampling time and A/D
Note 2 or 3 clocks are required from the ADCS rising to sampling start.
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.
Sampling
INTAD
ADCS
timing
Figure 10-1. Timing of A/D Converter Sampling and A/D Conversion
ADCS ← 1 or ADS rewrite
Note
CHAPTER 10 A/D CONVERTER
Sampling
time
User’s Manual U16898EJ5V0UD
Conversion time
Sampling
Conversion time
time
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