UPD78F0537DGA(T)-9EV-A NEC, UPD78F0537DGA(T)-9EV-A Datasheet - Page 312

• Manufacturer Part Number: UPD78F0537DGA(T)-9EV-A
• Description: 8BIT MCU, 128K FLASH, 7KB RAM, SMD
• Manufacturer: NEC

Specifications of UPD78F0537DGA(T)-9EV-A

• Controller Family/series: UPD78
• No. Of I/o's: 55
• Ram Memory Size: 7KB
• Cpu Speed: 20MHz
• No. Of Timers: 8
• No. Of Pwm: RoHS Compliant
• Core Size: 8bit
• Program Memory Size: 128KB
• Oscillator Type: External, Internal

13.1 Function of A/D Converter
ANI7) with a resolution of 10 bits.
312
ANI0/P20
ANI1/P21
ANI2/P22
ANI3/P23
ANI4/P24
ANI5/P25
ANI6/P26
ANI7/P27
The A/D converter converts an analog input signal into a digital value, and consists of up to eight channels (ANI0 to
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 analog input channel selected from ANI0 to
ANI7. Each time an A/D conversion operation ends, an interrupt request (INTAD) is generated.
ADS2
ADS1
3
Analog input channel
specification register (ADS)
ADS0
ADPC3 ADPC2 ADPC1 ADPC0
Figure 13-1. Block Diagram of A/D Converter
4
A/D port configuration
register (ADPC)
CHAPTER 13 A/D CONVERTER
User’s Manual U17260EJ6V0UD
Sample & hold circuit
ADCS
Internal bus
FR2
AV
SS
FR1
FR0
5
A/D converter mode
register (ADM)
LV1
LV0
Controller
ADCE
A/D conversion result
Successive
approximation
register (SAR)
register (ADCR)
Voltage comparator
ADCS bit
INTAD
AV
AV
REF
SS