UPD78F0890GK(A)-GAJ-AX NEC, UPD78F0890GK(A)-GAJ-AX Datasheet - Page 285

• Manufacturer Part Number: UPD78F0890GK(A)-GAJ-AX
• Description: 8BIT MCU, 128K FLASH, 7K RAM, LQFP
• Manufacturer: NEC

Specifications of UPD78F0890GK(A)-GAJ-AX

• Controller Family/series: UPD78F
• No. Of I/o's: 55
• Ram Memory Size: 7KB
• Cpu Speed: 20MHz
• No. Of Timers: 10
• No. Of Pwm: RoHS Compliant
• Core Size: 8bit
• Program Memory Size: 128KB
• Oscillator Type: External, Internal

13.1 Function of A/D Converter
to ANI11) with a resolution of 10 bits.
P92/ANI10
P93/ANI11
P80/ANI0
P81/ANI1
P82/ANI2
P83/ANI3
P84/ANI4
P85/ANI5
P86/ANI6
P87/ANI7
P90/ANI8
P91/ANI9
The A/D converter converts an analog input signal into a digital value, and consists of up to twelve channels (ANI0
The A/D converter has the following function.
• 10-bit resolution A/D conversion
ADS3
10-bit resolution A/D conversion is carried out repeatedly for one channel selected from analog inputs ANI0 to
ANI11. Each time an A/D conversion operation ends, an interrupt request (INTAD) is generated.
ADS2
ADS1
4
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 U17554EJ4V0UD
Sample & hold circuit
ADCS
Internal bus
FR2
AV
SS
FR1
FR0
5
A/D converter mode
register (ADM)
LV1
LV0
ADCE
Controller
A/D conversion result
Successive
approximation
register (SAR)
register (ADCR)
Voltage comparator
ADCS bit
INTAD
AV
AV
285
REF
SS