Datasheet

78K0/Kx2-L CHAPTER 12 A/D CONVERTER
R01UH0028EJ0400 Rev.4.00 401
Sep 27, 2010
CHAPTER 12 A/D CONVERTER
78K0/KY2-L
(
μ PD78F055x)
78K0/KA2-L
( μ PD78F056x)
78K0/KB2-L
( μ PD78F057x)
78K0/KC2-L
( μ PD78F058x)
Item
16 Pins 20 Pins 25 Pins 32 Pins 30 Pins 40 Pins 44 Pins 48 Pins
10-bit A/D
converter
4 ch 6 ch 7 ch 11 ch 7 ch 10 ch 11 ch 11 ch
12.1 Function of A/D Converter
The A/D converter converts an analog input signal into a digital value, and consists of up to 11 channels (ANI0 to
ANI10) with a resolution of 10 bits.
In products with operational amplifier, ANI1 function alternately as operational amplifier 0 output (AMP0OUT) and ANI9
function alternately as operational amplifier 1 output (AMP1OUT). This enables using operational amplifiers 0 and 1
output or PGA output as an analog input source.
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 ANI10,
operational amplifiers 0 and 1 output, and PGA output. Each time an A/D conversion operation ends, an interrupt
request (INTAD) is generated.
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