EKTF6708 datasheet(48/158 Pages) EMC

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eKTF6708

8-Bit Microcontroller



IC Product Specification (V1.2) 03.12.2020

(This specification is subject to change without prior notice)

6.1.48 Bank 0 R3F: ADCR2 (ADC Control Register 2)

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

ADLPFEN

ADIM

ADCMS

VPIS1

VPIS0

VREFP1

VREFP0

R/W

Bits 7 (ADLPFEN): Low pass filter of ADC for initial voltage reference enable bit.

0: Disable

1: Enable

NOTE

When using internal voltage reference, users need to wait 50us at least the first time to

enable and stabilize the internal voltage reference circuit. After that, users need to wait

500us(Low pass filter stable time) at least then set ADLPFEN enable, whenever switching

voltage references.

Bits 6: Not used, set to "0" all the time.

Bit 5 (ADIM): ADC Interrupt Mode

0: Normal mode. Interrupt occurred after AD conversion is completed.

1: Compare mode. Interrupt occurred when comparison result conforms the

setting of ADCMS bits.

Bit 4 (ADCMS): ADC Comparison Mode Selection.

In compare mode:

0: Interrupt occurred when AD conversion data is greater than data in ADCD

It means when ADD > ADCD, interrupt occurred.

1: Interrupt occurred when AD conversion data is less than data in ADCD

It means when ADD < ADCD, interrupt occurred.

In normal mode:

No effect

Bits 3 ~ 2 (VPIS1~0): Internal Reference Voltage Selection.

VPIS[1:0]

Reference Voltage

4.096 V

3.072 V

2.560 V

2.048 V

Bits 1 ~ 0 (VREFP1~0): Positive Reference Voltage Selection

0: Internal positive reference voltage. The actual voltage is set by VPIS[1:0] bits

1: From VREF pin.

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