SYNPWM datasheet(33/57 Pages) FEELING

33 / 57 page

FM8P73B

Web site: http://www.feeling-tech.com.tw

Rev1.0 Nov 20, 2013

P.33/FM8P73B

FEELING

TECHNOLOGY

2.7.3

ADC conversion completion interrupt

When the A/D conversion is completed, the flag bit ADCIF (INTFLAG <6>) will be set. And the ADCIF bit can be

cleared by software.

This interrupt can be disabled by clearing ADCIE bit (INTEN<6>).

2.8

Analog to Digital Converter (ADC)

This analog to digital converter has 11 channels 10bits (8+2) resolution. The ADC is controlled by three control

Example 2.8: Analog to Digital Conversion (Channel0 AD conversion)

Address

Code

#include

<8P73B.ASH>

…

BTRSC

ADCON1,ADCEN_B

n+1

GOTO

$-1

;Make Sure no ADC is processing

n+2

MOVIA

0xBF

n+3

MOVAR

INTFLAG

;Clear ADCIF flag(Note)

n+4

MOVIA

0x00

n+5

MOVAR

ADCON1

;Select ADC Channel 0 (IOA0) conversion

n+6

MOVIA

0x03

n+7

MOVAR

ADCON2

;Set AD conversion rate: System clock / 128

n+8

MOVIA

0x01

n+9

MOVAR

ADCON3

;Set AN0 analog input

n+10

BSR

ADCON1,ADCEN_B

;ADC conversion start

n+11

BTRSS

INTFLAG,ADCIF_B

n+12

GOTO

$-1

;Wait AD end of conversion

n+13

MOVR

ADDATH,A

;Read ADC high byte data

n+14

MOVAR

…

n+15

MOVR

ADDATL,A

;Read ADC low byte data

n+16

MOVAR

…

Note : BCR instruction is not recommended for Clear interrupt flag (INTFLAG register).

2.9

Oscillator Configurations

FM8P73B can be operated in five different combinations of oscillator modes. Users can program configuration

word (FOSC) to select the appropriate modes. The five different system clock modes are combination of the

following oscillators:



LF: Low Frequency Crystal Oscillator



XT: Crystal/Resonator Oscillator



HF: High Frequency Crystal/Resonator Oscillator



ERC: External Resistor/ Voltage Controlled Oscillator



IRC: Internal Resistor/Capacitor Oscillator

In LF, XT, or HF modes, a crystal or ceramic resonator in connected to the OSCI and OSCO pins to establish

oscillation. When in LF, XT, or HF modes, the devices can have an external clock source drive the OSCI pin.

The ERC device option offers additional cost savings for timing insensitive applications. The RC oscillator

frequency is a function of the supply voltage, the resistor (Rext) and capacitor (Cext), the operating temperature,

and the process parameter.

The IRC option offers largest cost savings for timing insensitive applications.

SYNPWM Datasheet(PDF) 33 Page - Feeling Technology Corp.

SYNPWM Datasheet(HTML) 33 Page - Feeling Technology Corp.

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57

Datasheet Download

Link URL