PIC16C781-I/P Microchip Technology, PIC16C781-I/P Datasheet - Page 99

• Manufacturer Part Number: PIC16C781-I/P
• Description: IC MCU OTP 1KX14 W/AD COMP 20DIP
• Manufacturer: Microchip Technology
• Series: PIC® 16Cr

Specifications of PIC16C781-I/P

• Core Size: 8-Bit
• Program Memory Size: 1.75KB (1K x 14)
• Core Processor: PIC
• Speed: 20MHz
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 13
• Program Memory Type: OTP
• Ram Size: 128 x 8
• Voltage - Supply (vcc/vdd): 4 V ~ 5.5 V
• Data Converters: A/D 8x8b; D/A 1x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 20-DIP (0.300", 7.62mm)
• Controller Family/series: PIC16C
• No. Of I/o's: 16
• Ram Memory Size: 128Byte
• Cpu Speed: 20MHz
• No. Of Timers: 3
• Processor Series: PIC16C
• Core: PIC
• Data Bus Width: 8 bit
• Data Ram Size: 128 B
• Maximum Clock Frequency: 20 MHz
• Number Of Programmable I/os: 16
• Number Of Timers: 2
• Operating Supply Voltage: 2.5 V to 5.5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: Through Hole
• 3rd Party Development Tools: 52715-96, 52716-328, 52717-734
• Development Tools By Supplier: ICE2000, DM163022
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 8 bit
• On-chip Dac: 8 bit, 1 Channel
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: ISPICR1 - ADAPTER IN-CIRCUIT PROGRAMMINGDVA16XP202 - ADAPTER DEVICE PIC16C781/782DM163012 - BOARD DEMO PICDEM FOR 16C781/782AC164028 - MODULE SKT PROMATEII 20SOIC/DIP
• Eeprom Size: -
• Connectivity: -
• Lead Free Status / Rohs Status: Details
• Other names: PIC16C781I/P

EXAMPLE 12-3:
;*
;*
;*
;*
;*
;*
;*
;*
;********************************************
;*
WC_INT_SRV_R
;*** CLEAR C1 INTERRUPT
;*** CLEAR C2 INTERRUPT
TXT_C2_INT
USER_ISR
;*** USER INTERRUPT ROUTING
;*
2001 Microchip Technology Inc.
Example of Low Power Window Comparator C1
This code block will configure Comparator
C2 invert, input on AN4, and external
References
Interrupt service routine included
BANKSEL
BSF
BSF
BSF
BSF
BSF
BSF
BANKSEL
MOVLW
MOVWF
MOVLW
MOVWF
BANKSEL
BCF
BSF
BSF
BSF
BSF
WINDOW COMPARATOR ISR with context save
MOVWF
SWAPF
MOVWF
BANKSEL
MOVLW
ANDWF
MOVWF
BTFSS
GOTO
BANKSEL
MOVF
BANKSEL
BCF
BTFSS
GOTO
BANKSEL
MOVF
BANKSEL
BCF
SWAPF
MOVWF
SWAPF
SWAPF
RETFIE
C1 and C2 for slow speed, C1 non invert,
TRISA
TRISA,2
TRISA,3
TRISB,0
ANSEL,AN2
ANSEL,AN3
ANSEL,AN4
CM1CON0
B’10000000’ ; C1: no output
CM1CON0
B’10010000’ ; C2: no output
CM2CON0
PIE1
INTCON,GIE ; Disable Int
PIE1,C1IE
PIE1,C2IE
INTCON,PEIE
INTCON,GIE ; Enabl Global Ints
W_SAVE
STATUS,W
STATUS_SAV
PIR1
B’00110000’ ; Save Int
PIR1,W
WIN_INT
WIN_INT,C1IF; C1 Int ?
TST_C2_INT
CM1CON0
CM1CON0,F
PIR1
PIR1,C1IF
WIN_INT,C2IF; C2 int?
USER_ISR
CM2CON0
CM2CON0,F
PIR1
PIR1,C1IF
STATUS_SAVE,W; Restore W &
STATUS
W_SAVE,F
W_SAVE,W
WINDOW COMPARATOR
; Select Bank 1
; RA2 input
; RA3 input
; Set RB0
; RA2 analog
; RA3 analog
; RB4 analog
; Select Bank 2
; VREF1, AN4
; invert,VREF1,AN4
; Select Bank 1
; Enabl C1&C2 Ints
; Save W & STATUS
; Select Bank 0
; Select Bank 2
; Clear C2 mismatch
; Select Bank 0
; Clear C2 Int
; Select Bank 2
; Clear C2 mismatch
; Select Bank 0
; Clear C2 int
; STATUS
; Return
Preliminary
PIC16C781/782
DS41171A-page 97