PIC16C781-I/P Microchip Technology, PIC16C781-I/P Datasheet - Page 51

• 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

4.3
To read a program memory location, the user must
write 2 bytes of the address to the PMADRH and
PMADRL
(PMCON1<0>). Once the read control bit is set, the
Program Memory Read (PMR) controller uses the sec-
ond instruction cycle after to read the data. This causes
the second instruction immediately following the “BSF
PMCON1,RD” instruction to be ignored. The data is
available, in the very next cycle, in the PMDATH and
PMDATL registers. Therefore, it can be read as 2 bytes
EXAMPLE 4-1:
;* This code block will read 1 word of program
;* memory at the memory address:
;* PROG_ADDR_HI : PROG_ADDR_LO
;*
;*
2001 Microchip Technology Inc.
BANKSEL
MOVLW
MOVWF
MOVLW
MOVWF
BANKSEL
CLEAR GIE
BCF
BSF
NOP
BSF
MOVF
MOVWF
MOVF
MOVWF
data will be returned in the variables;
NOP
PROG_DATA_HI, PROG_DATA_LO
Reading the EPROM Program
Memory
registers,
PMADRL
PROG_ADDR_LO
PMADRL
PROG_ADDR_HI
PMADRH
PMCON1
INTCON, GIE
PMCON1,RD
INTCON, GIE
PMDATL,W
PROG_DATA_LO
PMDATH,W
PROG_DATA_HI
OTP PROGRAM MEMORY READ
then
set
; Select Bank 2
;
; Store LSB of address
;
; Store MSB of address
; Select Bank 3
; Turn off INTs
; Initiate read
; Executed (Fig 4-1)
; Ignored (Fig 4-1)
; Turn on INTs
; Get LSB of word
; Get MSB of word
control
bit
Preliminary
RD
in the following instructions. PMDATH and PMDATL
registers hold this value until another read or until
RESET.
Note 1: Interrupts must be disabled during the
2: The following instructions should not be
time from setting PMCON1<0> (RD) to
the second instruction thereafter.
used following the start of a PMR read
cycle: CALL, GOTO, BTFSS, BTFSC,
RETFIE, RETURN, SLEEP.
PIC16C781/782
DS41171A-page 49