PIC12F617T-I/MF Microchip Technology, PIC12F617T-I/MF Datasheet - Page 34
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PIC12F617T-I/MF
Manufacturer Part Number
PIC12F617T-I/MF
Description
3.5KB Self Read/Write Flash, 128B RAM, 6 I/O, 8MHz Internal Oscillator 8 DFN 3x3
Manufacturer
Microchip Technology
Series
PIC® 12Fr
Datasheets
1.PIC12F609T-ISN.pdf
(212 pages)
2.PIC12F609T-ISN.pdf
(8 pages)
3.PIC12F617-IP.pdf
(4 pages)
Specifications of PIC12F617T-I/MF
Core Processor
PIC
Core Size
8-Bit
Speed
20MHz
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
5
Program Memory Size
3.5KB (2K x 14)
Program Memory Type
FLASH
Ram Size
128 x 8
Voltage - Supply (vcc/vdd)
2 V ~ 5.5 V
Data Converters
A/D 4x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
8-DFN
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Connectivity
-
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
PIC12F617T-I/MF
Manufacturer:
MICROCHIP
Quantity:
1 200
- Current page: 34 of 212
- Download datasheet (2Mb)
PIC12F609/615/617/12HV609/615
An example of the complete four-word write sequence
is shown in Example 3-2. The initial address is loaded
into the PMADRH and PMADRL register pair; the eight
words of data are loaded using indirect addressing.
EXAMPLE 3-2:
DS41302D-page 34
LOOP
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
; This write routine assumes the following:
;
;
;
;
BANKSEL
MOVF
MOVWF
MOVF
MOVWF
MOVF
MOVWF
MOVF
MOVWF
INCF
MOVF
MOVWF
INCF
BANKSEL
BSF
BCF
BTFSC
GOTO
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;
MOVLW
MOVWF
MOVLW
MOVWF
BSF
NOP
NOP
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
BCF
BSF
BANKSEL
MOVF
INCF
ANDLW
SUBLW
BTFSS
GOTO
A valid starting address (the least significant bits = '00')
is loaded in ADDRH:ADDRL
ADDRH, ADDRL and DATADDR are all located in data memory
WRITING TO FLASH PROGRAM MEMORY
PMADRH
ADDRH,W
PMADRH
ADDRL,W
PMADRL
DATAADDR,W
FSR
INDF,W
PMDATL
FSR,F
INDF,W
PMDATH
FSR,F
PMCON1
PMCON1,WREN ; Enable writes
INTCON,GIE
INTCON,GIE
$-2
55h
PMCON2
0AAh
PMCON2
PMCON1,WR
PMCON1,WREN ; Disable writes
INTCON,GIE
PMADRL
PMADRL, W
PMADRL,F
0x03
0x03
STATUS,Z
LOOP
; Load initial address
;
;
;
; Load initial data address
;
; Load first data byte into lower
;
; Next byte
; Load second data byte into upper
;
;
; Disable interrupts (if using)
; See AN576
; Start of required write sequence:
; Write 55h
;
; Write 0AAh
; Set WR bit to begin write
; Required to transfer data to the buffer
; registers
; Enable interrupts (comment out if not using interrupts)
; Increment address
; Indicates when sixteen words have been programmed
;
;
;
;
; Exit on a match,
; Continue if more data needs to be written
Required Sequence
0x0F = 16 words
0x0B = 12 words
0x07 = 8 words
0x03 = 4 words
2010 Microchip Technology Inc.
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