PIC12F509-I/P Microchip Technology, PIC12F509-I/P Datasheet - Page 28
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PIC12F509-I/P
Manufacturer Part Number
PIC12F509-I/P
Description
IC MCU FLASH 1KX12 8DIP
Manufacturer
Microchip Technology
Series
PIC® 12Fr
Datasheets
1.PIC12F509T-ISN.pdf
(110 pages)
2.PIC12F509T-ISN.pdf
(4 pages)
3.PIC12F509T-ISN.pdf
(20 pages)
4.PIC12F509-EMC.pdf
(106 pages)
Specifications of PIC12F509-I/P
Program Memory Type
FLASH
Program Memory Size
1.5KB (1K x 12)
Package / Case
8-DIP (0.300", 7.62mm)
Core Processor
PIC
Core Size
8-Bit
Speed
4MHz
Peripherals
POR, WDT
Number Of I /o
5
Ram Size
41 x 8
Voltage - Supply (vcc/vdd)
2 V ~ 5.5 V
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Processor Series
PIC12F
Core
PIC
Data Bus Width
8 bit
Data Ram Size
41 B
Interface Type
RS- 232/USB
Maximum Clock Frequency
4 MHz
Number Of Programmable I/os
6
Number Of Timers
1
Operating Supply Voltage
2 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
PG164130, DV164035, DV244005, DV164005, PG164120, ICE2000, DV164101, DM163014, DV164120, DM163029
Minimum Operating Temperature
- 40 C
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With
AC162059 - HEADER INTRFC MPLAB ICD2 8/14PINDM163029 - BOARD PICDEM FOR MECHATRONICSDVA12XP080 - ADAPTER DEVICE FOR MPLAB-ICEAC124001 - MODULE SKT PROMATEII 8DIP/SOIC
Eeprom Size
-
Data Converters
-
Connectivity
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
PIC12F509-I/P
Manufacturer:
MICROCHIP/微芯
Quantity:
20 000
4.9
The INDF register is not a physical register.
whose address is contained in the FSR register (FSR
is a pointer). This is indirect addressing.
4.9.1
• Register file 07 contains the value 10h
• Register file 08 contains the value 0Ah
• Load the value 07 into the FSR register
• A read of the INDF register will return the value
• Increment the value of the FSR register by one
• A read of the INDR register now will return the
Reading INDF itself indirectly (FSR = 0) will produce
00h. Writing to the INDF register indirectly results in a
no operation (although Status bits may be affected).
A simple program to clear RAM locations 10h-1Fh
using indirect addressing is shown in Example 4-1.
FIGURE 4-7:
Addressing INDF actually addresses the register
PIC12F508/509/16F505
DS41236E-page 28
of 10h
(FSR = 08)
value of 0Ah.
Note 1: For register map detail, see Section 4.3 “Data Memory Organization”.
Indirect Data Addressing: INDF
and FSR Registers
INDIRECT ADDRESSING
2: PIC12F509.
Bank Select
(FSR)
6
DIRECT/INDIRECT ADDRESSING (PIC12F508/509)
5
Direct Addressing
Location Select
Data
Memory
4
(opcode)
(1)
00h
0Fh
10h
0
1Fh
Bank 0
00
3Fh
Bank 1
Addresses
map back to
addresses
in Bank 0.
EXAMPLE 4-1:
The FSR is a 5-bit wide register. It is used in conjunction
with the INDF register to indirectly address the data
memory area.
The FSR<4:0> bits are used to select data memory
addresses 00h to 1Fh.
PIC12F508 – Does not use banking. FSR <7:5> are
unimplemented and read as ‘1’s.
PIC12F509 – Uses FSR<5>. Selects between bank 0
and bank 1. FSR<7:6> are unimplemented, read as
‘1’.
PIC16F505 – Uses FSR<6:5>. Selects from bank 0 to
bank 3. FSR<7> is unimplemented, read as ‘1’.
01
NEXT
CONTINUE
(2)
MOVLW
MOVWF
CLRF
INCF
BTFSC
GOTO
:
:
0x10
FSR
INDF
FSR,F
FSR,4
NEXT
HOW TO CLEAR RAM
USING INDIRECT
ADDRESSING
6
© 2009 Microchip Technology Inc.
Indirect Addressing
Bank
5
;initialize pointer
;to RAM
;clear INDF
;register
;inc pointer
;all done?
;NO, clear next
;YES, continue
4
Location Select
(FSR)
0