PIC12F519-E/SN Microchip Technology, PIC12F519-E/SN Datasheet - Page 22

• Manufacturer Part Number: PIC12F519-E/SN
• Description: 1.5KB Flash Program, 64B Flash Data, 8MHz Internal Oscillator 8 SOIC 3.90mm (.15
• Manufacturer: Microchip Technology
• Series: PIC® 12Fr

Specifications of PIC12F519-E/SN

• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 8MHz
• Peripherals: POR, WDT
• Number Of I /o: 5
• Program Memory Size: 1.5KB (1K x 12)
• Program Memory Type: FLASH
• Ram Size: 41 x 8
• Voltage - Supply (vcc/vdd): 2 V ~ 5.5 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 8-SOIC (3.9mm Width)
• Core: PIC
• Processor Series: PIC12F
• Data Bus Width: 8 bit
• Maximum Clock Frequency: 8 MHz
• Data Ram Size: 41 B
• Number Of Programmable I/os: 6
• Number Of Timers: 1
• Mounting Style: SMD/SMT
• Height: 1.25 mm
• Interface Type: USB
• Length: 4.9 mm
• Maximum Operating Temperature: + 125 C
• Minimum Operating Temperature: - 40 C
• Supply Voltage (max): 5.5 V
• Supply Voltage (min): 2 V
• Width: 3.9 mm
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Data Converters: -
• Connectivity: -
• Lead Free Status / Rohs Status: Details

PIC12F519
4.8
The INDF register is not a physical register.
Addressing INDF actually addresses the register
whose address is contained in the FSR register (FSR
is a pointer). This is indirect addressing.
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).
The FSR is an 8-bit wide register. It is used in conjunc-
tion 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.
FSR<5> is used to select between banks (0 = Bank 0,
1 = Bank 1).
FSR<7:6> are unimplemented and read as ‘11’.
FIGURE 4-4:
DS41319B-page 20
Indirect Data Addressing: INDF
and FSR Registers
Bank Select
(FSR)
5
Direct Addressing
DIRECT/INDIRECT ADDRESSING
Location Select
Data
Memory
4
(opcode)
00h
0Fh
10h
0
1Fh
Bank 0
0
3Fh
Bank 1
1
EXAMPLE 4-1:
NEXT
CONTINUE
MOVLW
MOVWF
CLRF
INCF
BTFSC
GOTO
:
:
Indirect Addressing
0x10
FSR
INDF
FSR,F
FSR,4
NEXT
Bank
5
HOW TO CLEAR RAM
USING INDIRECT
ADDRESSING
© 2008 Microchip Technology Inc.
4
;initialize pointer
;to RAM
;clear INDF
;register
;inc pointer
;all done?
;NO, clear next
;YES, continue
Location Select
(FSR)
0