PIC12F519 Microchip Technology, PIC12F519 Datasheet - Page 16

• Manufacturer Part Number: PIC12F519
• Description: 8-Bit Flash Microcontroller
• Manufacturer: Microchip Technology

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PIC12F519
4.2
Data memory is composed of registers or bytes of
SRAM. Therefore, data memory for a device is speci-
fied by its register file. The register file is divided into
two functional groups: Special Function Registers
(SFR) and General Purpose Registers (GPR).
The Special Function Registers include the TMR0 reg-
ister, the Program Counter (PCL), the STATUS register,
the I/O register (port) and the File Select Register
(FSR). In addition, the EECON, EEDATA and EEADR
registers provide for interface with the Flash data
memory.
The PIC12F519 register file is composed of 10 Special
Function Registers and 41 General Purpose Registers.
4.2.1
The General Purpose Register file is accessed, either
directly or indirectly, through the File Select Register
(FSR). See Section 4.8 “Indirect Data Addressing:
INDF and FSR Registers”.
FIGURE 4-2:
DS41319A-page 14
File Address
Note 1: Not a physical register.
FSR<5>
0Ah
09h
0Fh
1Fh
00h
01h
02h
03h
04h
05h
06h
07h
08h
10h
Data Memory (SRAM and FSRs)
GENERAL PURPOSE REGISTER
FILE
General
Purpose
Registers
General
Purpose
Registers
OSCCAL
STATUS
PORTB
INDF
TMR0
Bank 0
PCL
FSR
0
REGISTER FILE MAP
(1)
Address map
back to
addresses
in Bank 0
General
Purpose
Registers
EEDATA
STATUS
EECON
INDF
EEADR
PCL
FSR
Bank 1
1
(1)
20h
30h
2Fh
3Fh
Preliminary
4.2.2
The Special Function Registers (SFRs) are registers
used by the CPU and peripheral functions to control the
operation of the device (Table 4-1).
The Special Function Registers can be classified into
two sets. The Special Function Registers associated
with the “core” functions are described in this section.
Those related to the operation of the peripheral
features are described in the section for each
peripheral feature.
SPECIAL FUNCTION REGISTERS
© 2007 Microchip Technology Inc.