PIC12LF1501 datasheet(13/352 Pages) MICROCHIP

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DS40001607D-page 13

PIC16(L)F1503

3.0

MEMORY ORGANIZATION

These devices contain the following types of memory:

• Program Memory

- Configuration Words

- Device ID

-User ID

- Flash Program Memory

• Data Memory

- Core Registers

- Special Function Registers

- General Purpose RAM

- Common RAM

The following features are associated with access and

control of program memory and data memory:

• PCL and PCLATH

•Stack

• Indirect Addressing

3.1

Program Memory Organization

The enhanced mid-range core has a 15-bit program

counter capable of addressing a 32K x 14 program

memory space. Table 3-1 shows the memory sizes

implemented. Accessing a location above these

boundaries will cause a wrap-around within the

implemented memory space. The Reset vector is at

0000h and the interrupt vector is at 0004h (See

Figure 3-1).

3.2

High-Endurance Flash

This device has a 128 byte section of high-endurance

program Flash memory (PFM) in lieu of data EEPROM.

This area is especially well suited for nonvolatile data

storage that is expected to be updated frequently over

the life of the end product. See Section 10.2 “Flash

Program Memory Overview”

for more information on

writing data to PFM. See Section 3.2.1.2 “Indirect

Read with FSR”

for more information about using the

FSR registers to read byte data stored in PFM.

TABLE 3-1:

DEVICE SIZES AND ADDRESSES

Device

Program Memory

Space (Words)

Last Program Memory

Address

High-Endurance Flash

Memory Address Range (1)

PIC16LF1503

PIC16F1503

2,048

07FFh

0780h-07FFh

Note 1:

High-endurance Flash applies to low byte of each address in the range.

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