SE9 datasheet(21/478 Pages) MICROCHIP

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DS41414D-page 21

PIC16(L)F1946/1947

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

• Data EEPROM memory(1)

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

for

the

PIC16(L)F1946/47

family.

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 Figures 3-1 and 3-2).

Note 1: The Data EEPROM Memory and the

method to access Flash memory through

the EECON registers is described in

Section 11.0 “Data EEPROM and Flash

Program Memory Control”.

TABLE 3-1:

DEVICE SIZES AND ADDRESSES

Device

Program Memory Space (Words)

Last Program Memory Address

PIC16(L)F1946

8,192

1FFFh

PIC16(L)F1947

16,384

3FFFh

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