41594B Datasheet, PDF (15/372 Pages) Microchip Technology – 8-Bit Flash Microcontroller with nanoWatt XLP Technology

3.0 MEMORY ORGANIZATION
There are three types of memory in PIC12LF1840T48A
devices: Data Memory, Program Memory and Data
EEPROM Memory⁽¹⁾.
• Program Memory
• Data Memory
- Core Registers
- Special Function Registers
- General Purpose RAM
- Common RAM
- Device Memory Maps
- Special Function Registers Summary
• Data EEPROM memory⁽¹⁾
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”.
PIC12LF1840T48A
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 PIC12LF1840T48A 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 Figure 3-1).
TABLE 3-1: DEVICE SIZES AND ADDRESSES
Device
Program Memory Space (Words)
PIC12LF1840T48A
4,096
Last Program Memory Address
0FFFh
 2011-2012 Microchip Technology Inc.
Preliminary
DS41594B-page 15