PIC16F15213 datasheet(36/439 Pages) MICROCHIP

36 / 439 page

Important: Storage Area Flash, when enabled, may be used to store variables or other information, often

in devices without EEPROM; however, the SAF is accessed in the same manner as other Flash memory

areas.

9.1.2.4

Memory Write Protection

All the memory blocks have corresponding write protection bits (WRTAPP, WRTB, WRTC, and WRTSAF). If write-

protected locations are written from NVMCON registers, the memory is not changed and the WRERR bit of the

NVMCON1 register is set as explained in the “WRERR Bit” section from the “NVM - Nonvolatile Memory Control”

chapter.

9.1.2.5

Memory Violation

A Memory Execution Violation Reset occurs while executing an instruction that has been fetched from outside a valid

execution area, clearing the MEMV bit. Refer to the “Memory Execution Violation” section in the “Resets” chapter

for the available valid program execution areas and the PCON1 register definition for MEMV bit conditions.

Table 9-2. Memory Access Partition

REG

Address

Partition

BBEN = 1

SAFEN = 1

BBEN = 1

SAFEN = 0

BBEN = 0

SAFEN = 1

BBEN = 0

SAFEN = 0

PFM

00 0000h ... Last Block

Memory Address

Application

Block(4)

Application

Block(4)

Boot Block(4)

Last Boot Block Memory

Address + 1(1) ...

Last Program Memory

Address - 80h

Application

Block(4)

Application

Block(4)

Last Program Memory

Address - 7Fh(2) ...

Last Program Memory

Address

SAF(4)

CONFIG

Config Memory

Address(3)

CONFIG

Notes:

Last Boot Block Memory Address is based on the BBSIZE Configuration bits.

Last Program Memory Address is the Flash size given in the “Program Memory Organization” section in the

“NVM - Nonvolatile Memory Control” chapter.

Config Memory Address are the address locations of the Configuration Words given in the “NVMREG Access

to DIA, DCI, User ID, DEV/REV ID, and Configuration Words” section in the “NVM - Nonvolatile Memory

Control” chapter.

Each memory block has a corresponding write protection fuse defined by the WRTAPP, WRTB, WRTC, and

WRTSAF Configuration bits.

9.1.3

Device Information Area (DIA)

The Device Information Area (DIA) is a dedicated region in the Program Flash Memory. The data is mapped from

address 8100h to 811 Fh. These locations are read-only and cannot be erased or modified. The DIA contains

the Microchip Unique Identifier words, and the FVR voltage readings in millivolts (mV). Table 9-3 holds the DIA

information for the PIC16F152 family of microcontrollers.

PIC16F15213/14/23/24/43/44

Memory Organization

and its subsidiaries

Data Sheet

DS40002195E-page 36

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