PIC16F15213 datasheet(34/408 Pages) MICROCHIP

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9.1.2.4

Memory Write Protection

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

locations are written from NVMCON registers, the memory is not changed and the WRERR bit of the NVMCON1

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 BBSIZE.

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, and WRTC

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 Fixed Voltage Reference (FVR) voltage readings in millivolts (mV). Table

9-3 holds the DIA information for the PIC16F152 family of microcontrollers.

PIC16F15225/45

Memory Organization

Preliminary Datasheet

DS20006389B-page 34

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