PIC16F datasheet(19/40 Pages) MICROCHIP

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 2010 Microchip Technology Inc.

Advance Information

DS41390C-page 19

PIC16F/LF182X/PIC12F/LF1822

4.3.11

BULK ERASE PROGRAM MEMORY

The Bulk Erase Program Memory command performs

two different functions dependent on the current state

of the address.

A Bulk Erase Program Memory command should not

be issued when the address is greater than 8008h.

After receiving the Bulk Erase Program Memory

command the erase will not complete until the time

interval, TERAB, has expired.

FIGURE 4-11:

BULK ERASE PROGRAM MEMORY

4.3.12

BULK ERASE DATA MEMORY

To perform an erase of the data memory, after a Bulk

Erase Data Memory command, wait a minimum of

TERAB to complete Bulk Erase.

To erase data memory when data code-protect is active

(CPD = 0), the Bulk Erase Program Memory command

should be used.

After receiving the Bulk Erase Data Memory command,

the erase will not complete until the time interval,

TERAB, has expired.

FIGURE 4-12:

BULK ERASE DATA MEMORY COMMAND

Address 0000h-7FFFh:

Program Memory is erased

Configuration Words are erased

If CPD = 0, Data Memory is erased

Address 8000h-8008h:

Program Memory is erased

Configuration Words are erased

User ID Locations are erased

If CPD = 0, Data Memory is erased

Note:

The code protection Configuration bit (CP)

has no effect on the Bulk Erase Program

Memory command.

ICSPCLK

ICSPDAT

TERAB

Next Command

Note:

Data memory will not erase if code-

protected (CPD = 0).

TERAB

ICSPCLK

ICSPDAT

Next Command

Wait a minimum of

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