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PIC16F1824 Datasheet PDF : 40 Pages
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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.
Address 0000h-7FFFh:
Program Memory is erased
Configuration Words are erased
If CPD = 0, Data Memory is erased
After receiving the Bulk Erase Program Memory
command the erase will not complete until the time
interval, TERAB, has expired.
Note:
The code protection Configuration bit (CP)
has no effect on the Bulk Erase Program
Memory command.
Address 8000h-8008h:
Program Memory is erased
Configuration Words are erased
User ID Locations are erased
If CPD = 0, Data Memory is erased
A Bulk Erase Program Memory command should not
be issued when the address is greater than 8008h.
FIGURE 4-11:
BULK ERASE PROGRAM MEMORY
ICSPCLK
ICSPDAT
123
456
TERAB
1
0
01
0
X
Next Command
1
2
3
X
X
X
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.
Note: Data memory will not erase if code-
protected (CPD = 0).
FIGURE 4-12:
BULK ERASE DATA MEMORY COMMAND
Wait a minimum of
TERAB
Next Command
123 456
12
ICSPCLK
ICSPDAT
11
0
1
XX
X0
2010 Microchip Technology Inc.
Advance Information
DS41390C-page 19
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