AC162078 Microchip Technology, AC162078 Datasheet - Page 207

• Manufacturer Part Number: AC162078
• Description: HEADER INTRFC MPLAB ICD2 18F1330
• Manufacturer: Microchip Technology

Specifications of AC162078

• Accessory Type: Transition Header
• Lead Free Status / RoHS Status: Not applicable / Not applicable
• For Use With/related Products: ICD2
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Not applicable / Not applicable

20.5
The overall structure of the code protection on the
PIC18 Flash devices differs significantly from other
PIC
The user program memory is divided into three blocks.
One of these is a Boot Block of variable size (maximum
2 Kbytes). The remainder of the memory is divided into
two blocks on binary boundaries.
FIGURE 20-5:
TABLE 20-3:
 2009 Microchip Technology Inc.
300008h
300009h
30000Ah
30000Bh
30000Ch
30000Dh
Legend: Shaded cells are unimplemented.
®
devices.
File Name
Program Verification and
Code Protection
CONFIG5L
CONFIG5H
CONFIG6L
CONFIG6H
CONFIG7L
CONFIG7H
Unimplemented
Unimplemented
(PIC18F1230)
Boot Block
4 Kbytes
Read ‘0’s
Read ‘0’s
SUMMARY OF CODE PROTECTION REGISTERS
Block 0
Block 1
MEMORY SIZE/DEVICE
CODE-PROTECTED PROGRAM MEMORY FOR PIC18F1230/1330
WRTD
Bit 7
CPD
—
—
—
—
EBTRB
Unimplemented
WRTB
(PIC18F1330)
Bit 6
CPB
—
—
—
Boot Block
8 Kbytes
Read ‘0’s
Block 0
Block 1
WRTC
Bit 5
—
—
—
—
—
000000h
0003FFh
000400h
0007FFh
000800h
000FFFh
001000h
001FFFh
002000h
1FFFFFh
Address
Range
Bit 4
Each of the three blocks has three code protection bits
associated with them. They are:
• Code-Protect bit (CPx)
• Write-Protect bit (WRTx)
• External Block Table Read bit (EBTRx)
Figure 20-5 shows the program memory organization
for 4 and 8-Kbyte devices and the specific code
protection bit associated with each block. The actual
locations of the bits are summarized in Table 20-3.
—
—
—
—
—
—
PIC18F1230/1330
Bit 3
—
—
—
—
—
—
(Unimplemented Memory Space)
Block Code Protection
CPB, WRTB, EBTRB
CP0, WRT0, EBTR0
CP1, WRT1, EBTR1
CP2, WRT2, EBTR2
Controlled By:
Bit 2
—
—
—
—
—
—
EBTR1
WRT1
Bit 1
CP1
DS39758D-page 207
—
—
—
EBTR0
WRT0
Bit 0
CP0
—
—
—