PIC18F23K20 MICROCHIP [Microchip Technology], PIC18F23K20 Datasheet - Page 310
![no-image](/images/no-image-200.jpg)
PIC18F23K20
Manufacturer Part Number
PIC18F23K20
Description
28/40/44-Pin Flash Microcontrollers with nanoWatt XLP Technology
Manufacturer
MICROCHIP [Microchip Technology]
Datasheet
1.PIC18F23K20.pdf
(456 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
PIC18F23K20T-I/SO
Manufacturer:
Microchip Technology
Quantity:
135
- Current page: 310 of 456
- Download datasheet (4Mb)
PIC18F2XK20/4XK20
23.3
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 or five
blocks, depending on the device. One of these is a
Boot Block of 0.5K or 2K bytes, depending on the
device. The remainder of the memory is divided into
individual blocks on binary boundaries.
FIGURE 23-2:
TABLE 23-3:
DS41303G-page 310
300008h
300009h
30000Ah
30000Bh
30000Ch
30000Dh
Legend: Shaded cells are unimplemented.
Note 1:
®
microcontroller devices.
File Name
(2000h-1FFFFFh)
Program Verification and
Code Protection
(PIC18FX3K20)
Unimplemented
(1000h-1FFFh)
(000h-1FFh)
(200h-FFFh)
Implemented, but not used in PIC18FX3K20 and PIC18FX4K20 devices.
Boot Block
CONFIG5L
CONFIG5H
CONFIG6L
CONFIG6H
CONFIG7L
CONFIG7H
Read ‘0’s
8 Kbytes
Block 0
Block 1
SUMMARY OF CODE PROTECTION REGISTERS
CODE-PROTECTED PROGRAM MEMORY FOR PIC18F2XK20/4XK20
WRTD
Bit 7
CPD
—
—
—
—
(4000h-1FFFFFh)
(PIC18FX4K20)
Unimplemented
(2000h-3FFFh)
(800h-1FFFh)
(000h-7FFh)
16 Kbytes
Boot Block
Read ‘0’s
Block 0
Block 1
MEMORY SIZE/DEVICE
EBTRB
WRTB
Bit 6
CPB
—
—
—
WRTC
Bit 5
(8000h-1FFFFFh)
(PIC18FX5K20)
—
—
—
—
—
Unimplemented
(2000h-3FFFh)
(4000h-5FFFh)
(6000h-7FFFh)
(800h-1FFFh)
(000h-7FFh)
Boot Block
32 Kbytes
Read ‘0’s
Block 0
Block 1
Block 2
Block 3
Bit 4
—
—
—
—
—
—
Each of the blocks has three code protection bits asso-
ciated with them. They are:
• Code-Protect bit (CPn)
• Write-Protect bit (WRTn)
• External Block Table Read bit (EBTRn)
Figure 23-2 shows the program memory organization
for 8, 16 and 32-Kbyte devices and the specific code
protection bit associated with each block. The actual
locations of the bits are summarized in Table 23-3.
(10000h-1FFFFFh)
EBTR3
(PIC18FX6K20)
WRT3
(C000h-FFFFh)
Unimplemented
(8000h-BFFFh)
(4000h-7FFFh)
CP3
(800h-3FFFh)
(000h-7FFh)
Bit 3
Boot Block
64 Kbytes
—
—
—
Read ‘0’s
Block 0
Block 1
Block 2
Block 3
(1)
(1)
(1)
EBTR2
WRT2
CP2
Bit 2
2010 Microchip Technology Inc.
—
—
—
(1)
(1)
(1)
Block Code Protection
CPB, WRTB, EBTRB
CP0, WRT0, EBTR0
CP1, WRT1, EBTR1
CP2, WRT2, EBTR2
CP3, WRT3, EBTR3
(Unimplemented
Memory Space)
Controlled By:
EBTR1
WRT1
Bit 1
CP1
—
—
—
EBTR0
WRT0
Bit 0
CP0
—
—
—
Related parts for PIC18F23K20
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
![PIC18F-LF1XK50](/images/no-image3.png)
Part Number:
Description:
20-Pin USB Flash Microcontrollers
Manufacturer:
MICROCHIP [Microchip Technology]
Datasheet:
![PIC18F6393T-I/PT](/photos/6/81/68123/c04-066_pf_tmb.jpg)
Part Number:
Description:
PIC18F With 128-segment LCD Driver And 12-bit ADC, 8KB Flash, 768B RAM, CCP, MSS
Manufacturer:
Microchip Technology
Datasheet:
![PIC18F6493T-I/PT](/photos/6/81/68123/c04-066_pf_tmb.jpg)
Part Number:
Description:
PIC18F With 128-segment LCD Driver And 12-bit ADC, 16KB Flash, 768B RAM, CCP, MS
Manufacturer:
Microchip Technology
Datasheet:
![PIC18F8393T-I/PT](/images/manufacturer_photos/0/4/439/microchip_technology_tmb.jpg)
Part Number:
Description:
PIC18F With 192-segment LCD Driver And 12-bit ADC, 8KB Flash, 768B RAM, CCP, MSS
Manufacturer:
Microchip Technology
Datasheet:
![PIC18F8493T-I/PT](/images/manufacturer_photos/0/4/439/microchip_technology_tmb.jpg)
Part Number:
Description:
PIC18F With 192-segment LCD Driver And 12-bit ADC, 16KB Flash, 768B RAM, CCP, MS
Manufacturer:
Microchip Technology
Datasheet:
![PIC18F6585-I/L](/photos/16/12/161282/68-plcc-large-300dpi-lyrd_tmb.jpg)
Part Number:
Description:
Microcontrollers (MCU) 48KB 3328 RAM 52 I/O
Manufacturer:
Microchip Technology
Datasheet:
![PIC18F6680-I/L](/photos/16/12/161282/68-plcc-large-300dpi-lyrd_tmb.jpg)
Part Number:
Description:
Microcontrollers (MCU) 64KB 3328 RAM 52 I/O
Manufacturer:
Microchip Technology
Datasheet:
![PIC18F65K90T-I/MR](/photos/16/3/160368/qfn64_tmb.jpg)
Part Number:
Description:
32kB Flash, 2kB RAM, 1kB EE, NanoWatt XLP, LCD 64 QFN 9x9x0.9mm T/R
Manufacturer:
Microchip Technology
Datasheet:
![PIC18F65K90T-I/PT](/photos/16/3/160367/tqfp-64_tmb.jpg)
Part Number:
Description:
32kB Flash, 2kB RAM, 1kB EE, NanoWatt XLP, LCD 64 TQFP 10x10x1mm T/R
Manufacturer:
Microchip Technology
Datasheet:
![PIC18F87K90T-I/PT](/photos/40/31/403173/tqfp-80_tmb.jpg)
Part Number:
Description:
128kB Flash, 4kB RAM, 1kB EE, 16MIPS, NanoWatt XLP, LCD, 5V 80 TQFP 12x12x1mm T/
Manufacturer:
Microchip Technology
Datasheet:
![PIC18F65K90-I/MR](/photos/16/3/160368/qfn64_tmb.jpg)
Part Number:
Description:
32kB Flash, 2kB RAM, 1kB EE, NanoWatt XLP, LCD 64 QFN 9x9x0.9mm TUBE
Manufacturer:
Microchip Technology
Datasheet:
![PIC18F65K90-I/PT](/photos/16/3/160367/tqfp-64_tmb.jpg)
Part Number:
Description:
32kB Flash, 2kB RAM, 1kB EE, NanoWatt XLP, LCD 64 TQFP 10x10x1mm TRAY
Manufacturer:
Microchip Technology
![PIC18F87K90-I/PT](/photos/40/31/403173/tqfp-80_tmb.jpg)
Part Number:
Description:
128kB Flash, 4kB RAM, 1kB EE, 16MIPS, NanoWatt XLP, LCD, 5V 80 TQFP 12x12x1mm TR
Manufacturer:
Microchip Technology
![PIC1-100-JT](/images/no-image3.png)
Part Number:
Description:
SURFACE MOUNT POWER INDUCTORS
Manufacturer:
RCD [RCD COMPONENTS INC.]
Datasheet: