PIC18F242-E/SP Microchip Technology, PIC18F242-E/SP Datasheet - Page 210
PIC18F242-E/SP
Manufacturer Part Number
PIC18F242-E/SP
Description
IC MCU CMOS 40MHZ 8K FLASH 28DIP
Manufacturer
Microchip Technology
Series
PIC® 18Fr
Datasheets
1.PIC16F616T-ISL.pdf
(8 pages)
2.PIC18F242-ISO.pdf
(332 pages)
3.PIC18F242-ISO.pdf
(14 pages)
4.PIC18F242-ISO.pdf
(16 pages)
5.PIC18F242-ISO.pdf
(16 pages)
6.PIC18F242-ISO.pdf
(14 pages)
Specifications of PIC18F242-E/SP
Core Size
8-Bit
Program Memory Size
16KB (8K x 16)
Core Processor
PIC
Speed
40MHz
Connectivity
I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, LVD, POR, PWM, WDT
Number Of I /o
23
Program Memory Type
FLASH
Eeprom Size
256 x 8
Ram Size
768 x 8
Voltage - Supply (vcc/vdd)
4.2 V ~ 5.5 V
Data Converters
A/D 5x10b
Oscillator Type
External
Operating Temperature
-40°C ~ 125°C
Package / Case
28-DIP (0.300", 7.62mm)
Controller Family/series
PIC18
No. Of I/o's
23
Eeprom Memory Size
256Byte
Ram Memory Size
768Byte
Cpu Speed
40MHz
No. Of Timers
4
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With
DVA18XP280 - DEVICE ADAPTER 18F2220 PDIP 28LD
Lead Free Status / RoHS Status
Lead free / RoHS Compliant, Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
PIC18F242-E/SP
Manufacturer:
Microchip Technology
Quantity:
135
- PIC16F616T-ISL PDF datasheet
- PIC18F242-ISO PDF datasheet #2
- PIC18F242-ISO PDF datasheet #3
- PIC18F242-ISO PDF datasheet #4
- PIC18F242-ISO PDF datasheet #5
- PIC18F242-ISO PDF datasheet #6
- Current page: 210 of 332
- Download datasheet (6Mb)
PIC18FXX2
19.4.1
The user memory may be read to or written from any
location using the Table Read and Table Write instruc-
tions. The device ID may be read with Table Reads.
The configuration registers may be read and written
with the Table Read and Table Write instructions.
In User mode, the CPn bits have no direct effect. CPn
bits inhibit external reads and writes. A block of user
memory may be protected from Table Writes if the
WRTn configuration bit is ‘0’. The EBTRn bits control
Table Reads. For a block of user memory with the
EBTRn bit set to ‘0’, a Table Read instruction that
executes from within that block is allowed to read. A
Table Read instruction that executes from a location
FIGURE 19-4:
DS39564C-page 208
TBLPTR = 000FFF
Results: All Table Writes disabled to Blockn whenever WRTn = ‘0’
Register Values
PC = 001FFE
PC = 004FFE
PROGRAM MEMORY
CODE PROTECTION
TABLE WRITE (WRTn) DISALLOWED
Program Memory
TBLWT *
TBLWT *
outside of that block is not allowed to read, and will
result in reading ‘0’s. Figures 19-4 through 19-6
illustrate Table Write and Table Read protection.
Note:
000000h
0001FFh
005FFFh
006000h
007FFFh
000200h
001FFFh
002000h
003FFFh
004000h
.
Code protection bits may only be written to
a ‘0’ from a ‘1’ state. It is not possible to
write a ‘1’ to a bit in the ‘0’ state. Code pro-
tection bits are only set to ‘1’ by a full chip
erase or block erase function. The full chip
erase and block erase functions can only
be initiated via ICSP or an external
programmer.
Configuration Bit Settings
WRTB,EBTRB = 11
WRT0,EBTR0 = 01
WRT1,EBTR1 = 11
WRT2,EBTR2 = 11
WRT3,EBTR3 = 11
© 2006 Microchip Technology Inc.
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