PIC18F252-I/SP Microchip Technology Inc., PIC18F252-I/SP Datasheet - Page 211

• Manufacturer Part Number: PIC18F252-I/SP
• Description: Microcontroller; 32 KB Flash; 1536 RAM; 256 EEPROM; 25 I/O; 28-Pin-SPDIP
• Manufacturer: Microchip Technology Inc.

Specifications of PIC18F252-I/SP

• A/d Inputs: 5-Channel, 10-Bit
• Comparators: 2
• Cpu Speed: 10 MIPS
• Eeprom Memory: 256 Bytes
• Input Output: 25
• Interface: I2C/SPI/USART
• Memory Type: Flash
• Number Of Bits: 8
• Package Type: 28-pin SPDIP
• Programmable Memory: 32K Bytes
• Ram Size: 1.5K Bytes
• Speed: 40 MHz
• Timers: 1-8-bit, 3-16-bit
• Voltage, Range: 2-5.5 V
• Lead Free Status / Rohs Status: RoHS Compliant part Electrostatic Device

FIGURE 19-5:
FIGURE 19-6:
© 2006 Microchip Technology Inc.
Results: All Table Reads from external blocks to Blockn are disabled whenever EBTRn = ‘0’.
Register Values
TBLPTR = 000FFF
Register Values
TBLPTR = 000FFF
Results: Table Reads permitted within Blockn, even when EBTRBn = ‘0’.
PC = 002FFE
PC = 001FFE
TABLAT register returns a value of “0”.
TABLAT register returns the value of the data at the location TBLPTR.
EXTERNAL BLOCK TABLE READ (EBTRn) DISALLOWED
EXTERNAL BLOCK TABLE READ (EBTRn) ALLOWED
Program Memory
Program Memory
TBLRD *
TBLRD *
000000h
000200h
001FFFh
002000h
003FFFh
004000h
005FFFh
006000h
007FFFh
0001FFh
000000h
0001FFh
000200h
001FFFh
002000h
003FFFh
004000h
005FFFh
006000h
007FFFh
Configuration Bit Settings
Configuration Bit Settings
WRT1,EBTR1 = 11
WRT2,EBTR2 = 11
WRT3,EBTR3 = 11
WRTB,EBTRB = 11
WRT0,EBTR0 = 10
WRTB,EBTRB = 11
PIC18FXX2
WRT0,EBTR0 = 10
WRT1,EBTR1 = 11
WRT2,EBTR2 = 11
WRT3,EBTR3 = 11
DS39564C-page 209