PIC18F452-I/LG Microchip Technology, PIC18F452-I/LG Datasheet - Page 37

IC MCU FLASH 16KX16 W/AD 44PLCC

PIC18F452-I/LG

Manufacturer Part Number
PIC18F452-I/LG
Description
IC MCU FLASH 16KX16 W/AD 44PLCC
Manufacturer
Microchip Technology
Series
PIC® 18Fr

Specifications of PIC18F452-I/LG

Core Processor
PIC
Core Size
8-Bit
Speed
40MHz
Connectivity
I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, LVD, POR, PWM, WDT
Number Of I /o
34
Program Memory Size
32KB (16K x 16)
Program Memory Type
FLASH
Eeprom Size
256 x 8
Ram Size
1.5K x 8
Voltage - Supply (vcc/vdd)
4.2 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
External
Operating Temperature
-40°C ~ 85°C
Package / Case
44-PLCC
For Use With
XLT44L2 - SOCKET TRAN ICE 44PLCCDVA16XL441 - ADAPTER DEVICE ICE 44PLCC
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
4.0
There are three memory blocks in Enhanced MCU
devices. These memory blocks are:
• Program Memory
• Data RAM
• Data EEPROM
Data and program memory use separate busses,
which allows for concurrent access of these blocks.
Additional detailed information for FLASH program
memory and Data EEPROM is provided in Section 5.0
and Section 6.0, respectively.
4.1
A 21-bit program counter is capable of addressing the
2-Mbyte program memory space. Accessing a location
between the physically implemented memory and the
2-Mbyte address will cause a read of all ’0’s (a NOP
instruction).
The PIC18F252 and PIC18F452 each have 32 Kbytes
of FLASH memory, while the PIC18F242 and
PIC18F442 have 16 Kbytes of FLASH. This means that
PIC18FX52 devices can store up to 16K of single word
instructions, and PIC18FX42 devices can store up to
8K of single word instructions.
The RESET vector address is at 0000h and the
interrupt vector addresses are at 0008h and 0018h.
Figure 4-1 shows the Program Memory Map for
PIC18F242/442 devices and Figure 4-2 shows the
Program Memory Map for PIC18F252/452 devices.
© 2006 Microchip Technology Inc.
MEMORY ORGANIZATION
Program Memory Organization
PIC18FXX2
DS39564C-page 35

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