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PIC18F452 40-pin 32kB Microcontroller Datasheet

Photograph
PIC18F452-I/P - PIC18F452 Flash 40-pin 32kB 40MHz Microcontroller

Features

arrowHigh-Performance RISC CPU

  • - Source code compatible with the PIC16 and PIC17 instruction sets
  • - Linear program memory addressing to 32 Kbytes
  • - DC - 40 MHz osc./clock input
  • - 16-bit wide instructions, 8-bit wide data path
  • - Priority levels for interrupts
  • - 8 x 8 Single Cycle Hardware Multiplier
  • - 32 kBytes Flash Program Memory
  • - 1536 Byte RAM Data Memory
  • - 256 Byte RAM Data Memory

arrowPeripheral Features

  • - High current sink/source 25mA/25mA
  • - Two 16-bit timer/counter (TMR1, TMR3)
  • - One 8-bit/16-bit timer/counter with prescaler
  • - One 8-bit timer/counter with 8-bit period register
  • - Capture 16-bit, max. resolution 6.25ns(TCY/16)
  • - Compare 16-bit, max. resolution 100ns
  • - 3-wire SPI (supports all 4 SPI modes)
  • - I²C Master and Slave mode
  • - Addressable USART Module supports RS-485 and RS-232
  • - Parallel Slave Port (PSP) module
  • - Eight Channel 10-bit Analog-to-Digital Converter

arrowSpecial Microcontroller Features

  • - Power-On Reset
  • - Power-up Timer (PWRT) and Oscillator Start-Up Timer (OST)
  • - 1,000 erase/write cycles Enhanced Flash Program Memory
  • - 1,000,000 typical erase/write cycles EEPROM Data Memory
  • - Watchdog Timer (WDT) with its own On-Chip RC oscillator
  • - Programmable code protection
  • - Power saving SLEEP mode
  • - 4X Phase Lock Loop (of primary oscillator)
  • - Secondary Oscillator (32kHz) clock input
  • - Single supply 5V In-circuit Serial Programming via two pins
  • - In-Circuit Debug (ICD)

arrowCMOS Technology

  • - Low power, high speed CMOS FLASH technology
  • - Fully Static Design
  • - Wide Operating Voltage Range (2.0V to 5.5V)

arrowI/O and Packages

  • - 34 I/O pins with individual direction control
  • - 40-pin DIP

Pin Layout
PIC18F452 Pin Layout

Pin Description
Pin Number Description
1 MCLR/VPP - Master Clear Input
2 RA0/AN0 - Port A
3 RA1/AN1 - Port A
4 RA2/AN2/VREF- - Port A
5 RA3/AN3/VREF+ - Port A
6 RA4/T0CKI - Port A
7 RA5/AN4/SS/LVDIN - Port A
8 RE0/RD/AN5 - Port E
9 RE1/WR/AN6 - Port E
10 RE2/CS/AN7 - Port E
11 Vdd - Positive Power Supply
12 Vss - Ground
13 OSC1/CLKI - Oscillator Input
14 OSC2/CLKO/RA6 - Port A
15 RC0/T1OSO/T1CKI - Port C
16 RC1/T1OSI/CCP2 - Port C
17 RC2/CCP1 - Port C
18 RC3/SCK/SCL - Port C
19 RD0/PSP0 - Port D
20 RD1/PSP1 - Port D
21 RD2/PSP2 - Port D
22 RD3/PSP3 - Port D
23 RC4/SDI/SDA - Port C
24 RC5/SDO - Port C
25 RC6/TX/CK - Port C
26 RC7/RX/DT - Port C
27 RD4/PSP4 - Port D
28 RD5/PSP5 - Port D
29 RD6/PSP6 - Port D
30 RD7/PSP7 - Port D
31 Vss - Ground
32 Vdd - Positive Power Supply
33 RB0/INT0 - Port B
34 RB1/INT1 - Port B
35 RB2/INT2 - Port B
36 RB3/CCP2 - Port B
37 RB4 - Port B
38 RB5/PGM - Port B
39 RB6/PGC - Port B
40 RB7/PGD - Port B

Dimensional Drawing
PIC18F452 IC Dimensional Drawing