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PIC18F252 28-pin 32kB Microcontroller Datasheet

Photograph
PIC18F252-I/SP - PIC18F252 Flash 28-pin 32kB 40MHz Microcontroller

Features

arrowHigh-Performance RISC CPU

  • - Source code compatible with the PIC16 and PIC17 instruction sets
  • - Linear data memory addressing to 1536 bytes
  • - Linear program memory addressing to 32 Mbytes
  • - 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 with Interrupt-on-Address Bit
  • - I²C Master and Slave mode
  • - Addressable USART Module supports RS-485 and RS-232
  • - Parallel Slave Port (PSP) module
  • - Five 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
  • - 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

  • - 23 I/O pins with individual direction control
  • - 28-pin DIP

Pin Layout
PIC18F252 Pin Layout

Pin Description
Pin Number Description
1 MCLR/VPP - Master Clear Reset
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 Vss - Ground
9 OSC1/CLKI - Oscillator
10 OSC2/CLKO/RA6 - Port A
11 RC0/T1OSO/T1CKI - Port C
12 RC1/T1OSI/CCP2 - Port C
13 RC2/CCP1 - Port C
14 RC3/SCK/SCL - Port C
15 RC4/SDI/SDA - Port C
16 RC5/SDO - Port C
17 RC6/TX/CK - Port C
18 RC7/RX/DT - Port C
19 Vss - Ground
20 Vdd - Positive Power Supply
21 RB0/INT0 - Port B
22 RB1/INT1 - Port B
23 RB2/INT2 - Port B
24 RB3/CCP2 - Port B
25 RB4 - Port B
26 RB5/PGM - Port B
27 RB6/PGC - Port B
28 RB7/PGD - Port B

Dimensional Drawing
PIC18F252 IC Dimensional Drawing