DEVICE OVERVIEW
This document contains device specific information for the following devices:
⢠PIC18F242 ⢠PIC18F442
⢠PIC18F252 ⢠PIC18F452
These devices come in 28-pin and 40/44-pin packages. The 28-pin devices do not have a Parallel Slave Port (PSP) implemented and the number of Analog-to Digital (A/D) converter input channels is reduced to 5. An overview of features is shown in Table 1-1.
High Performance RISC CPU:
⢠C compiler optimized architecture/instruction set
- Source code compatible with the PIC16 and PIC17 instruction sets
⢠Linear program memory addressing to 32 Kbytes
⢠Linear data memory addressing to 1.5 Kbytes
⢠Up to 10 MIPs operation:
- DC - 40 MHz osc./clock input
- 4 MHz - 10 MHz osc./clock input with PLL active
⢠16-bit wide instructions, 8-bit wide data path
⢠Priority levels for interrupts
⢠8 x 8 Single Cycle Hardware Multiplier
Peripheral Features:
⢠High current sink/source 25 mA/25 mA
⢠Three external interrupt pins
⢠Timer0 module: 8-bit/16-bit timer/counter with 8-bit programmable prescaler
⢠Timer1 module: 16-bit timer/counter
⢠Timer2 module: 8-bit timer/counter with 8-bit period register (time-base for PWM)
⢠Timer3 module: 16-bit timer/counter
⢠Secondary oscillator clock option - Timer1/Timer3
⢠Two Capture/Compare/PWM (CCP) modules.
CCP pins that can be configured as:
- Capture input: capture is 16-bit, max. resolution 6.25 ns (TCY/16)
- Compare is 16-bit, max. resolution 100 ns (TCY)
- PWM output: PWM resolution is 1- to 10-bit, max. PWM freq. @: 8-bit resolution = 156 kHz
10-bit resolution = 39 kHz
⢠Master Synchronous Serial Port (MSSP) module, Two modes of operation:
- 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
Analog Features:
⢠Compatible 10-bit Analog-to-Digital Converter module (A/D) with:
- Fast sampling rate
- Conversion available during SLEEP
- Linearity ⤠1 LSb
⢠Programmable Low Voltage Detection (PLVD)
- Supports interrupt on-Low Voltage Detection
⢠Programmable Brown-out Reset (BOR)
Special Microcontroller Features:
⢠100,000 erase/write cycle Enhanced FLASH program memory typical
⢠1,000,000 erase/write cycle Data EEPROM memory
⢠FLASH/Data EEPROM Retention: > 40 years
⢠Self-reprogrammable under software control
⢠Power-on Reset (POR), Power-up Timer (PWRT) and Oscillator Start-up Timer (OST)
⢠Watchdog Timer (WDT) with its own On-Chip RC Oscillator for reliable operation
⢠Programmable code protection
⢠Power saving SLEEP mode
⢠Selectable oscillator options including:
- 4X Phase Lock Loop (of primary oscillator)
- Secondary Oscillator (32 kHz) clock input
⢠Single supply 5V In-Circuit Serial Programming⢠(ICSPâ¢) via two pins
⢠In-Circuit Debug (ICD) via two pins
CMOS Technology:
⢠Low power, high speed FLASH/EEPROM technology
⢠Fully static design
⢠Wide operating voltage range (2.0V to 5.5V)
⢠Industrial and Extended temperature ranges
⢠Low power consumption:
- < 1.6 mA typical @ 5V, 4 MHz
- 25 µA typical @ 3V, 32 kHz
- < 0.2 µA typical standby current
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