DEVICE OVERVIEW
This document contains device specific information for the following devices:
⢠PIC18F2420 ⢠PIC18LF2420
⢠PIC18F2520 ⢠PIC18LF2520
⢠PIC18F4420 ⢠PIC18LF4420
⢠PIC18F4520 ⢠PIC18LF4520
This family offers the advantages of all PIC18 micro controllers â namely, high computational performance at an economical price â with the addition of high endurance, Enhanced Flash program memory. On top of these features, the PIC18F2420/2520/4420/4520 family introduces design enhancements that make these microcontrollers a logical choice for many high performance, power sensitive applications.
Power Managed Modes:
⢠Run: CPU on, peripherals on
⢠Idle: CPU off, peripherals on
⢠Sleep: CPU off, peripherals off
⢠Idle mode currents down to 5.8 µA typical
⢠Sleep mode current down to 0.1 µA typical
⢠Timer1 Oscillator: 1.8 µA, 32 kHz, 2V
⢠Watchdog Timer: 2.1 µA
⢠Two-Speed Oscillator Start-up
Peripheral Highlights:
⢠High-current sink/source 25 mA/25 mA
⢠Three programmable external interrupts
⢠Four input change interrupts
⢠Up to 2 Capture/Compare/PWM (CCP) modules, one with Auto-Shutdown (28-pin devices)
⢠Enhanced Capture/Compare/PWM (ECCP) module (40/44-pin devices only):
- One, two or four PWM outputs
- Selectable polarity
- Programmable dead time
- Auto-Shutdown and Auto-Restart
⢠Master Synchronous Serial Port (MSSP) module
supporting 3-wire SPI⢠(all 4 modes) and I2C⢠Master and Slave Modes
⢠Enhanced Addressable USART module:
- Supports RS-485, RS-232 and LIN 1.2
- RS-232 operation using internal oscillator block (no external crystal required)
- Auto-Wake-up on Start bit
- Auto-Baud Detect
⢠10-bit, up to 13-channel Analog-to-Digital Converter module (A/D):
- Auto-acquisition capability
- Conversion available during Sleep
⢠Dual analog comparators with input multiplexing)
Flexible Oscillator Structure:
⢠Four Crystal modes, up to 40 MHz
⢠4X Phase Lock Loop (available for crystal and internal oscillators)
⢠Two External RC modes, up to 4 MHz
⢠Two External Clock modes, up to 40 MHz
⢠Internal oscillator block:
- 8 user selectable frequencies, from 31 kHz to 8 MHz
- Provides a complete range of clock speeds from 31 kHz to 32 MHz when used with PLL
- User tunable to compensate for frequency drift
⢠Secondary oscillator using Timer1 @ 32 kHz
⢠Fail-Safe Clock Monitor:
- Allows for safe shutdown if peripheral clock stops
Special Microcontroller Features:
⢠C compiler optimized architecture:
- Optional extended instruction set designed to optimize re-entrant code
⢠100,000 erase/write cycle Enhanced Flash program memory typical
⢠1,000,000 erase/write cycle Data EEPROM memory typical
⢠Flash/Data EEPROM Retention: 100 years typical
⢠Self-programmable under software control
⢠Priority levels for interrupts
⢠8 x 8 Single-Cycle Hardware Multiplier
⢠Extended Watchdog Timer (WDT):
- Programmable period from 4 ms to 131s
⢠Single-supply 5V In-Circuit Serial Programming⢠(ICSPâ¢) via two pins
⢠In-Circuit Debug (ICD) via two pins
⢠Wide operating voltage range: 2.0V to 5.5V
⢠Programmable 16-level High/Low-Voltage
Detection (HLVD) module:
- Supports interrupt on High/Low-Voltage Detection
⢠Programmable Brown-out Reset (BOR
- With software enable option
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