Datasheet
2010 Microchip Technology Inc. Preliminary DS41350E-page 3
PIC18F/LF1XK50
Universal Serial Bus Features:
• USB V2.0 Compliant SIE
• Full Speed (12 Mb/s) and Low Speed (1.5 Mb/s)
• Supports Control, Interrupt, Isochronous and
Bulk Transfers
• Supports up to 16 Endpoints (8 bidirectional)
• 256-byte Dual Access RAM for USB
• Input-change interrupt on D+/D- for detecting
physical connection to USB host
High Performance RISC CPU:
• C Compiler Optimized Architecture:
- Optional extended instruction set designed to
optimize re-entrant code
- 256 bytes, data EEPROM
- Up to 16 Kbytes linear program memory
addressing
- Up to 768 bytes linear data memory
addressing
• Priority levels for Interrupts
• 8 x 8 Single-Cycle Hardware Multiplier
Flexible Oscillator Structure:
• CPU divider to run the core slower than the USB
peripheral
• 16 MHz Internal Oscillator Block:
- Software selectable frequencies, 31 kHz to
16 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
• Four Crystal modes, up to 48 MHz
• External Clock modes, up to 48 MHz
• 4X Phase Lock Loop (PLL)
• Secondary oscillator using Timer1 at 32 kHz
• Fail-Safe Clock Monitor:
- Allows for safe shutdown if primary or second-
ary oscillator stops
• Two-speed Oscillator Start-up
Special Microcontroller Features:
• Full 5.5V Operation – PIC18F1XK50
• 1.8V-3.6V Operation – PIC18LF1XK50
• Self-programmable under Software Control
• Programmable Brown-out Reset (BOR)
- With software enable option
• Extended Watchdog Timer (WDT)
- Programmable period from 4ms to 131s
• Single-supply 3V In-Circuit Serial Programming™
(ICSP™) via two pins
Extreme Low-Power Management
PIC18LF1XK50 with nanoWatt XLP:
• Sleep mode: 24 nA
• Watchdog Timer: 450 nA
• Timer1 Oscillator: 790 nA @ 32 kHz
Analog Features:
• Analog-to-Digital Converter (ADC) module:
- 10-bit resolution, 9 external channels
- Auto acquisition capability
- Conversion available during Sleep
- Internal 1.024V Fixed Voltage Reference
(FVR) channel
- Independent input multiplexing
• Dual Analog Comparators
- Rail-to-rail operation
- Independent input multiplexing
• Voltage Reference module:
- Programmable (% of V
DD), 16 steps
- Two 16-level voltage ranges using V
REF pins
- Programmable Fixed Voltage Reference
(FVR), 3 levels
• On-chip 3.2V LDO Regulator – (PIC18F1XK50)
Peripheral Highlights:
• 14 I/O Pins plus 1 Input-only pin:
- High-current sink/source 25 mA/25 mA
- 7 Programmable weak pull-ups
- 7 Programmable Interrupt-on-change pins
- 3 programmable external interrupts
- Programmable slew rate
• Enhanced Capture/Compare/PWM (ECCP)
module:
- One, two, three, or four PWM outputs
- Selectable polarity
- Programmable dead time
- Auto-shutdown and Auto-restart
• Master Synchronous Serial Port (MSSP) module:
- 3-wire SPI (supports all 4 modes)
-I
2
C™ Master and Slave modes (Slave mode
address masking)
• Enhanced Universal Synchronous Asynchronous
Receiver Transmitter (EUSART) module:
- Supports RS-485, RS-232 and LIN 2.0
- RS-232 operation using internal oscillator
- Auto-Baud Detect
- Auto-Wake-up on Break
• SR Latch mode
20-Pin USB Flash Microcontrollers with nanoWatt XLP Technology