PIC18F23K20 Data sheet

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  PIC18F2XK20/4XK20 28/40/44-Pin Flash MCU with 10-Bit A/D and nanoWatt Technology

High Performance RISC CPU:

C Compiler Optimized Architecture:
- Optional extended instruction set designed to
optimize re-entrant code
Up to 1024 bytes Data EEPROM
Up to 64 Kbytes Linear program memory
addressing
Up to 3936 bytes Linear data memory addressing
Up to 16 MIPS operation
16-bit wide instructions, 8-bit wide data path
Priority levels for interrupts
31-level, software accessible hardware stack
8 x 8 single-cycle hardware multiplier
Flexible Oscillator Structure:
Precision 16 MHz internal oscillator block:
- Factory calibrated to ± 1%
- Software selectable frequencies range of
31 kHz to 16 MHz
- 64 MHz performance available using PLL –
no external components required
Four crystal modes up to 64 MHz
Two external clock modes up to 64 MHz
4X Phase Lock Loop (PLL)
Secondary oscillator using Timer1 @ 32 kHz
Fail-Safe Clock Monitor:
- Allows for safe shutdown if peripheral clock
stops
- Two-Speed Oscillator Start-up
Special Microcontroller Features:
Operating Voltage Range: 1.8V to 3.6V
Self-Programmable under Software Control
Programmable 16-Level High/Low-Voltage
Detection (HLVD) module:
- Interrupt on High/Low-Voltage Detection
Programmable Brown-out Reset (BOR):
- With software enable option
Extended Watchdog Timer (WDT):
- Programmable period from 4 ms to 131s
Single-Supply 3V In-Circuit Serial
Programming™ (ICSP™) via two pins
In-Circuit Debug (ICD) via Two Pins
Extreme Low-Power Management
with nanoWatt XLP™:
Sleep mode: 100 nA
Watchdog Timer: 500 nA
Timer1 Oscillator: 500 nA @ 32 kHz
Analog Features:
Analog-to-Digital Converter (ADC) module :
- 10-bit resolution, 13 External Channels
- Auto-acquisition capability
- Conversion available during Sleep
- 1.2V Fixed Voltage Reference (FVR) channel
- Independent input multiplexing
Analog Comparator module:
- Two rail-to-rail analog comparators
- Independent input multiplexing
Voltage Reference (CVREF) module
- Programmable (% VDD), 16 steps
- Two 16-level voltage ranges using VREF pins
Peripheral Highlights:
Up to 35 I/O pins plus 1 input-only pin:
- High-Current Sink/Source 25 mA/25 mA
- Three programmable external interrupts
- Four programmable interrupt-on-change
- Eight programmable weak pull-ups
- Programmable slew rate
Capture/Compare/PWM (CCP) module
Enhanced CCP (ECCP) module:
- One, two 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)
- I2C™ Master and Slave modes with address
mask
Enhanced Universal Synchronous Asynchronous
Receiver Transmitter (EUSART) module:
- Supports RS-485, RS-232 and LIN
- RS-232 operation using internal oscillator
- Auto-Wake-up on Break
- Auto-Baud Detect

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