DEVICE OVERVIEW
The PIC12F/LF1822/16F/LF1823 are described within this data sheet. They are available in 8/14 pin packages.
Figure 1-1 shows a block diagram of the PIC12F/LF1822/16F/LF1823 devices. Tables 1-2 and 1-3 show the pinout descriptions.

High-Performance RISC CPU:
• Only 49 Instructions to Learn:
- All single-cycle instructions except branches
• Operating Speed:
- DC – 32 MHz oscillator/clock input
- DC – 125 ns instruction cycle
• Interrupt Capability with Automatic Context Saving
• 16-Level Deep Hardware Stack with Optional Overflow/Underflow Reset
• Direct, Indirect and Relative Addressing modes:
- Two full 16-bit File Select Registers (FSRs)
- FSRs can read program and data memory

Flexible Oscillator Structure:
• Precision 32 MHz internal Oscillator Block:
- Factory calibrated to ± 1%, typical
- Software selectable frequencies range of 31 kHz to 32 MHz
• 31 kHz Low-Power Internal Oscillator
• Four crystal modes up to 32 MHz
• Three external clock modes up to 32 MHz
• 4X Phase Lock Loop (PLL)
• Fail-Safe Clock Monitor:
- Allows for safe shutdown if peripheral clock stops
• Two-Speed Oscillator Start-up
• Reference Clock Module:
- Programmable clock output frequency and duty-cycle

Special Microcontroller Features:
• Full 5.5V operation – PIC12F1822/16F1823
• 1.8V-3.6V operation – PIC12LF1822/16LF1823
• Self-reprogrammable under software control
• Power-on Reset (POR), Power-up Timer (PWRT) and Oscillator Start-up Timer (OST)
• Programmable Brown-out Reset (BOR)
• Extended Watchdog Timer (WDT)
• In-Circuit Serial Programming™ (ICSP™) via two pins
• In-Circuit Debug (ICD) via two pins
• Enhanced Low-Voltage Programming (LVP)
• Operating Voltage Range:
- 1.8V-5.5V (PIC12F1822/16F1823)
- 1.8V-3.6V (PIC12LF1822/16LF1823)
• Programmable Code Protection
• Self-Programmable under Software Control

Low-Power Features:
• Standby Current (PIC12LF1822/16LF1823):
- 30 nA @ 1.8V, typical
• Operating Current (PIC12LF1822/16LF1823):
-75A @ 1 MHz, 1.8V, typical
• Low-Power Watchdog Timer Current (PIC12LF1822/16LF1823):
- 500 nA @ 1.8V, typical

Analog Features:
• Analog-to-Digital Converter (ADC) module:
- 10-bit resolution, up to 8 channels
- Conversion available during Sleep
• Analog Comparator module:
- Up to two rail-to-rail analog comparators
- Power mode control
- Software controllable hysteresis
• Voltage Reference module:
- Fixed Voltage Reference (FVR) with 1.024V, 2.048V and 4.096V output levels
- 5-bit rail-to-rail resistive DAC with positive and negative reference selection

Peripheral Highlights:
• Up to 11 I/O pins and 1 input only pin:
- High current sink/source 25 mA/25 mA
- Programmable weak pull-ups
- Programmable interrupt-on-change pins
• Timer0: 8-Bit Timer/Counter with 8-Bit Prescaler
• Enhanced Timer1:
- 16-bit timer/counter with prescaler
- External Gate Input mode
- Dedicated, low-power 32 kHz oscillator driver
• Timer2: 8-Bit Timer/Counter with 8-Bit Period Register, Prescaler and Postscaler
• Enhanced CCP (ECCP) modules:
- Software selectable time bases
- Auto-shutdown and auto-restart
- PWM steering
• Master Synchronous Serial Port (MSSP) with SPI and I2C with:
- 7-bit address masking
- SMBus/PMBus compatibility
• Enhanced Universal Synchronous Asynchronous Receiver Transmitter (EUSART) module:
- RS-232, RS-485 and LIN compatible
- Auto-Baud Detect
• mTouch™ Sensing oscillator module:
- Up to 8 input channels

Peripheral Features (Continued):
• Data Signal Modulator module
- Selectable modulator and carrier sources
• SR Latch:
- Multiple Set/Reset input options
- Emulates 555 Timer applications