Description
The PIC16LF1554/1559 microcontrollers with Microchip enhanced mid-range core deliver unique on-chip features for
the design of mTouch® solutions and general purpose applications in 14/20-pin count packages. Two 10-bit
high-speed ADCs with automated hardware CVD modules connect to up to 17 analog channels to achieve a total
sampling rate of 600k samples per second. Combined with two PWMs and multiple communication peripherals, this
microcontroller family is an excellent solution to implement low-power and noise-robust capacitive sensing and other
front-end sampling applications with minimal software overhead.

Special Microcontroller Features
• Precision 16 MHz Internal Oscillator:
- Factory calibrated to ±1%, typical
- Software selectable frequency range from
32 MHz to 31 kHz
• 31 kHz Low-Power Internal Oscillator
• 4x Phase-Locked Loop (PLL)
• Power-Saving Sleep mode
• Power-on Reset (POR)
• Power-up Timer (PWRT)
• BOR with Selectable Trip Point
• Low-Power Brown-Out Reset (LPBOR)
• 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 to 3.6V
• Programmable Code Protection
• Self-Programmable under Software Control
eXtreme Low Power (XLP) Features
• Sleep Current:
- 30 nA @ 1.8V, typical
• Operating Current:
- 75 A @ 1 MHz, 1.8V, typical
• Low-Power Watchdog Timer Current:
- 500 nA @ 1.8V, typical
Peripheral Features
• Up to 17 I/O Pins and One Input-only Pin:
- High current sink/source for LED drivers
- Individually programmable interrupt-onchange
pins
- Individually programmable weak pull-ups
• Timer0: 8-Bit Timer/Counter with 8-Bit
Programmable Prescaler
• Enhanced Timer1:
- 16-bit timer/counter with prescaler
- External Gate Input mode
• Timer2 modules: 8-Bit Timer/Counter with 8-Bit
Period Register, Prescaler and Postscaler
• Two PWM modules
• Two Analog-to-Digital Converters (ADC):
- 10-bit resolution
- Up to 17 channels
- Simultaneous sampling on two ADCs
- Connect multiple channels together for
sampling
- External conversion trigger
- Flexible analog channel selection
- Conversion during Sleep
- Fixed Voltage Reference as channel
- External pin as ADC positive reference
- Temp sensor channel input
• Voltage Reference module:
- Fixed Voltage Reference (FVR) with 1.024V
and 2.048V output levels
• Hardware Capacitive Voltage Divider (CVD):
- Double-sample conversions
- Two sets of result registers
- Inverted acquisition
- 7-bit precharge timer
- 7-bit acquisition timer
- Two guard ring output drives
- 30 pF adjustable sample and hold capacitor
array
• Master Synchronous Serial Port (MSSP) with SPI
and I2C with:
- 7-bit address masking
- SMBus/PMBus™ compatibility
• Enhanced Universal Synchronous Asynchronous
Receiver Transmitter (EUSART):
- RS-232, RS-485 and LIN compatible
- Auto-Baud Detect
- Auto-wake-up on start