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