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LButtonDEVICE OVERVIEW

The PIC16LF1902/3 are described within this data sheet. They are available in 28-pin packages. Figure 1-1 shows a block diagram of the PIC16LF1902/3 devices. Table 1-2 shows the pinout descriptions.

Reference Table 1-1 for peripherals available per device.

High-Performance RISC CPU:

? C Compiler Optimized Architecture

? Only 49 Instructions

? Up to 7 Kbytes Self-Write/Read Flash Program Memory Addressing

? Up to 256 Bytes Data Memory Addressing

? Operating Speed:

- DC – 20 MHz clock input @ 3.6V

- DC – 16 MHz clock input @ 1.8V

- DC – 200 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:

? 16 MHz Internal Oscillator:

- Accurate to ±10, typical

- Software selectable frequency range from 16 MHz to 31.25 kHz

? 31 kHz Low-Power Internal Oscillator

? Three External Clock modes up to 20 MHz

? Two-Speed Oscillator Start-up

Special Microcontroller Features:

? Operating Voltage Range:

- 1.8V-3.6V

? Self-Programmable under Software Control

? Power-on Reset (POR)

? Power-up Timer (PWRT)

? Ultra Low-Power Brown-Out Reset (ULPBOR)

? Extended Watchdog Timer (WDT)

? In-Circuit Serial Programming? (ICSP?) via Two Pins

? In-Circuit Debug (ICD) via Two Pins

? Enhanced Low-Voltage Programming (LVP)

? Programmable Code Protection

? Power-Saving Sleep mode

PIC16LF1902/3 Low-Power Features:

? Standby Current:

- 60 nA @ 1.8V, typical

? Operating Current:

- 7.0 μA @ 32 kHz,1.8V, typical

- 150 μA @ 1 MHz, 1.8V, typical

? Timer1 Oscillator Current:

- 600 nA @ 32 kHz, 1.8V, typical

? Low-Power Watchdog Timer Current:

- 500 nA @ 1.8V, typical

Analog Features:

? Analog-to-Digital Converter (ADC):

- 10-bit resolution, up to 11 channels

- Conversion available during Sleep

- Dedicated ADC RC oscillator

- Fixed Voltage Reference (FVR) as channel

? Integrated Temperature Indicator

? Voltage Reference module:

- Fixed Voltage Reference (FVR) with 1.024V and 2.048V output levels

Peripheral Highlights:

? Up to 25 I/O Pins and 1 Input-only Pin:

- High current 25 mA sink/source

- Individually programmable weak pull-ups

- Individually programmable interrupt-on change (IOC) pins

? Integrated LCD Controller:

- 19 segment pins and 72 total segments

- Variable clock input

- Contrast control

- Internal voltage reference selections

? Timer0: 8-Bit Timer/Counter with 8-Bit Programmable Prescaler

? Enhanced Timer1:

- 16-bit timer/counter with prescaler

- External Gate Input mode

- Dedicated low-power 32 kHz oscillator driver