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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 memoryFlexible 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-upSpecial 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 modePIC16LF1902/3 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, typicalAnalog 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 levelsPeripheral 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 -
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