PIC16LF819-I/SSTSL - 8-bit MCU, 3.5KB Flash, 16 I/O | Microchip
Référence : PIC16LF819-I/SSTSL ✓ Actif| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $3.2 | $3,20 |
| 10 | $2.88 | $28,80 |
| 100 | $2.55 | $255,00 |
| 500 | $2.25 | $1 125,00 |
| 1 000 | $2 | $2 000,00 |
PIC16LF819-I/SSTSL Présentation
Key features include an internal oscillator, a 10-bit Analog-to-Digital Converter (ADC) with up to 5 channels, one Capture/Compare/PWM (CCP) module, a synchronous serial port (SSP) supporting SPI and I2C, and a USART for asynchronous serial communication. The device also integrates a 256-byte EEPROM data area, two 8-bit timers plus one 16-bit timer, and a watchdog timer for safety-critical applications.
The PIC16LF819 belongs to the mid-range PIC16 family, a category of 8-bit Harvard-architecture RISC microcontrollers known for their deterministic instruction set, single-cycle execution at the system clock rate, and rich peripheral integration. PIC16 mid-range MCUs are widely used in cost-sensitive embedded designs that need more capability than 8-bit baseline parts but don't justify moving to 16-bit dsPIC or 32-bit ARM Cortex devices.
The architecture combines a 14-bit instruction word with separate program and data buses, allowing simultaneous access and yielding throughput close to one instruction per clock cycle. The 20-pin SSOP package offers a small footprint suitable for compact products while preserving enough I/O for typical mixed-signal interfacing tasks.
Typical applications include consumer white goods and small appliances, low-cost sensor conditioning boards, battery-powered instrumentation, simple motor-control loops using the CCP/PWM module, and user-interface controllers in industrial equipment. The on-chip ADC and PWM make it well-suited to closed-loop LED lighting and thermostat-style control loops.
When designing with this device, pay attention to the LF voltage range (2.0V to 5.5V) versus the standard PIC16F819 (2.0V to 5.5V), confirm oscillator configuration in the configuration words, and ensure the ICD pins are reserved if in-circuit debugging is required. The SSOP-20 footprint is also available in tape-and-reel packaging for high-volume assembly.
This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes - complementary context not always present on the manufacturer datasheet alone.
Alternatives de remplacement direct pour PIC16LF819-I/SSTSL — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Variantes de cette série
Modèles de la même série directement compatibles avec PIC16LF819-I/SSTSL (même facteur de forme et même empreinte) — différant par Package, Internal Oscillator, Program Memory (Flash), Operating Temperature, Timers.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
PIC16LF819-I/SS
✅ Remplacement direct✓ En stock
$1.74 / unité
Voir la fiche technique →PIC16LF819T-I/SSTSL
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
PIC16LF818-I/SSTSL
✅ Remplacement direct✓ En stock
$2.05 / unité
Voir la fiche technique →PIC16LF819-I/SOTSL
✅ Remplacement direct✓ En stock
$3.75 / unité
Voir la fiche technique →PIC16LF818T-I/SSTSL
✅ Remplacement direct✓ En stock
$1.6 / unité
Voir la fiche technique →PIC16LF819-I/SSTSL Valeurs maximales et caractéristiques électriques
| Core Architecture | 8-bit PIC mid-range (Harvard, RISC) |
| Program Memory (Flash) | 3.5 KB (2K x 14 words) |
| Data SRAM | 256 bytes |
| Data EEPROM | 256 bytes |
| Maximum CPU Clock | 10 MHz |
| Supply Voltage (VDD) | 2.0 V to 5.5 V |
| Number of I/O Pins | 16 |
| ADC | 10-bit, up to 5 channels |
| Timers | 2 x 8-bit + 1 x 16-bit |
| CCP/PWM Modules | 1 |
| Serial Interfaces | SSP (SPI / I2C), USART (async) |
| Oscillator | Internal + external crystal options |
| Watchdog Timer | Yes |
| Boîtier | 20-pin SSOP |
| Température de fonctionnement | -40 C to +85 C (industrial) |
| Instruction Set Width | 14 bits |
| Statut RoHS | Compliant |
Configuration des broches de PIC16LF819-I/SSTSL
| Broche 1 | RA2/AN2/CVREF/VREF- — Port A bit 2 / ADC input 2 / CVREF reference / VREF- |
| Broche 2 | RA3/AN3/VREF+ — Port A bit 3 / ADC input 3 / VREF+ |
| Broche 3 | RA4/AN4/T0CKI — Port A bit 4 / ADC input 4 / Timer0 clock input |
| Broche 4 | RA5/MCLR/VPP — Port A bit 5 / Master Clear (reset) / Programming voltage |
| Broche 5 | VSS — Ground |
| Broche 6 | RB0/INT/CCP1 — Port B bit 0 / External interrupt / CCP1 PWM output |
| Broche 7 | RB1 — Port B bit 1 |
| Broche 8 | RB2 — Port B bit 2 |
| Broche 9 | RB3/PGM — Port B bit 3 / Low-voltage programming |
| Broche 10 | RB4/SCK/SCL — Port B bit 4 / SPI clock / I2C clock |
| Broche 11 | RB5/SDI/SDA — Port B bit 5 / SPI data in / I2C data |
| Broche 12 | RB6/ICSPCLK — Port B bit 6 / In-circuit serial programming clock |
| Broche 13 | RB7/ICSPDAT — Port B bit 7 / In-circuit serial programming data |
| Broche 14 | VDD — Positive supply (2.0 V to 5.5 V) |
| Broche 15 | OSC2/CLKOUT/RA6 — Oscillator output / Clock output / Port A bit 6 |
| Broche 16 | OSC1/CLKIN/RA7 — Oscillator input / Clock input / Port A bit 7 |
| Broche 17 | RC0/T1OSO/T1CKI — Port C bit 0 / Timer1 oscillator out / Timer1 clock in |
| Broche 18 | RC1/T1OSI/CCP2 — Port C bit 1 / Timer1 oscillator in / CCP2 |
| Broche 19 | RC2/CCP1 — Port C bit 2 / CCP1 PWM output |
| Broche 20 | RC3 — Port C bit 3 |
Applications typiques
PIC16LF819-I/SSTSL convient pour 6 applications: Battery-Powered Sensor Conditioning, Small Appliance and White-Goods Control, LED Lighting and Dimming Controllers, Industrial Sensor and Process-Loop Interfaces, User-Interface and HMI Front Panels, Automotive Interior and Accessory Modules.
Battery-Powered Sensor Conditioning
The PIC16LF819-I/SSTSL's 2.0V to 5.5V wide supply range lets it run directly from two-cell alkaline or three-cell NiMH battery stacks without a regulator, and its 10-bit 5-channel ADC digitizes thermistor, photodiode, or strain-gauge signals on a single chip. The PIC mid-range core executes a single instruction per clock cycle, keeping active-mode current low enough that duty-cycled sampling extends battery life into multi-year ranges. Using the internal oscillator eliminates external crystal cost and the low-power Sleep mode further reduces quiescent draw between measurements.
Recommandé
Small Appliance and White-Goods Control
Consumer appliances such as coffee machines, microwave ovens, and washing machines need an inexpensive 8-bit MCU with PWM for motor or heater control and ADC for temperature sensing - exactly the PIC16LF819-I/SSTSL feature set. The CCP/PWM module drives a TRIAC or MOSFET power stage for heating-element control, while the ADC reads NTC thermistor feedback for closed-loop regulation. The 20-pin SSOP package fits inside compact product enclosures and the industrial temperature grade supports kitchen and laundry environments.
Recommandé
LED Lighting and Dimming Controllers
The PIC16LF819-I/SSTSL drives constant-current LED strings via its CCP/PWM output and regulates brightness from a potentiometer or ambient-light sensor input on the 10-bit ADC. PWM frequencies up to several kHz avoid flicker while allowing smooth dimming, and the SSP module can interface to digital LED driver ICs or DMX-style lighting control buses. The wide VDD range supports both 3.3V logic-level designs and 5V analog dimmer interfaces.
Recommandé
Industrial Sensor and Process-Loop Interfaces
Industrial 4-20 mA loop-powered transmitters and remote sensor nodes use the PIC16LF819-I/SSTSL for signal conditioning, linearization, and digital communication over RS-485 or I2C. The 10-bit ADC digitizes bridge, RTD, or thermocouple signals, while the integrated USART supports Modbus RTU or proprietary protocols. The 2.0V minimum supply enables operation from loop-powered or energy-harvesting rails.
Recommandé
User-Interface and HMI Front Panels
Low-cost HMI panels with push-buttons, rotary encoders, and character LCDs use the PIC16LF819-I/SSTSL to scan key matrices, drive displays, and communicate with a host controller over SPI or USART. Sixteen I/O pins support up to 16 buttons or 8 multiplexed 7-segment digits, and the SSP module streams display updates to companion driver ICs. The internal oscillator removes external timing components.
Recommandé
Automotive Interior and Accessory Modules
Body-electronics accessories such as ambient lighting, seat heaters, mirror controllers, and auxiliary displays can use the PIC16LF819-I/SSTSL for cost-sensitive sub-modules where AEC-Q100 qualification is delegated to a system-level gateway. The CCP/PWM controls LED drivers or small DC motors, the ADC reads trim switches and temperature sensors, and the USART/SSP links the module to a CAN or LIN transceiver via SPI. The industrial -40C to +85C temperature range covers most cabin environments.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour PIC16LF819-I/SSTSL — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | PIC16LF819-I/SS | PIC16LF819T-I/SSTSL | PIC16LF818-I/SSTSL | PIC16LF819-I/SOTSL | PIC16LF818T-I/SSTSL |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 20-pin SSOP | 20-pin SSOP (same) | 20-pin SSOP (same) | 20-pin SSOP (same) | 20-pin SSOP (same) | 20-pin SSOP (same) |
| Program Memory (Flash) | 3.5 KB (2K x 14) | 3.5 KB (2K x 14) | 3.5 KB (2K x 14) | 1.75 KB (1K x 14) | 3.5 KB (2K x 14) | 1.75 KB (1K x 14) |
| Data SRAM | 256 B | 256 B | 256 B | 256 B | 256 B | 256 B |
| Data EEPROM | 256 B | 256 B | 256 B | 128 B | 256 B | 128 B |
| Maximum CPU Clock | 10 MHz | 10 MHz | 10 MHz | 10 MHz | 10 MHz | 10 MHz |
| Supply Voltage | 2.0 V to 5.5 V | 2.0 V to 5.5 V | 2.0 V to 5.5 V | 2.0 V to 5.5 V | 2.0 V to 5.5 V | 2.0 V to 5.5 V |
| ADC Resolution / Channels | 10-bit / 5 ch | 10-bit / 5 ch | 10-bit / 5 ch | 10-bit / 5 ch | 10-bit / 5 ch | 10-bit / 5 ch |
Principaux différenciateurs
- Identical SSOP-20 footprint and electrical specs as PIC16LF819-I/SS (vs PIC16LF819-I/SS)
- Larger Flash and EEPROM than PIC16LF818 family (vs PIC16LF818-I/SSTSL)
- Wide 2.0 V to 5.5 V supply vs typical 5 V-only mid-range PICs (vs PIC16F819 (non-LF))
Notes de conception
The PIC16LF819-I/SSTSL operates from 2.0 V to 5.5 V and supports Sleep mode with wake-up on interrupt. Estimated: at 4 MHz internal oscillator and 5 V supply, active current is approximately 0.5 mA per datasheet; Sleep current drops below 1 uA. Add a 100 nF ceramic decoupling capacitor close to VDD and a 10 uF bulk capacitor if the supply source has any impedance.
The 20-pin SSOP package has a 0.65 mm pin pitch. Reserve the PGD (RB7) and PGC (RB6) pins for in-circuit serial programming (ICSP) - do not strap them directly to VDD or GND through low-impedance paths. Place the ICSP connector footprint at the board edge or in an accessible test-pad area to simplify programming and debugging with PICkit or MPLAB ICD tools.
Configuration-word settings (oscillator source, watchdog timer enable, brown-out reset threshold, code protection) must be set explicitly - the device does not default to safe values for all applications. Estimated: failure to enable the internal oscillator correctly is the most common reason for 'dead' PIC16LF819 prototypes. Always read the configuration bits in code and verify with MPLAB X IDE before programming production parts.
Informations de conformité
RoHS and lead-free compliant per Microchip product page. Not AEC-Q100 qualified; for automotive designs, choose AEC-Q100-qualified PIC16F counterparts or system-level qualification through a gateway ECU.
