PIC16LF628A-I/P - 8-Bit 20MHz Flash MCU 3.5KB | Microchip
N.º de pieza: PIC16LF628A-I/P ✓ Activo| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $2.95 | $2,95 |
| 10 | $2.62 | $26,20 |
| 100 | $2.3 | $230,00 |
| 500 | $2.05 | $1.025,00 |
| 1.000 | $1.84 | $1.840,00 |
PIC16LF628A-I/P Descripción general
An 8-bit microcontroller (MCU) is a small computing system on a single integrated circuit that integrates a CPU, RAM, Flash program memory, EEPROM, timers, and peripherals such as ADC, UART, and GPIO. PIC microcontrollers follow the RISC (Reduced Instruction Set Computer) philosophy with only 35 single-word instructions, simplifying code generation in assembly or C (XC8). The PIC16 family sits between the baseline PIC10/12/16 series and the enhanced PIC18/dsPIC families in the Microchip 8-bit hierarchy, making it a workhorse for cost-sensitive embedded designs.
Key features include 16 digital I/O pins capable of driving LEDs directly, two analog comparators with programmable on-chip reference, a USART module for serial communication, capture/compare/PWM (CCP) modules, and three timers (Timer0, Timer1, Timer2). The internal 4 MHz oscillator eliminates the need for an external crystal in many designs, while the internal 48 kHz LF oscillator enables the nanoWatt sleep modes drawing only nA-level standby current.
Architecturally, the PIC16LF628A uses a Harvard bus structure with separate code and data paths, a 14-bit instruction word, and 8-bit data paths. The 'LF' variant supports the wide 2.0V to 5.5V operating range needed for battery-powered designs, distinguishing it from the PIC16F628A which is specified 2.0V to 5.5V with different Flash endurance and voltage characteristics. The part is fully software- and pin-compatible with the PIC16F628A, the PIC16C62XA, the PIC16C5X, and the PIC12CXXX families.
Typical applications include appliance controls, hobby and educational projects, sensor signal conditioning, low-power remote controls, automotive body electronics, and any cost-sensitive embedded node requiring Flash reprogrammability. Designers choose it when 14-bit PIC instruction set familiarity, broad third-party tool support, and wide memory headroom for firmware updates matter.
When designing, ensure the MCLR pin is pulled high through a 10 kohm resistor for normal run mode and consider using the internal oscillator with a 100 nF decoupling capacitor at VDD to suppress digital switching noise from corrupting the analog comparator reference. The CCP and USART peripherals share pins in some configurations, so re-read the pin allocation table before committing to a board layout.
This page synthesizes distributor pricing, a same-package alternative matrix, and practical design notes not found in the manufacturer datasheet, giving an engineer a one-stop decision tree for selecting, sourcing, or replacing the PIC16LF628A-I/P.
Alternativas directas para PIC16LF628A-I/P — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Variantes de esta serie
Modelos de la misma serie compatibles directamente con PIC16LF628A-I/P (mismo factor de forma y huella) — difiere en Package, Internal Oscillator, Core Architecture, Operating Temperature, Mounting Type.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
PIC16F628A-I/P
✅ Sustitución directa✓ En stock
$1.62 / unidad
Ver hoja de datos →PIC16LF627A-I/P
✅ Sustitución directa✓ En stock
$2 / unidad
Ver hoja de datos →PIC16LF627-04I/P
✅ Sustitución directa✓ En stock
$1.23 / unidad
Ver hoja de datos →PIC16LF628-04I/P
✅ Sustitución directa✓ En stock
$1.95 / unidad
Ver hoja de datos →PIC16F627A-I/P
✅ Sustitución directa ⚠️ Especificaciones sin verificar✓ En stock
$1.72 / unidad
Ver hoja de datos →PIC16LF628A-I/P Valores máximos y características eléctricas
| Core Architecture | 8-bit PIC RISC |
| Instruction Set | 35 single-word instructions |
| Program Memory | 3.5 KB Flash (2K x 14) |
| SRAM | 224 bytes |
| EEPROM Data Memory | 128 bytes |
| Frecuencia de reloj máxima | 20 MHz |
| Instruction Cycle Time | 200 ns |
| Supply Voltage (Vdd) | 2.0 V to 5.5 V |
| I/O Pins | 16 |
| Timers | 3 (Timer0, Timer1, Timer2) |
| Analog Comparators | 2 with programmable reference |
| Communication Modules | USART, CCP |
| Internal Oscillator | 4 MHz (software selectable) |
| Encapsulado | 18-pin PDIP (0.300 inch, 7.62mm) |
| Tipo de montaje | Through-Hole |
| Temperatura de funcionamiento | -40 C to +85 C (Industrial) |
| Estado RoHS | Compliant |
Configuración de pines de PIC16LF628A-I/P
| Pin 1 | RA2/AN2/VREF — Port A bit 2 / analog channel 2 / voltage reference |
| Pin 2 | RA3/AN3/CMP1 — Port A bit 3 / analog channel 3 / comparator 1 output |
| Pin 3 | RA4/TOCKI/CMP2 — Port A bit 4 / Timer0 clock input / comparator 2 output |
| Pin 4 | RA5/MCLR/VPP — Port A bit 5 / Master Clear (reset) / programming voltage |
| Pin 5 | VSS — Ground reference |
| Pin 6 | RB0/INT — Port B bit 0 / external interrupt |
| Pin 7 | RB1/RX/DT — Port B bit 1 / USART RX / data |
| Pin 8 | RB2/TX/CK — Port B bit 2 / USART TX / clock |
| Pin 9 | RB3/CCP1 — Port B bit 3 / Capture/Compare/PWM 1 |
| Pin 10 | RB4 — Port B bit 4 |
| Pin 11 | RB5 — Port B bit 5 |
| Pin 12 | RB6/T1OSO/T1CKI — Port B bit 6 / Timer1 oscillator output / Timer1 clock input |
| Pin 13 | RB7/T1OSI — Port B bit 7 / Timer1 oscillator input |
| Pin 14 | VDD — Positive supply voltage |
| Pin 15 | OSC2/CLKOUT — Oscillator output / clock out (crystal mode) |
| Pin 16 | OSC1/CLKIN — Oscillator input / clock in (crystal or external clock mode) |
| Pin 17 | RA0/AN0 — Port A bit 0 / analog channel 0 |
| Pin 18 | RA1/AN1 — Port A bit 1 / analog channel 1 |
Aplicaciones típicas
PIC16LF628A-I/P es adecuado para 6 aplicacións: Appliance Control Boards, Hobby and Educational Projects, Low-Power Remote Controls, Sensor Signal Conditioning, Automotive Body Electronics, Cost-Sensitive Embedded Node.
Appliance Control Boards
The PIC16LF628A-I/P fits appliance control boards that need a small Flash MCU with 16 GPIO driving relays, triacs, and LED indicators. Its 20 MHz instruction cycle and 200 ns response time are fast enough for mains-zero-crossing detection and PWM-driven valve/door-lock control loops. The internal 4 MHz oscillator saves the BOM cost of a crystal in washing machines, dishwashers, and microwave ovens. Wide 2.0-5.5V operation lets the same firmware run on 3.3V logic or 5V relay-driver rails. Combined with the 128-byte EEPROM for run-hour counters and the nanoWatt sleep mode for standby compliance, the PIC16LF628A-I/P is a workhorse for white-goods MCU designs.
Recomendado
Hobby and Educational Projects
The PIC16LF628A-I/P is a classic choice for hobbyist and university microcontroller courses because of its breadboard-friendly 0.300 inch PDIP-18 footprint and 5V-tolerant GPIO. The 3.5 KB Flash fits textbook-sized projects in assembly or XC8 C with the PICkit programmer. The 16 GPIO can drive LEDs, buttons, LCD character displays, and simple sensors without external glue logic. Internal comparators support a single-chip analog threshold detector and the internal 4 MHz oscillator removes crystal-cost barriers for student labs. Tens of thousands of hobbyist tutorials and code examples exist for the PIC16F628A family, easing the learning curve.
Recomendado
Low-Power Remote Controls
The PIC16LF628A-I/P serves battery-powered remote controls with sub-uA nanoWatt sleep current that lets a coin-cell last for years. The internal 48 kHz LF oscillator and Timer1 can wake the chip on a key-press interrupt, transmit via an external OOK/FSK transmitter, then return to sleep. With 16 GPIO, the part scans a 4x4 keypad matrix directly and drives an LED activity indicator. The wide 2.0-5.5V supply covers CR2032, 2x AA, and Li-ion rechargeable cells. The 128-byte EEPROM stores user preferences and pairing codes across battery swaps.
Recomendado
Sensor Signal Conditioning
The PIC16LF628A-I/P conditions analog sensor outputs by combining its two on-chip comparators with a programmable voltage reference to threshold temperature, light, or position sensors without external op-amps. The CCP module generates PWM excitation for resistive sensors such as thermistors and bridge strain gauges, while the USART streams conditioned data to a host controller. The 8-bit core and 224-byte SRAM are sufficient for moving-average filtering and alarm hysteresis. The internal 4 MHz oscillator simplifies sensor modules that have to fit in a small enclosure.
Recomendado
Automotive Body Electronics
The PIC16LF628A-I/P handles automotive body-electronics nodes such as door-lock controllers, mirror adjusters, and interior lighting dimmers where 16 GPIO and PWM-controlled current drive replace discrete logic. The industrial temperature grade (-40C to +85C) tolerates cabin thermal extremes per Microchip DS41191G. The internal 4 MHz oscillator and nanoWatt sleep support CAN-transceiver-equipped modules that need microamp standby draw for parked-car battery survival. The PIC16LF628A is automotive-pedigree with mature firmware libraries for seat-controller and lighting applications.
Recomendado
Cost-Sensitive Embedded Node
The PIC16LF628A-I/P is the right choice when a microcontroller is needed at minimum BOM cost with proven tooling and 3.5 KB Flash for over-the-air-style firmware updates. It replaces discrete 74HC logic by integrating timers, comparators, USART, and PWM in a single 18-pin chip. The PDIP package supports hand-soldering and rework for prototype runs under 1000 units. Designers migrating from PIC16C5X gain a 14-bit core with the same pinout family and the same free MPLAB X / XC8 toolchain. The combination of low unit cost, mature firmware libraries, and nanoWatt standby is hard to match at this footprint.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para PIC16LF628A-I/P — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | PIC16F628A-I/P | PIC16LF627A-I/P | PIC16LF627-04I/P | PIC16LF628-04I/P |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | PDIP-18 (0.300 inch) | PDIP-18 - same | PDIP-18 - same | PDIP-18 - same | PDIP-18 - same |
| Program Memory | 3.5 KB Flash (2K x 14) | 3.5 KB Flash | 1.75 KB Flash (1K x 14) | 1.75 KB Flash (1K x 14) | 3.5 KB Flash (2K x 14) |
| SRAM | 224 bytes | 224 bytes | 128 bytes | 128 bytes | 224 bytes |
| EEPROM | 128 bytes | 128 bytes | 128 bytes | 128 bytes | 128 bytes |
| Maximum Clock | 20 MHz | 20 MHz | 20 MHz | 4 MHz | 4 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 |
| I/O Pins | 16 | 16 | 16 | 16 | 16 |
| nanoWatt Technology | Yes (LF silicon) | Yes (F silicon, equivalent low-power) | Yes (LF silicon) | Yes (LF silicon) | Yes (LF silicon) |
| Internal Oscillator | 4 MHz | 4 MHz | 4 MHz | 4 MHz | 4 MHz |
Diferenciadores clave
- Wide 2.0V to 5.5V operating range with nanoWatt sleep technology (frente a PIC16F628A-I/P)
- Larger 3.5 KB Flash with full peripheral set (frente a PIC16LF627A-I/P)
- 20 MHz full-speed operation (frente a PIC16LF627-04I/P)
Notas de diseño
Estimated: at VDD=5 V and 20 MHz external oscillator, the PIC16LF628A-I/P draws approximately 11 mA active and 1-100 uA in sleep modes per DS41191G. Place a 100 nF ceramic decoupling capacitor as close as practical to the VDD pin, and add a bulk 10 uF tantalum or aluminum polymer capacitor on the same rail. For battery-powered designs, switch the system clock to the internal 4 MHz oscillator to drop active current to roughly 2 mA. The PIC16LF628A LF silicon typically achieves sub-uA sleep currents at room temperature, supporting multi-year coin-cell battery life.
Route the MCLR pin with a 10 kohm pull-up resistor to VDD and place a 100 nF capacitor to ground for noise immunity. When using an external crystal, keep the OSC1/OSC2 traces short (<10 mm) and surround them with a grounded guard ring to avoid injecting digital switching noise into the oscillator. When using the internal oscillator, OSC1 and OSC2 pins can be reassigned as RA7/RB6 general-purpose I/O if you avoid CONFIG setting FOSC = LP/XT/HS. Always place a 100 nF decoupling cap immediately adjacent to the VDD pin.
Do not omit the MCLR pull-up resistor: without it, the PIC16LF628A-I/P can randomly enter reset during supply transients. Do not drive the MCLR pin with a logic-level signal from a high-impedance source. When migrating firmware from PIC16F84 to PIC16LF628A, double-check the interrupt vector address (0x0004) and the GPIO initialization sequence because the port registers moved from PORTA/PORTB naming to TRISA/TRISB with analog/digital configuration. Verify CONFIG bits match the oscillator and watchdog settings before locking the code; an accidental WDT enabled at 18 ms can hang your application.
Información de cumplimiento
RoHS compliant per Microchip product page. Not AEC-Q100 qualified; for automotive designs requiring qualification, choose PIC16F628A-I/P or a higher-tier PIC MCU.
