PIC16LC620T-04/SO - 4MHz 8-Bit OTP MCU 18-SOIC | Microchip
N.º de pieza: PIC16LC620T-04/SO ✓ Activo| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $2.85 | $2,85 |
| 10 | $2.56 | $25,60 |
| 100 | $2.28 | $228,00 |
| 500 | $2.04 | $1.020,00 |
| 1.000 | $1.82 | $1.820,00 |
PIC16LC620T-04/SO Descripción general
An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, program memory (ROM/OTP/Flash), data RAM, and peripheral interfaces on one silicon die. Within the semiconductor hierarchy, MCUs sit inside the broader category of microprocessors and embedded controllers, and the PIC16LC620 belongs specifically to Microchip's PIC16 mid-range family - one of the industry's most widely deployed 8-bit architectures. The 'LC' suffix indicates the low-voltage CMOS process variant optimized for 2.5V-6.25V operation, drawing less current than the standard 'C' parts while supporting battery-powered and portable designs.
Key features include a 4 MHz oscillator, 13 general-purpose I/O pins, a two-level deep hardware stack, and seven or eight special function registers. The PIC16C core uses a RISC instruction set with only 35 single-word instructions, most executing in a single instruction cycle (4 oscillator clocks), giving an effective 1 MIPS throughput at 4 MHz. Addressing modes include direct, indirect, and relative, with on-chip peripherals including a comparator, 8-bit timer/counter, and watchdog timer.
Typical applications include low-cost consumer appliances, automotive body electronics, industrial control subsystems, sensor signal conditioning, and legacy embedded products that require a stable, mature 8-bit MCU with mask-ROM-style code protection. The wide 2.5V-6.25V supply range allows direct operation from a 3.3V regulated rail or a multi-cell battery pack.
When designing with this device, note that OTP memory can be programmed only once - for prototyping use PIC16LC620-04/SO (windowed EPROM) or the flash-based PIC16F628 successor. The 'T' suffix indicates tape-and-reel packaging for high-volume SMT assembly, and the '04' speed grade specifies the 4 MHz maximum clock.
This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes not found in the standalone manufacturer datasheet, helping engineers and procurement teams evaluate sourcing options for legacy PIC16 designs.
Alternativas directas para PIC16LC620T-04/SO — 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 PIC16LC620T-04/SO (mismo factor de forma y huella) — difiere en Operating Temperature Range, Package, Program Memory Size, Program Memory Type, Core Architecture.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
PIC16LC620AT-04I/SO
✅ Sustitución directa✓ En stock
$1.62 / unidad
Ver hoja de datos →PIC16LC620AT-04E/SO
✅ Sustitución directa✓ En stock
$2.25 / unidad
Ver hoja de datos →PIC16LC620A-04I/SO
✅ Sustitución directa✓ En stock
$3.96 / unidad
Ver hoja de datos →PIC16LC620A-04E/SO
✅ Sustitución directa✓ En stock
$2.07 / unidad
Ver hoja de datos →PIC16LC620A-04/SO
✅ Sustitución directa✓ En stock
$2.15 / unidad
Ver hoja de datos →PIC16LC620-04/SO
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
PIC16LC620T-04/SO Valores máximos y características eléctricas
| Core Architecture | PIC16C 8-bit RISC |
| Program Memory Type | OTP (One-Time Programmable) |
| Program Memory Size | 896 B (512 x 14 words) |
| Maximum Clock Speed | 4 MHz |
| Supply Voltage Range | 2.5 V to 6.25 V |
| Instruction Word Width | 12-bit |
| Data Path Width | 8-bit |
| Number of I/O Pins | 12 to 13 |
| Hardware Stack Depth | 2 levels |
| Special Function Registers | 7 to 8 |
| Package Type | 18-SOIC (0.300 inch body, plastic) |
| Tipo de montaje | Surface Mount |
| Terminal Form | Gull Wing |
| Temperature Grade | Commercial |
| Rango de temperatura de funcionamiento | 0C to +70C (commercial grade) |
| Process Technology | CMOS |
Configuración de pines de PIC16LC620T-04/SO
| Pin 1 | MCLR — Master clear (reset) input, active low |
| Pin 2 | RA0 — PORTA bit 0, digital I/O |
| Pin 3 | RA1 — PORTA bit 1, digital I/O |
| Pin 4 | RA2 — PORTA bit 2, digital I/O |
| Pin 5 | RA3 — PORTA bit 3, digital I/O |
| Pin 6 | RA4 — PORTA bit 4, digital I/O / T0CKI |
| Pin 7 | VSS — Ground reference |
| Pin 8 | RB0 — PORTB bit 0, digital I/O / INT |
| Pin 9 | RB1 — PORTB bit 1, digital I/O |
| Pin 10 | RB2 — PORTB bit 2, digital I/O |
| Pin 11 | RB3 — PORTB bit 3, digital I/O |
| Pin 12 | RB4 — PORTB bit 4, digital I/O |
| Pin 13 | RB5 — PORTB bit 5, digital I/O |
| Pin 14 | RB6 — PORTB bit 6, digital I/O |
| Pin 15 | RB7 — PORTB bit 7, digital I/O |
| Pin 16 | VDD — Positive supply voltage |
| Pin 17 | OSC1 — Oscillator input / external clock |
| Pin 18 | OSC2 — Oscillator output / clock out |
Aplicaciones típicas
PIC16LC620T-04/SO es adecuado para 7 aplicacións: Consumer Appliance Control, Automotive Body Electronics, Industrial Sensor Signal Conditioning, Battery-Powered Portable Devices, Legacy Embedded System Replication, Educational Microcontroller Training, Hobby Electronics and Maker Projects.
Consumer Appliance Control
The PIC16LC620T-04/SO's 2.5V-6.25V supply range and 4 MHz PIC16C core make it ideal for low-cost consumer appliance controllers such as coffee makers, microwave oven user interfaces, and small kitchen devices. The 12-13 GPIO pins directly drive LED indicators, 7-segment displays, and relay coils without external buffers, while the 25 mA per-pin sink capability handles solenoid loads directly. Unlike flash MCUs that double the BOM cost, the OTP variant keeps per-unit cost under $2 in volume. The PIC16C instruction set executes single-cycle instructions in 1 us, providing adequate response time for user-interface debouncing and relay sequencing without timing jitter.
Recomendado
Automotive Body Electronics
The PIC16LC620T-04/SO serves automotive body modules including seat controllers, window lift switch interfaces, and interior lighting dimmers in legacy vehicle platforms. Its 12-bit instruction set and 8-bit data path deliver deterministic 1 MIPS throughput at 4 MHz, critical for time-multiplexed switch-scanning and PWM dimming tasks. The on-chip comparator monitors battery voltage thresholds, while the 8-bit timer/counter generates precise PWM dimming waveforms for incandescent bulb replacements. The '04' speed grade matches body-electronics timing requirements without the EMI overhead of faster MCUs, and the commercial temperature grade suits cabin-mounted modules.
Recomendado
Industrial Sensor Signal Conditioning
The PIC16LC620T-04/SO conditions analog sensor signals in industrial 4-20 mA loop transmitters, thermistor linearization circuits, and bridge sensor excitation systems. The on-chip analog comparator with programmable reference provides threshold detection for alarm outputs, while the PIC16C core executes polynomial linearization algorithms in 1 us per instruction. The 2.5V-6.25V supply range allows direct operation from a 3.3V regulated sensor rail or two AA cells in wireless sensor nodes. The 13 GPIO pins handle SPI sensor interfaces, UART diagnostics, and discrete alarm outputs simultaneously.
Recomendado
Battery-Powered Portable Devices
The PIC16LC620T-04/SO powers battery-operated devices such as remote controls, electronic locks, and wireless sensor end nodes where the LC (low-voltage CMOS) variant's sub-2 mA active current and 1 uA sleep current extend battery life into multi-year ranges. Operating from 2.5V allows direct connection to two alkaline or NiMH cells without boost converters. The 4 MHz core provides ample MIPS for IR protocol encoding/decoding (RC5, NEC, SIRC) and AES-light authentication routines. The OTP memory prevents firmware reverse engineering, protecting proprietary protocols in commercial products.
Recomendado
Legacy Embedded System Replication
The PIC16LC620T-04/SO is the exact silicon used in legacy products that must continue manufacturing without PCB redesign. Production lines for discontinued but still-supported industrial controllers, medical monitoring accessories, and military spares often require bit-exact replication of original firmware on the same OTP silicon to maintain regulatory certifications. The drop-in compatible PIC16LC620-04/SO variant (tube packaging) supports low-volume legacy orders, while the tape-and-reel 'T' variant feeds high-volume SMT lines. The OTP memory cannot be read back after programming, preserving proprietary firmware confidentiality required for some legacy certifications.
Recomendado
Educational Microcontroller Training
The PIC16LC620T-04/SO appears in university embedded systems courses and electronics training kits where the PIC16C architecture's 35-instruction RISC set teaches fundamental MCU concepts without the complexity of modern Cortex-M peripherals. The 4 MHz operation allows students to observe instruction cycle timing on oscilloscopes, while the 18-SOIC package through-hole-adapter boards simplifies breadboard prototyping. The OTP memory encourages proper pre-programming verification using PIC16C620-04/SO EPROM-windowed variants, teaching professional firmware validation workflows. The 2.5V-6.25V supply range allows direct USB-5V or 3.3V operation from modern lab power supplies.
Recomendado
Hobby Electronics and Maker Projects
The PIC16LC620T-04/SO supports hobbyist projects requiring code protection such as custom game controllers, MIDI footswitches, and standalone musical instrument controllers where designers want to prevent firmware cloning. The 13 GPIO pins drive NeoPixel data lines, button matrices, and 7-segment displays, while the on-chip comparator handles audio envelope detection. The PIC16C instruction set is well documented in community resources, and Microchip's MPLAB IDE supports the device alongside modern PIC16F successors. The OTP memory requirement pushes makers toward PIC16F628 for iterative development, then PIC16LC620 for final code-locked production units.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para PIC16LC620T-04/SO — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | PIC16LC620AT-04I/SO | PIC16LC620AT-04E/SO | PIC16LC620A-04I/SO | PIC16LC620A-04E/SO | PIC16LC620A-04/SO | PIC16LC620-04/SO |
|---|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 18-SOIC | 18-SOIC - same | 18-SOIC - same | 18-SOIC - same | 18-SOIC - same | 18-SOIC - same | 18-SOIC - same |
| Maximum Clock Speed | 4 MHz | 4 MHz | 4 MHz | 4 MHz | 4 MHz | 4 MHz | 4 MHz |
| Program Memory | 896 B OTP | 896 B OTP | 896 B OTP | 896 B OTP | 896 B OTP | 896 B OTP | 896 B OTP |
| Supply Voltage Range | 2.5 V to 6.25 V | 2.5 V to 6.25 V | 2.5 V to 6.25 V | 2.5 V to 6.25 V | 2.5 V to 6.25 V | 2.5 V to 6.25 V | 2.5 V to 6.25 V |
| Temperature Grade | Commercial | Industrial (-40C to +85C) | Extended (-40C to +125C) | Industrial (-40C to +85C) | Extended (-40C to +125C) | Commercial | Commercial |
| Silicon Revision | Original | 'A' revision (errata fixed) | 'A' revision (errata fixed) | 'A' revision (errata fixed) | 'A' revision (errata fixed) | 'A' revision (errata fixed) | Original |
| Packaging Format | Tape & Reel | Tape & Reel | Tape & Reel | Tube | Tube | Tube | Tube |
| I/O Pin Count | 12 to 13 | 12 to 13 | 12 to 13 | 12 to 13 | 12 to 13 | 12 to 13 | 12 to 13 |
Diferenciadores clave
- OTP code protection for proprietary firmware (frente a PIC16F628-I/SO (flash MCU))
- Low-voltage CMOS operation down to 2.5V (frente a PIC16C620-04/SO (standard CMOS))
- Tape-and-reel packaging for SMT assembly (frente a PIC16LC620-04/SO (tube packaging))
- Single-chip integration reduces BOM (frente a PIC16F628 + external EEPROM)
Notas de diseño
The PIC16LC620T-04/SO operates from 2.5V to 6.25V per the Microchip datasheet, allowing direct connection to a 3.3V regulated rail or a 5V USB supply without level shifting. Add a 100 nF decoupling capacitor as close as possible to the VDD pin (pin 16) and a 10 uF bulk capacitor at the board power entry. The LC variant's sub-2 mA active current and 1 uA sleep current enable multi-year battery life from two AA cells when using sleep modes between sensor readings. Always include a power-on reset delay by holding MCLR low for at least 72 ms after VDD stabilizes to ensure proper oscillator startup.
The PIC16LC620T-04/SO uses One-Time Programmable (OTP) memory that can be written exactly once - there is no erasing or reprogramming capability. Per Microchip documentation, OTP programming requires a high-voltage VPP of approximately 13V on the MCLR pin during the programming sequence, applied only by an approved programmer such as MPLAB PM3. For development and prototyping, use the PIC16C620-04/SO (EPROM windowed) variant or migrate to the flash-based PIC16F628-I/SO drop-in replacement. Programming the original (non-'A' revision) silicon requires checking silicon errata DS30244 for known comparator output routing issues.
Place the 18-SOIC PIC16LC620T-04/SO with pin 1 oriented to match the dot marker on the package, and keep the 4 MHz crystal or resonator within 10 mm of the OSC1 (pin 17) and OSC2 (pin 18) pins to minimize parasitic capacitance. Use short, direct traces for the MCLR pull-up resistor (typically 10 kOhm to VDD) to ensure clean reset behavior. Per Microchip layout guidelines, surround the crystal traces with a ground guard ring and keep digital switching traces away from the OSC1/OSC2 pins to prevent clock jitter. RB6 and RB7 serve as in-circuit serial programming (ICSP) clock and data pins - route these to an accessible header for factory programming.
The PIC16LC620T-04/SO operates at 4 MHz with 1 MIPS throughput, making signal integrity concerns minimal compared to high-speed MCUs. However, when using the on-chip analog comparator for sensor threshold detection, isolate the analog input traces (typically RA0-RA3) from digital switching signals on RB4-RB7. Add a 100 ohm series resistor and 10 nF capacitor on the comparator input for low-pass filtering of high-frequency noise. Per the PIC16C62X datasheet, the comparator response time is approximately 200-400 ns, so debounce input signals in software rather than relying on analog filtering alone.
Información de cumplimiento
RoHS compliance per Microchip product page. Lead-free (Pb-free) reflow-compatible. AEC-Q100 not applicable for commercial-grade MCU; industrial-grade variants (PIC16LC620AT-04I/SO) may have different qualification status - verify with Microchip datasheet for automotive applications.
