PIC16HV540T-20I/SO - 8-Bit OTP MCU 20MHz 768B | Microchip
N.º de pieza: PIC16HV540T-20I/SO ✓ Activo| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $2.25 | $2,25 |
| 10 | $2.03 | $20,30 |
| 100 | $1.8 | $180,00 |
| 500 | $1.62 | $810,00 |
| 1.000 | $1.44 | $1.440,00 |
PIC16HV540T-20I/SO Descripción general
An 8-bit microcontroller (MCU) is a small single-chip computer that integrates a CPU, non-volatile program memory, working RAM, and peripheral I/O on a single silicon die. Within the broader taxonomy, the PIC16HV540 sits at: 8-bit MCU -> RISC microcontroller -> PIC® 16C family -> EPROM/OTP-based device -> embedded controller -> semiconductor IC. OTP variants are one-time programmable and intended for low-to-medium-volume production or where firmware is final and code-protection is required.
Key features of the PIC16HV540 include the integrated shunt (HV) voltage regulator that lets the part operate directly from an unregulated high-voltage supply, an industrial -40 °C to +85 °C operating range denoted by the "I" suffix, and 33 single-word RISC instructions with a 2:1 code compression advantage over competing 8-bit architectures. The wide supply window simplifies power-tree design in appliances, automotive accessory modules, and battery chargers.
The PIC16HV540 uses a Harvard RISC core with 12-bit-wide instructions and a 20 MHz oscillator input, gated through an internal 4-state instruction pipeline. On-chip peripherals include a watchdog timer, power-on reset, and a programmable I/O structure. The on-die HV regulator converts an external high-voltage source to the internal logic supply without an external regulator IC, reducing BOM cost.
Typical applications include white-goods and appliance control, automotive accessory controllers, battery chargers, uninterruptible power supplies (UPS), and remote sensor nodes. The wide voltage tolerance suits 12 V automotive and 9 V battery-powered systems where a conventional 5 V MCU would otherwise require an external regulator.
When designing with this part, leave adequate decoupling on VDD (typically 0.1 µF + 10 µF), respect the 4 MHz instruction-cycle derivative implied by the 20 MHz oscillator input, and verify that OTP programming timing falls inside the device programming specification. Industrial-grade screening makes this part preferable over the commercial "-20/SO" variant for harsh environments.
This page synthesizes distributor pricing, drop-in same-package alternatives, and design considerations not found in the manufacturer datasheet alone.
Alternativas directas para PIC16HV540T-20I/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 PIC16HV540T-20I/SO (mismo factor de forma y huella) — difiere en Core Architecture, Watchdog Timer, Program Memory Size, Program Memory Type, Operating Temperature.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
PIC16HV540T-20I/SO
✅ Sustitución directa✓ En stock
$1.44 / unidad
Ver hoja de datos →PIC16HV540-20I/SO
✅ Sustitución directa✓ En stock
$1.39 / unidad
Ver hoja de datos →PIC16HV540T-04I/SO
✅ Sustitución directa✓ En stock
$1.78 / unidad
Ver hoja de datos →PIC16HV540-04I/SO
✅ Sustitución directa✓ En stock
$1.78 / unidad
Ver hoja de datos →PIC16HV540T-04/SO
✅ Sustitución directa✓ En stock
$1.2 / unidad
Ver hoja de datos →PIC16HV540-20I/P
✅ Sustitución directa✓ En stock
$1.41 / unidad
Ver hoja de datos →PIC16HV540T-20I/SO Valores máximos y características eléctricas
| Core | PIC® 8-bit RISC |
| Series | PIC® 16C |
| Program Memory Type | OTP (One-Time Programmable EPROM) |
| Program Memory Size | 768 bytes (512 x 12-bit words) |
| RAM Size | 25 bytes |
| Frecuencia de reloj máxima | 20 MHz |
| Instruction Set Width | 12-bit |
| Number of I/O Pins | 12 |
| Supply Voltage Range | 3.5 V to 15 V |
| On-chip Regulator | Integrated shunt (HV) voltage regulator |
| Rango de temperatura de funcionamiento | -40 °C to +85 °C (Industrial) |
| Encapsulado / Carcasa | 18-SOIC (0.295", 7.50 mm body width) |
| Tipo de montaje | Surface Mount |
| Estado del ciclo de vida | Active |
| Estado RoHS | Compliant |
Configuración de pines de PIC16HV540T-20I/SO
| Pin 1 | MCLR/VPP — Master clear (reset) input / programming voltage |
| Pin 2 | RA0 — Port A bit 0 (digital I/O) |
| Pin 3 | RA1 — Port A bit 1 (digital I/O) |
| Pin 4 | RB0 — Port B bit 0 (digital I/O, interrupt-on-change) |
| Pin 5 | RB1 — Port B bit 1 (digital I/O) |
| Pin 6 | RB2 — Port B bit 2 (digital I/O) |
| Pin 7 | RB3 — Port B bit 3 (digital I/O) |
| Pin 8 | RB4 — Port B bit 4 (digital I/O) |
| Pin 9 | RB5 — Port B bit 5 (digital I/O) |
| Pin 10 | RB6 — Port B bit 6 (digital I/O, ICSP clock) |
| Pin 11 | RB7 — Port B bit 7 (digital I/O, ICSP data) |
| Pin 12 | VSS — Ground reference |
| Pin 13 | VDD — Positive supply (regulated internally from HV input) |
| Pin 14 | OSC1/CLKIN — Oscillator input / external clock |
| Pin 15 | OSC2/CLKOUT — Oscillator output / clock out |
| Pin 16 | RC0 — Port C bit 0 (digital I/O) |
| Pin 17 | RC1 — Port C bit 1 (digital I/O) |
| Pin 18 | RC2 — Port C bit 2 (digital I/O) |
Aplicaciones típicas
PIC16HV540T-20I/SO es adecuado para 6 aplicacións: White Goods & Appliance Control, Battery Charger & UPS Controllers, Automotive Accessory Modules, Remote Sensor & IoT Edge Nodes, Industrial Timer & Relay Logic Replacement, Consumer Electronics & Toy Controllers.
White Goods & Appliance Control
The PIC16HV540T-20I/SO is well matched to white-goods control boards thanks to its 3.5-15 V on-chip HV regulator, which accepts an unregulated rectified mains-derived rail without an external 5 V LDO. The 768-byte OTP program memory stores washing-machine, dishwasher, or microwave timing/state machines comfortably. The 12 GPIO drive relays, triac optocouplers, keypads, and seven-segment displays directly, while 25 bytes of RAM handle debounced state. Industrial-grade -40 °C to +85 °C screening survives refrigerator compressor heat and unheated garage environments.
Recomendado
Battery Charger & UPS Controllers
The integrated HV shunt regulator makes PIC16HV540T-20I/SO ideal for 12 V lead-acid charger and small UPS controllers where the MCU powers directly from the battery rail. The 20 MHz oscillator handles PWM generation for switch-mode charger topologies at switching frequencies above audible range. OTP memory secures firmware against inadvertent erasure in field service. The wide supply tolerance tolerates battery voltage from discharged (~10.5 V) to equalized charge (15 V) without external regulation, reducing BOM cost in budget charger designs.
Recomendado
Automotive Accessory Modules
In automotive accessory controllers (alarm LED drivers, seat-heater relays, auxiliary lighting), the PIC16HV540T-20I/SO connects directly to a 12 V vehicle bus without an external 5 V regulator. Its -40 °C to +85 °C industrial grade survives under-dash thermal extremes in non-safety-critical accessory applications. The 12-bit instruction set and 33-instruction RISC core deliver fast I/O response for PWM-driven lighting. Note: this part is industrial-grade, not AEC-Q100 qualified; for safety-critical or under-hood use, consider PIC16F or PIC18 AEC-Q100 qualified alternatives.
Recomendado
Remote Sensor & IoT Edge Nodes
The PIC16HV540T-20I/SO serves as an ultra-low-cost edge node MCU for battery-powered remote sensor nodes, especially those harvesting from 9 V or 12 V sources. The on-chip HV regulator eliminates the quiescent draw of an external LDO, extending battery life. The 20 MHz core handles local sensor sampling, threshold logic, and sleep/wake sequencing within tight power budgets. The 768-byte OTP memory is sized for small fixed-function algorithms such as thermistor linearization or simple Modbus framing without protocol-stack overhead.
Recomendado
Industrial Timer & Relay Logic Replacement
Replacing legacy electromechanical timer/relay logic with PIC16HV540T-20I/SO consolidates timing functions into software, eliminating drift-prone analog RC networks. The 12 GPIO directly drive 12 V relay coils via transistors, and the 25-byte RAM stores state across power cycles. Industrial temperature grade supports factory-floor enclosures. The HV regulator accepts 24 V industrial rails through a simple resistor dropper, making retrofit of 24 V control panels straightforward with no power-tree redesign.
Recomendado
Consumer Electronics & Toy Controllers
Cost-sensitive consumer products and electronic toys leverage the PIC16HV540T-20I/SO to replace discrete logic with a programmable controller. The 768-byte OTP stores sound-effect sequencing, motor PWM patterns, and IR remote protocols. The HV regulator accepts 9 V battery inputs directly, simplifying single-rail designs in toys and educational kits. OTP memory secures proprietary control algorithms from cloning. The 18-SOIC footprint fits compact handheld enclosures common in this segment.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para PIC16HV540T-20I/SO — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | PIC16HV540T-20I/SO | PIC16HV540-20I/SO | PIC16HV540T-04I/SO | PIC16HV540-04I/SO | PIC16HV540T-04/SO |
|---|---|---|---|---|---|---|
| Package | 18-SOIC (7.50 mm) | 18-SOIC (7.50 mm) - same | 18-SOIC (7.50 mm) - same | 18-SOIC (7.50 mm) - same | 18-SOIC (7.50 mm) - same | 18-SOIC (7.50 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Max Clock Frequency | 20 MHz | 20 MHz | 20 MHz | 4 MHz | 4 MHz | 4 MHz |
| Temperature Grade | Industrial -40 °C to +85 °C | Industrial -40 °C to +85 °C | Industrial -40 °C to +85 °C | Industrial -40 °C to +85 °C | Industrial -40 °C to +85 °C | Commercial 0 °C to +70 °C |
| Packaging Format | Tape & Reel | Tape & Reel | Tube | Tape & Reel | Tube | Tape & Reel |
| Program Memory | 768 B (512 x 12) | 768 B (512 x 12) | 768 B (512 x 12) | 768 B (512 x 12) | 768 B (512 x 12) | 768 B (512 x 12) |
| RAM Size | 25 bytes | 25 bytes | 25 bytes | 25 bytes | 25 bytes | 25 bytes |
| Supply Voltage | 3.5 V to 15 V | 3.5 V to 15 V | 3.5 V to 15 V | 3.5 V to 15 V | 3.5 V to 15 V | 3.5 V to 15 V |
| GPIO Count | 12 | 12 | 12 | 12 | 12 | 12 |
Diferenciadores clave
- On-chip HV shunt regulator eliminates external 5 V LDO (frente a PIC16F84A-I/P)
- Industrial-grade -40 °C to +85 °C temperature range (frente a PIC16HV540T-20/SO)
- Tap & Reel packaging for SMT production (frente a PIC16HV540-20I/SO)
Notas de diseño
The on-chip HV shunt regulator in PIC16HV540T-20I/SO accepts 3.5-15 V at the VDD pin and regulates the internal core supply internally. Place a 10 µF electrolytic + 0.1 µF ceramic decoupling pair within 5 mm of VDD (pin 13) and a 0.1 µF + 10 µF pair on VSS return path to handle the shunt regulator's switching transients. The shunt topology dissipates the difference between input voltage and internal 5 V rail, so at 15 V input and full I/O load the part dissipates roughly (15-5) × I_load. Estimate: 1 mA active I/O at 15 V input = 10 mW dissipation, well within the SOIC package rating.
Do not apply continuous voltage above 15 V to VDD - the on-chip shunt regulator is not rated beyond the datasheet absolute maximum and will damage the device. Avoid connecting VDD to a 5 V regulated rail while expecting HV operation; the HV regulator requires the higher input to function correctly. For OTP programming, route MCLR/VPP to the ICSP header per Microchip programming specification; do not use a pull-up weaker than 10 kΩ on MCLR as this causes spurious resets in noisy appliance environments.
Route the oscillator traces (OSC1/OSC2, pins 14-15) as short as possible and keep them away from RB-port switching traces to minimize EMI coupling. Place the crystal or resonator within 5 mm of the MCU with its load capacitors grounded to a single VSS via. The 18-SOIC land pattern should use at least 2 oz copper on VDD/VSS pours to handle the shunt regulator current. For SMT production, confirm reel orientation matches JEDEC EIA-481.
Información de cumplimiento
RoHS compliant per DigiKey listing; AEC-Q100 NOT qualified - this is an industrial-grade part, not automotive-grade. For AEC-Q100 designs choose a PIC16F-series automotive part. Halogen-free status not explicitly stated in distributor data.
