PIC16HV540T-20I/SO - 8-Bit OTP MCU 20MHz 768B | Microchip
MPN: PIC16HV540T-20I/SO ✓ Hoạt độngPIC16HV540T-20I/SO Tóm tắt
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.
Bộ thay thế dễ dàng lắp đặt cho PIC16HV540T-20I/SO — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với PIC16HV540T-20I/SO (cùng hình factor và footprint) — khác nhau ở Core Architecture, Watchdog Timer, Program Memory Size, Program Memory Type, Operating Temperature.
PIC16HV540T-20I/SO
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16HV540-20I/SO
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16HV540T-04I/SO
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16HV540-04I/SO
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16HV540T-04/SO
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16HV540-20I/P
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Xem tài liệu →PIC16HV540T-20I/SO Tỷ lệ tối đa & tính chất điện
| 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 |
| Tần số xung maksimum | 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 |
| Khoảng nhiệt độ hoạt động | -40 °C to +85 °C (Industrial) |
| Hộp / Vỏ | 18-SOIC (0.295", 7.50 mm body width) |
| Kiểu lắp đặt | Surface Mount |
| Trạng thái vòng đời | Active |
| Trạng thái RoHS | Compliant |
Cấu hình chân PIC16HV540T-20I/SO
| Chân 1 | MCLR/VPP — Master clear (reset) input / programming voltage |
| Chân 2 | RA0 — Port A bit 0 (digital I/O) |
| Chân 3 | RA1 — Port A bit 1 (digital I/O) |
| Chân 4 | RB0 — Port B bit 0 (digital I/O, interrupt-on-change) |
| Chân 5 | RB1 — Port B bit 1 (digital I/O) |
| Chân 6 | RB2 — Port B bit 2 (digital I/O) |
| Chân 7 | RB3 — Port B bit 3 (digital I/O) |
| Chân 8 | RB4 — Port B bit 4 (digital I/O) |
| Chân 9 | RB5 — Port B bit 5 (digital I/O) |
| Chân 10 | RB6 — Port B bit 6 (digital I/O, ICSP clock) |
| Chân 11 | RB7 — Port B bit 7 (digital I/O, ICSP data) |
| Chân 12 | VSS — Ground reference |
| Chân 13 | VDD — Positive supply (regulated internally from HV input) |
| Chân 14 | OSC1/CLKIN — Oscillator input / external clock |
| Chân 15 | OSC2/CLKOUT — Oscillator output / clock out |
| Chân 16 | RC0 — Port C bit 0 (digital I/O) |
| Chân 17 | RC1 — Port C bit 1 (digital I/O) |
| Chân 18 | RC2 — Port C bit 2 (digital I/O) |
Ứng dụng tiêu biểu
PIC16HV540T-20I/SO phù hợp cho 6 Áp dụngs: 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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC16HV540T-20I/SO — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | 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 |
Bảo phân biệt quan trọng
- On-chip HV shunt regulator eliminates external 5 V LDO (vsPIC16F84A-I/P)
- Industrial-grade -40 °C to +85 °C temperature range (vsPIC16HV540T-20/SO)
- Tap & Reel packaging for SMT production (vsPIC16HV540-20I/SO)
Ghi chú thiết kế
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.
Thông tin tuân thủ
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.
