PIC16HV540-04/P - 8-Bit 4MHz OTP MCU 768B EPROM 18-PDIP | Microchip
Teilenummer: PIC16HV540-04/P ✓ Aktiv| Menge | Stückpreis | Gesamt |
|---|---|---|
| 1 | $4.2 | $4,20 |
| 10 | $3.78 | $37,80 |
| 100 | $3.36 | $336,00 |
| 500 | $2.94 | $1.470,00 |
| 1.000 | $2.62 | $2.620,00 |
PIC16HV540-04/P Übersicht
An 8-bit microcontroller (MCU) is a single-chip computer with an 8-bit data path, integrating a CPU, program memory, data RAM, and peripherals. RISC-based MCUs execute one instruction per clock cycle and use a small, orthogonal instruction set, allowing compact code and predictable timing. Within the broader hierarchy, an 8-bit MCU is a sub-category of microcontroller, itself a category under microcontrollers, embedded controllers, and integrated circuits. The PIC16HV540 specifically belongs to the PIC16C5x legacy family of OTP-based EPROM devices, distinguished from flash-based PIC16F parts and from PIC18/PIC24 families by its 12-bit wide instruction word.
The most distinctive features of the PIC16HV540-04/P are its integrated shunt voltage regulator (eliminating the need for an external 5 V regulator in many designs), 33-instruction orthogonality (PIC16C5x-compatible), and wide 3.5 V-15 V supply tolerance. The internal regulator accepts unregulated battery or bus power directly, reducing external BOM. The OTP EPROM supports one-time field programming via standard Microchip development tools, making the device suitable for fixed-function production firmware.
Architecturally, the PIC16HV540-04/P combines a Harvard RISC core with a 12-bit program word, 8-bit data path, a two-level hardware stack, and dedicated 8-bit timer. Watchdog timer, sleep mode, and interrupt logic are integrated, with an external RC/oscillator clock source required. The wide supply range is enabled by an internal shunt regulator that clamps the die supply to a safe internal voltage while dissipating excess energy thermally.
Typical applications include appliance control modules, automotive body controllers, battery-powered sensor nodes, simple LED driver controllers, low-cost replacement of discrete logic, and hobby/educational microcontroller projects where the 4 MHz performance, 12-bit instruction width, and wide supply input are advantageous.
Designers should plan for an external clock source (RC network or crystal/ceramic resonator) and confirm OTP programming during prototype runs. Because the PIC16HV540-04/P uses OTP EPROM, firmware updates are not possible in-circuit; the part is intended for mature, stable production code rather than iterative development.
This page synthesizes current distributor pricing, drop-in replacement candidates from Microchip's own family, comparison tables, and practical design notes that go beyond the manufacturer's datasheet alone, helping engineers evaluate the PIC16HV540-04/P against flash-based alternatives and modern 8-bit MCUs.
Drop-in-Alternativen für PIC16HV540-04/P – gleiches Gehäuse, Pin-kompatibel. Bauteile mit anderem Gehäuse, die eine PCB-Überarbeitung erfordern, sind ausgeschlossen.
Varianten dieser Serie
Modelle derselben Serie, die drop-in-kompatibel sind mit PIC16HV540-04/P (gleiche Bauform und Footprint) – abweichend in Package, Program Memory Size, Program Memory Type, Core Architecture, Maximum Clock Frequency.
Schnellvergleichstool – Wählen Sie Alternativbauteile für den Direktvergleich:
PIC16HV540-04I/P
✅ Drop-In✓ Auf Lager
$1.85 / Stück
Datenblatt ansehen →PIC16HV540-04/P301
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
PIC16HV540/JW
✅ Drop-In✓ Auf Lager
$6.9 / Stück
Datenblatt ansehen →PIC16C54C-04/P
✅ Drop-In✓ Auf Lager
$1.71 / Stück
Datenblatt ansehen →PIC16F54-I/P
✅ Drop-In ⚠️ Spezifikationen ungeprüft✓ Auf Lager
$0.68 / Stück
Datenblatt ansehen →PIC16HV540-04/P Grenzwerte & elektrische Eigenschaften
| Core Architecture | PIC16C5x (8-bit RISC, Harvard) |
| Instruction Set | 33 single-word instructions, 12-bit wide |
| Program Memory Size | 768 B (512 x 12 words) EPROM |
| Program Memory Type | OTP (One-Time Programmable) EPROM |
| RAM Size | 25 x 8 bytes |
| EEPROM | None (no internal data EEPROM) |
| Maximale Taktfrequenz | 4 MHz |
| Instruction Cycle Time | 200 ns |
| Supply Voltage Range | 3.5 V to 15 V (on-chip shunt regulator) |
| Number of I/O Pins | 12 |
| Timers | 1 x 8-bit (TMR0) |
| Watchdog Timer | Yes (on-chip WDT) |
| Interrupts | Yes |
| Oscillator Type | External (RC or crystal/resonator) |
| Stack Depth | 2 levels (hardware) |
| Betriebstemperaturbereich | -40 C to +85 C (industrial) |
| Gehäuse | 18-PDIP (0.300 in / 7.62 mm) |
| Montageart | Through-Hole |
| Packaging | Tube |
PIC16HV540-04/P Pin-Konfiguration
| Pin 1 | RA2 — Bidirectional I/O port A bit 2 |
| Pin 2 | RA3 — Bidirectional I/O port A bit 3 |
| Pin 3 | RTCC — Timer/counter clock input (TMR0) |
| Pin 4 | MCLR — Master clear reset input (active low) |
| Pin 5 | VSS — Ground reference |
| Pin 6 | RB0 — Bidirectional I/O port B bit 0 |
| Pin 7 | RB1 — Bidirectional I/O port B bit 1 |
| Pin 8 | RB2 — Bidirectional I/O port B bit 2 |
| Pin 9 | RB3 — Bidirectional I/O port B bit 3 |
| Pin 10 | RB4 — Bidirectional I/O port B bit 4 |
| Pin 11 | RB5 — Bidirectional I/O port B bit 5 |
| Pin 12 | RB6 — Bidirectional I/O port B bit 6 |
| Pin 13 | RB7 — Bidirectional I/O port B bit 7 |
| Pin 14 | VDD — Positive supply (regulated internally by on-chip shunt regulator from external 3.5 V to 15 V) |
| Pin 15 | OSC2 — Oscillator output |
| Pin 16 | OSC1 — Oscillator input |
| Pin 17 | RA0 — Bidirectional I/O port A bit 0 |
| Pin 18 | RA1 — Bidirectional I/O port A bit 1 |
Typische Anwendungen
PIC16HV540-04/P ist geeignet für 6 Anwendungs: Appliance Control Modules, Automotive Body Controllers, Battery-Powered Sensor Nodes, LED Driver and Lighting Controllers, Replacement of Discrete Logic, Educational and Hobby Microcontroller Projects.
Appliance Control Modules
The PIC16HV540-04/P fits appliance control modules thanks to its integrated shunt voltage regulator that accepts 3.5 V to 15 V unregulated DC bus power without an external 5 V LDO, its 12 digital I/O for keypad/switch inputs and relay/triac drive outputs, and its 4 MHz RISC core providing 200 ns deterministic instruction timing. The wide-supply shunt regulator dissipates excess voltage thermally, ideal for direct connection to rectified mains-derived rails. The 33-instruction orthogonal PIC16C5x core keeps firmware compact and easy to validate under IEC 60730 functional-safety review paths. 25 bytes of RAM and 768 bytes of OTP EPROM are sufficient for fixed-function state machines driving washing-machine timers, microwave oven user interfaces, and HVAC fan controllers. Designers should size the external clock and ensure OTP programming is performed during the production firmware burn-in stage.
Empfohlen
Automotive Body Controllers
The PIC16HV540-04/P suits automotive body controllers operating from a 12 V vehicle bus because its internal shunt regulator clamps the wide 3.5 V to 15 V range and tolerates load-dump transients within Microchip's specified envelope. Twelve bidirectional I/O pins drive lamps, relays, and H-bridge enable lines, while the on-chip watchdog timer and 8-bit timer provide reliable debounce and PWM for mirror actuators or interior dimming. Designers use the wide supply tolerance to skip a discrete 5 V regulator and reduce BOM. The 4 MHz clock and 200 ns instruction cycle keep response latencies below 5 us for LIN-style soft-protocol bit-banging on a single GPIO. 768 B EPROM is adequate for fixed-function body functions such as seat-position memory or courtesy-lamp fade timers.
Empfohlen
Battery-Powered Sensor Nodes
The PIC16HV540-04/P serves low-duty-cycle battery-powered sensor nodes because its sleep current draws minimal power and the 3.5 V to 15 V supply window lets it run directly from a 9 V battery or 2xAA to 4xAA stacks without a regulator. The 8-bit TMR0 wakes the core from sleep on overflow, enabling periodic temperature or contact-sensor sampling with a simple RC oscillator. Twelve I/O include interrupt-on-change wake sources for mechanical switch polling. 25 bytes of RAM and 768 B OTP EPROM cover state machine code for thermistor linearization, threshold detection, and one-wire or I2C bit-banged master protocols to external sensors. The wide-supply shunt regulator and absence of an external LDO lower quiescent draw and BOM cost in disposable and long-life sensor applications.
Empfohlen
LED Driver and Lighting Controllers
The PIC16HV540-04/P powers LED driver and decorative lighting controllers because its 12 I/O lines can PWM multiple LED strings via software bit-banging, the on-chip 8-bit timer provides a deterministic PWM timebase, and the wide 3.5 V to 15 V supply accepts 12 V LED bus power directly. The integrated shunt regulator removes the need for an external 5 V LDO on each fixture, lowering component count and board area in high-channel-count LED strips. With 768 B OTP EPROM the MCU holds fixed chase patterns, color-temperature presets, or DMX-style soft-decoder firmware without external memory. The 4 MHz clock supports PWM frequencies above 100 Hz to avoid visible flicker. Designers should size the shunt regulator's thermal dissipation against the highest expected bus voltage.
Empfohlen
Replacement of Discrete Logic
The PIC16HV540-04/P is an efficient replacement for discrete 74-series logic glue because 12 I/O and a 200 ns instruction cycle easily replace dozens of gates implementing counters, decoders, or sequencers. A single MCU in 18-PDIP replaces a board-full of 74HC logic, cutting PCB area, BOM cost, and assembly time. The PIC16C5x core's 33-instruction set makes logic-equivalent firmware simple to author and verify. The wide 3.5 V to 15 V supply accommodates existing 5 V or 12 V logic rails without level shifters. OTP EPROM suits products whose logic sequence is finalized at design release and never changes. Designers porting legacy 74HC designs should plan for one firmware write per board revision.
Empfohlen
Educational and Hobby Microcontroller Projects
The PIC16HV540-04/P is well-suited to educational microcontroller coursework because its 18-PDIP package is breadboard-friendly and the 33 single-word instruction PIC16C5x core is the canonical teaching architecture documented in countless textbooks. The wide 3.5 V to 15 V supply lets students power projects from a 9 V battery or USB-derived 5 V without a regulator. The 200 ns cycle time and 12 I/O support simple projects from LED blinkers and seven-segment counters to stepper-motor sequencers. The on-chip watchdog timer and sleep mode teach power-management concepts. For course labs that need firmware iteration, the windowed PIC16HV540/JW (UV-erasable) is preferred. After graduation, students can migrate their code to flash-based PIC16F54-I/P without changing the 18-pin footprint.
Empfohlen
Zusammenfassung der empfohlenen Produkte
Technische Referenzdaten für PIC16HV540-04/P – Vergleich, Designhinweise und Compliance-Informationen.
Auswahlhilfe
Vergleich mit Alternativen
| Parameter | Dieses Produkt | PIC16HV540-04I/P | PIC16HV540-04/P301 | PIC16HV540/JW | PIC16C54C-04/P | PIC16F54-I/P |
|---|---|---|---|---|---|---|
| Package | 18-PDIP (0.300 in) | 18-PDIP - same | 18-PDIP - same | 18-CDIP (windowed) - same pin count | 18-PDIP - same | 18-PDIP - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory | 768 B (512 x 12) OTP EPROM | 768 B OTP EPROM | 768 B OTP EPROM | 768 B windowed EPROM (UV-erasable) | 512 B (384 x 12) OTP EPROM | 768 B Flash (in-circuit reprogrammable) |
| Maximum Clock | 4 MHz | 4 MHz | 4 MHz | 4 MHz | 4 MHz | 20 MHz (faster) |
| Supply Voltage | 3.5 V to 15 V (on-chip shunt regulator) | 3.5 V to 15 V (shunt) | 3.5 V to 15 V (shunt) | 3.5 V to 15 V (shunt) | 3.0 V to 6.0 V (no shunt regulator) | 2.0 V to 5.5 V (no shunt regulator) |
| I/O Pins | 12 | 12 | 12 | 12 | 12 | 12 |
| Temperature Range | 0 C to +70 C (commercial) | -40 C to +85 C (industrial) | 0 C to +70 C | 0 C to +70 C | 0 C to +70 C | -40 C to +85 C |
| Memory Type | OTP EPROM (one-time programmable) | OTP EPROM | OTP EPROM | Windowed UV-erasable EPROM | OTP EPROM | Flash (reprogrammable) |
Wichtigste Unterscheidungsmerkmale
- On-chip shunt voltage regulator accepts 3.5 V to 15 V unregulated input (vs. PIC16C54C-04/P)
- Larger program memory than predecessor PIC16C54C (vs. PIC16C54C-04/P)
- OTP EPROM with 33-instruction PIC16C5x core keeps firmware simple and deterministic (vs. PIC16F54-I/P)
Designhinweise
The PIC16HV540-04/P contains an on-chip shunt voltage regulator that clamps the die supply to the internal core voltage, accepting external 3.5 V to 15 V. Excess voltage is dissipated as heat in the shunt regulator. Estimated: at VIN=15 V driving a 5 mA logic load plus MCU quiescent draw, shunt dissipation is roughly (15 - 5) x 0.005 = 50 mW; at higher loads with the I/O sourcing current the dissipation can reach several hundred milliwatts. Provide adequate PCB copper pour around VDD/VSS pins and avoid running the device at the maximum supply voltage with all I/O sourcing maximum current simultaneously.
OSC1 and OSC2 require an external clock source - either a crystal/ceramic resonator with two load capacitors to ground, or an RC network. Per the Microchip datasheet, the oscillator configuration determines power consumption and EMI. For low-cost designs a ceramic resonator with two 22 pF capacitors is typical. For RC oscillator mode, choose R and C values from the datasheet's RC table to land within +/- 5% of the 4 MHz target across temperature. Glitches on OSC1 during power-up can cause improper core initialization - keep rise time below 1 ms and add a small RC delay on MCLR if needed.
Three common pitfalls: (1) OTP EPROM is one-time programmable - there is no second chance; verify firmware with a PIC16HV540/JW windowed sample before committing to OTP production units. (2) The hardware stack is only 2 levels deep - deeply nested subroutines will silently overflow and corrupt the program counter. Plan call depth accordingly. (3) Port B bits 6 and 7 are open-drain on some PIC16C5x variants and require external pull-ups; consult the datasheet I/O section before driving these lines high. Also note that the PIC16C5x core lacks interrupts on most variants - design firmware as polled state machines.
Place the MCLR pull-up resistor (typically 10 kohm to VDD) close to the MCLR pin. Keep the MCLR trace short and away from high-current switching nodes to avoid spurious resets. Decouple VDD with a 0.1 uF ceramic capacitor placed within 5 mm of the VDD pin, plus a bulk electrolytic of 1-10 uF if the supply line has significant inductance. For 18-PDIP layouts leave room for an in-circuit serial programming (ICSP) header if development is anticipated, even on production boards, as OTP programming is typically done with a Microchip PICkit or MPLAB PM3 after PCB assembly.
Compliance-Informationen
RoHS and REACH status not present in verified distributor data; users should consult Microchip product page or contact factory for confirmation. Part is not AEC-Q100 qualified; for automotive applications Microchip recommends AEC-Q100 qualified PIC16 variants or dedicated automotive part numbers.
