PIC16HV540-04I/SO - 4MHz 8-bit MCU w/ Voltage Regulator | Microchip
MPN: PIC16HV540-04I/SO ✓ Hoạt độngPIC16HV540-04I/SO Tóm tắt
An 8-bit PIC microcontroller is a Harvard-architecture CMOS device using a reduced instruction set (RISC) tuned for embedded control. It belongs to the broader category of microcontrollers -> microcontrollers and microprocessors -> semiconductors -> integrated circuits. The "HV" prefix in the part number denotes the integrated high-voltage shunt regulator, eliminating the need for an external 5V LDO when powered from a 9V or 12V rail - a unique feature compared with most PIC16C5x siblings.
Key features include 4MHz maximum clock, 200ns instruction cycle, 12-bit wide opcodes for 2:1 code compression, 8-bit data path, 12 configurable I/O pins sharing bidirectional ports, and an industrial temperature range of -40C to +85C. The integrated voltage regulator also simplifies designs that previously required external Zener or LDO networks.
The PIC16HV540 architecture pairs an EPROM-based program memory with a 7-stage instruction pipeline visible only to the developer through its single-cycle execution model. The 12-bit instruction width combined with full orthogonal addressing eliminates special-purpose accumulator constraints, making the device unusually easy to program given its 33-instruction set.
Typical applications include battery chargers, automotive subsystems, industrial control logic, simple timer/counter replacements, and any embedded node previously built around discrete 555-style circuitry. The wide supply tolerance supports direct 9V or 12V battery operation.
Designers should budget EPROM programming time and ensure the OTP windowless package suits their production volume - the PIC16F equivalent is recommended for prototype or low-volume runs. The PIC16HV540-04I/SO variant ships in industrial temperature grade.
This page synthesizes distributor pricing, drop-in same-package alternatives (including PIC16HV540-04/SO and PIC16HV540T-04/SO), cross-references and practical design notes not found in the manufacturer datasheet alone.
Bộ thay thế dễ dàng lắp đặt cho PIC16HV540-04I/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 PIC16HV540-04I/SO (cùng hình factor và footprint) — khác nhau ở Core Architecture, Package, Watchdog Timer, Operating Temperature, On-chip Voltage Regulator.
PIC16HV540-04/SO
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Xem tài liệu →PIC16HV540T-04/SO
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Xem tài liệu →PIC16HV540-04I/SO Tỷ lệ tối đa & tính chất điện
| Core Architecture | Enhanced PIC16C54 (8-bit RISC) |
| Program Memory Type | OTP (One-Time Programmable EPROM) |
| Program Memory Size | 768B (512 x 12) |
| RAM Size | 25 B |
| Tần số xung maksimum | 4 MHz |
| Instruction Cycle | 200 ns |
| Number of Instructions | 33 single-word |
| I/O Pins | 12 |
| Supply Voltage Range | 3.5 V to 15 V |
| On-chip Voltage Regulator | Yes (shunt type) |
| Khoảng nhiệt độ hoạt động | -40 C to +85 C (Industrial) |
| Hộp | 18-pin SOIC (SO) |
| Kiểu lắp đặt | Surface Mount |
| Data EEPROM | None (OTP only) |
| Trạng thái RoHS | Compliant |
Cấu hình chân PIC16HV540-04I/SO
| Chân 1 | RA2 — Bidirectional I/O pin / analog input |
| Chân 2 | RA3 — Bidirectional I/O pin / analog input |
| Chân 3 | T0CKI — Timer0 clock input |
| Chân 4 | MCLR — Master Clear (reset) input, active low |
| Chân 5 | VSS — Ground reference |
| Chân 6 | RB0 — Bidirectional I/O pin |
| Chân 7 | RB1 — Bidirectional I/O pin |
| Chân 8 | RB2 — Bidirectional I/O pin |
| Chân 9 | RB3 — Bidirectional I/O pin |
| Chân 10 | RB4 — Bidirectional I/O pin |
| Chân 11 | RB5 — Bidirectional I/O pin |
| Chân 12 | RB6 — Bidirectional I/O pin |
| Chân 13 | RB7 — Bidirectional I/O pin |
| Chân 14 | VDD — Positive supply (regulated internally) |
| Chân 15 | OSC2 — Oscillator output / clock out |
| Chân 16 | OSC1 — Oscillator input / external clock |
| Chân 17 | RA0 — Bidirectional I/O pin / analog input |
| Chân 18 | RA1 — Bidirectional I/O pin / analog input |
Ứng dụng tiêu biểu
PIC16HV540-04I/SO phù hợp cho 6 Áp dụngs: Battery-Powered Industrial Sensors, Automotive 12V Accessory Controllers, Smart Home Wireless Sensor Nodes, Appliance Timer and Control Logic, Replacement of Discrete 555 Timer Circuits, Educational and Hobby Electronics.
Battery-Powered Industrial Sensors
The PIC16HV540-04I/SO is well-suited for battery-powered industrial sensor nodes because its integrated on-chip shunt voltage regulator accepts a wide 3.5V to 15V input range. This lets a 9V or 12V battery feed the MCU directly without an external LDO. The 4MHz core and 200ns instruction cycle handle periodic sensor sampling, threshold comparisons and sleep-mode wakeups efficiently, while the 12 I/O pins interface directly to analog front-ends, comparators and digital sensor buses. The 25B RAM and 768B OTP are sufficient for state-machine logic, calibration tables and tiny protocol stacks.
Được đề xuất
Automotive 12V Accessory Controllers
The PIC16HV540-04I/SO integrates cleanly into automotive 12V accessory controllers where raw battery voltage can swing from 9V cranking transients to 16V load-dump spikes. The on-chip shunt regulator absorbs this wide range without an external pre-regulator, reducing BOM cost and PCB area. With 12 I/O pins, the MCU can directly drive relay coils, MOSFET gates, status LEDs and switch inputs. The industrial -40C to +85C temperature grade handles under-dash thermal environments.
Được đề xuất
Smart Home Wireless Sensor Nodes
For smart-home sensor endpoints, the PIC16HV540-04I/SO provides a low-cost deterministic control core that wakes on interrupt, reads a sensor, applies threshold logic and returns to sleep. With 25B of RAM and 768B of OTP, it accommodates compact state-machine firmware for occupancy, door/window or environmental sensors. The integrated regulator simplifies direct 9V battery packs, while 12 I/O pins reserve budget for an SPI-attached RF transceiver (such as the Microchip MRF24J40 family) or a sub-GHz transmitter.
Được đề xuất
Appliance Timer and Control Logic
The PIC16HV540-04I/SO is ideal for white-goods timer and control applications such as dishwasher cycle controllers, washing-machine front panels, and microwave user-interface logic. Its 33-instruction RISC core is simple enough for firmware engineers to develop and maintain without complex toolchains, and the 12 I/O pins comfortably drive 7-segment displays, keypads, buzzer drivers and triac control lines. The on-chip shunt regulator eliminates the external 5V LDO normally required when tapping a 12V or 15V appliance rail.
Được đề xuất
Replacement of Discrete 555 Timer Circuits
The PIC16HV540-04I/SO is frequently used to replace legacy 555-timer-based discrete circuits where multiple timing channels or programmable behaviour is needed. With its 4MHz core and deterministic single-cycle execution, it can synthesize multiple software timers, PWM outputs and event counters that would otherwise require a forest of resistors, capacitors and comparators. The 12 I/O pins support multiple output channels and trigger inputs, while the wide 3.5V to 15V supply tolerance matches existing 555 designs without modification.
Được đề xuất
Educational and Hobby Electronics
For educational and hobbyist projects, the PIC16HV540-04I/SO offers an approachable entry point to the PIC microcontroller family. The 33-instruction RISC core is one of the easiest to learn, and the 18-SOIC package is breadboard-friendly with an SOIC-to-DIP adapter. With its integrated voltage regulator, students can power the part from a 9V battery without any extra regulation, simplifying lab exercises in embedded programming, I/O control and timer/counter concepts. The PIC16HV540/JW windowed CERDIP variant is often used for development and erase/reprogram cycles.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC16HV540-04I/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 | PIC16HV540-04/SO | PIC16HV540T-04/SO |
|---|---|---|---|
| Package | 18-SOIC | 18-SOIC - same | 18-SOIC - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology |
| Maximum Clock Frequency | 4 MHz | 4 MHz | 4 MHz |
| Program Memory | 768B (512x12) OTP | 768B (512x12) OTP | 768B (512x12) OTP |
| RAM | 25 B | 25 B | 25 B |
| I/O Pins | 12 | 12 | 12 |
| Supply Voltage Range | 3.5 V to 15 V | 3.5 V to 15 V | 3.5 V to 15 V |
| Operating Temperature | -40 C to +85 C (Industrial) | 0 C to +70 C (Commercial) | -40 C to +85 C (Industrial) |
| Packaging | Tube | Tube | Tape & Reel |
| On-chip Voltage Regulator | Yes (shunt) | Yes (shunt) | Yes (shunt) |
Bảo phân biệt quan trọng
- Integrated on-chip shunt voltage regulator (vsPIC16C54-I/SO)
- Industrial -40C to +85C temperature range (vsPIC16HV540-04/SO)
- 33 single-cycle instructions (vsPIC16F54-I/SO)
Ghi chú thiết kế
Estimated: The PIC16HV540-04I/SO internal shunt regulator must be supplied through a current-limiting resistor when VIN exceeds the internal regulated VDD. Per Microchip datasheet DS40197B, use a resistor sized so that the regulator bias current stays within the recommended range (typically 1-10mA through the regulator) at the minimum expected VIN. At VIN = 12V and 5mA bias current, a series resistor of approximately 1.4kohm is typical; verify against the application's minimum supply voltage.
Place the 0.1uF VDD decoupling capacitor as close as possible to pin 14 of the SOIC-18 package, with the ground return tied directly to pin 5 (VSS) through a short trace. Per Microchip layout guidelines, keep oscillator traces (OSC1/OSC2, pins 15-16) short and shielded, and route the MCLR pull-up (pin 4) away from high-noise switching nodes. Avoid running digital signal traces directly under the SOIC package to minimize crosstalk on the analog-capable RA pins.
The PIC16HV540-04I/SO uses OTP (One-Time Programmable) memory - once programmed it cannot be erased. For prototype or development cycles, use the PIC16HV540/JW windowed CERDIP variant or migrate to the PIC16F54 (Flash) family. Also note that all 12 I/O pins are bidirectional with weak internal pull-ups; high-current loads (above the per-pin source/sink ratings in the datasheet) require external drivers such as the ULN2003 or TC4420.
The SOIC-18 package has a thermal resistance theta_JA of approximately 100 C/W on a standard 4-layer JEDEC test board. At an ambient of +85C industrial maximum, the maximum allowable internal dissipation is roughly 400mW before the junction temperature reaches +125C. The PIC16HV540's typical 4MHz operating current is only a few mA, so thermal concerns are minimal for normal digital-only operation.
Thông tin tuân thủ
RoHS and REACH compliant per Microchip product page; lead-free matte-tin plating. Not AEC-Q100 qualified - the PIC16HV540 family targets industrial and consumer applications, not automotive.