PIC16LC554-04I/SO - 8-Bit 4MHz OTP MCU 896B | Microchip
MPN: PIC16LC554-04I/SO ✓ فعالPIC16LC554-04I/SO جائزہ
A microcontroller (MCU) is a single-chip computer containing a CPU core, non-volatile program memory (ROM/EPROM/Flash), volatile data memory (RAM), and configurable peripheral I/O. Within the broader taxonomy, an MCU belongs to the semiconductor > integrated circuit > microcontroller category. The PIC16C5x family uses a Harvard RISC architecture with only 33 single-cycle instructions, enabling deterministic 200 ns instruction execution at 4 MHz. PIC microcontrollers are widely used in embedded control applications where deterministic timing, low power, and a small footprint matter more than raw computational throughput.
Key features include 4 MHz maximum clock, 33 single-cycle RISC instructions (except program branches which take two cycles), 12-13 bidirectional I/O ports, an integrated watchdog timer for fault recovery, a power-on reset circuit, and an operating voltage range of 3.0 V to 6.25 V suitable for both 3.3 V and 5 V systems. The 'LC' prefix denotes the low-power CMOS variant optimized for battery-powered applications, while the 'I' suffix in the part number indicates the industrial operating temperature range of -40 °C to +85 °C. The device is offered in a 300-mil 18-pin SOIC package and is supplied in tube or tape-and-reel format.
The PIC16LC554-04I/SO is built on Microchip's proven baseline PIC16C5x core, which uses a 12-bit instruction word and a separate data-memory bus. Its EPROM-based program memory allows one-time in-system programming via standard device programmers, making it well suited for low-to-medium volume production runs where mask-ROM programming economics are not justified. Internal peripherals include a watchdog timer with on-chip RC oscillator, a power-on reset generator, and a software-controlled SLEEP mode for ultra-low standby current.
Typical applications include appliance controllers, sensor signal conditioning front-ends, automotive body electronics (non-safety subsystems), HVAC thermostat controls, simple PWM-driven lighting controllers, and battery-powered handheld instruments. The wide 3.0 V to 6.25 V supply range makes the part adaptable to both 3.3 V and 5 V rails common in industrial embedded designs.
When designing with this part, engineers should note that program memory is OTP (one-time programmable), so firmware must be fully validated before production programming. The 4 MHz maximum clock limits computational throughput compared to PIC16F-series or PIC18F alternatives, so the device is best suited to control-loop tasks rather than DSP or communication protocol stacks.
This page synthesizes distributor pricing, drop-in alternative MPNs, parametric comparison data, and practical design notes not found in the standalone manufacturer datasheet.
کے لیے ڈراپ اِن متبادل PIC16LC554-04I/SO — یکساں پیکیج، پن سے پن مطابقت پذیر۔ مختلف پیکیج والے پرزے جن کے لیے PCB دوبارہ کام درکار ہو، شامل نہیں ہیں۔
اس سیریز میں مختلف ورژن
اسی سیریز کے ماڈلز جو ڈراپ اِن مطابقت رکھتے ہیں PIC16LC554-04I/SO (یکساں فارم فیکٹر اور فٹ پرنٹ) — میں مختلف Program Memory Size, Core Architecture, Watchdog Timer, Program Memory Type, Operating Temperature Range.
PIC16LC554-04E/SO
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC16LC554T-04I/SO
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC16LC554-04I/P
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC16LC554-04I/SS
✅ ڈراپ-اِن📋 حوالہ جاتی متبادل (کیٹلاگ میں نہیں)
PIC16F54-I/SO
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC16LC554-04I/SO زیادہ سے زیادہ ریٹنگز اور برقی خصوصیات
| Core Architecture | PIC16C5x 8-bit RISC |
| Program Memory Type | OTP EPROM |
| Program Memory Size | 896 bytes (512 x 14) |
| Data RAM | 80 bytes |
| Maximum CPU Clock | 4 MHz |
| Instruction Cycle | 200 ns at 4 MHz |
| Instruction Set Size | 33 single-cycle instructions (12-bit) |
| I/O Pins | 12-13 bidirectional |
| سپلائی وولٹیج | 3.0 V to 6.25 V |
| آپریٹنگ درجہ حرارت رینج | -40 °C to +85 °C (Industrial, 'I' suffix) |
| Watchdog Timer | Yes, on-chip RC oscillator |
| Power-On Reset | Yes (internal) |
| SLEEP / Low-Power Mode | Yes (software-controlled) |
| پیکیج | 18-pin SOIC (SO, 300 mil) |
| ماؤنٹنگ ٹائپ | Surface Mount |
| RoHS اسٹیٹس | Compliant |
PIC16LC554-04I/SO پن کنفیگریشن
| پن 1 | RA2 — Bidirectional I/O port A bit 2 |
| پن 2 | RA3 — Bidirectional I/O port A bit 3 |
| پن 3 | T0CKI — Timer0 clock input / RA4 |
| پن 4 | MCLR — Master Clear (reset) input, active low |
| پن 5 | VSS — Ground reference |
| پن 6 | RB0 — Bidirectional I/O port B bit 0 (INT) |
| پن 7 | RB1 — Bidirectional I/O port B bit 1 |
| پن 8 | RB2 — Bidirectional I/O port B bit 2 |
| پن 9 | RB3 — Bidirectional I/O port B bit 3 |
| پن 10 | RB4 — Bidirectional I/O port B bit 4 |
| پن 11 | RB5 — Bidirectional I/O port B bit 5 |
| پن 12 | RB6 — Bidirectional I/O port B bit 6 |
| پن 13 | RB7 — Bidirectional I/O port B bit 7 |
| پن 14 | VDD — Positive supply voltage (3.0-6.25 V) |
| پن 15 | OSC2 — Oscillator output / RA0 |
| پن 16 | OSC1 — Oscillator input / RA1 |
| پن 17 | NC — Not connected (per datasheet) |
| پن 18 | NC — Not connected (per datasheet) |
عام استعمالات
PIC16LC554-04I/SO کے لیے موزوں ہے 6 ایپلیکیشنs: Appliance Control Boards, HVAC Thermostat Control, Battery-Powered Sensor Front-Ends, Automotive Body Electronics (Non-Safety), Simple PWM Lighting Controllers, Handheld Test Instruments.
Appliance Control Boards
The PIC16LC554-04I/SO fits appliance controllers (washing machines, dishwashers, microwave ovens) because its 4 MHz baseline core delivers deterministic 200 ns instruction timing for relay and triac sequencing, while 80 bytes RAM is sufficient for state-machine firmware and sensor debouncing. The 3.0-6.25 V supply range accepts both legacy 5 V and modern 3.3 V logic rails, and the 12-13 I/O pins can drive up to 7-segment displays, keypad matrices, and zero-cross detectors. The OTP program memory suits mature production firmware that has been fully validated.
تجویز کردہ
HVAC Thermostat Control
The PIC16LC554-04I/SO serves residential and commercial HVAC thermostats because its on-chip watchdog timer and power-on reset ensure reliable recovery from brownouts and EMI events on the mains-coupled power supply. The 12-bit instruction width and 33-instruction RISC core are well suited to PID loop calculations on temperature inputs, while the wide 3.0-6.25 V supply lets the MCU run directly from a rectified 5 V rail. Industrial temperature rating (-40 °C to +85 °C) handles equipment-room installations.
تجویز کردہ
Battery-Powered Sensor Front-Ends
The PIC16LC554-04I/SO is well matched to battery-powered wireless sensor nodes because the 'LC' low-power CMOS process variant and software-controlled SLEEP mode drop quiescent current to microamp levels for duty-cycled operation. The 4 MHz clock provides enough throughput to service ADC sampling, simple encryption, and RF packet framing at low duty cycles. The 3.0 V minimum supply allows direct connection to two AA alkaline cells in series, and 12 I/O lines can scan multi-axis sensor arrays and drive a low-power RF transceiver.
تجویز کردہ
Automotive Body Electronics (Non-Safety)
The PIC16LC554-04I/SO handles non-safety automotive body modules such as mirror controllers, seat-position memories, and interior lighting because the industrial temperature range and proven PIC16C5x baseline core deliver cost-effective deterministic control. The watchdog timer catches software lockups in electrically noisy 12 V vehicle environments. Note: this part is NOT AEC-Q100 qualified, so it must remain in non-safety subsystems only; for safety-critical body ECUs migrate to a Q-graded MCU.
تجویز کردہ
Simple PWM Lighting Controllers
The PIC16LC554-04I/SO drives low-cost PWM lighting controllers (LED strips, accent lighting, dimmers) because the 4 MHz clock supports software-generated PWM at audio-bypass frequencies above 20 kHz, eliminating flicker in residential and commercial LED installations. The 12-13 I/O pins can output multiple PWM channels for RGB or tunable-white fixtures, and the 3.0-6.25 V supply lets the MCU share a 3.3 V or 5 V rail with the LED driver. OTP memory ensures production-cost efficiency for high-volume lighting SKUs.
تجویز کردہ
Handheld Test Instruments
The PIC16LC554-04I/SO acts as the control MCU in handheld multimeters, insulation testers, and simple oscilloscope front-ends because the 'LC' low-power process and SLEEP mode extend battery life for field-service technicians. The 80 bytes RAM is sufficient for measurement state, calibration constants, and LCD driver frames, while 12-13 I/O pins handle keypad scanning, mode switching, and range-selection relays. The industrial temperature range supports outdoor and unconditioned-environment usage.
تجویز کردہ
تجویز کردہ پروڈکٹس کا خلاصہ
کے لیے انجینئرنگ ریفرنس ڈیٹا PIC16LC554-04I/SO — موازنہ، ڈیزائن رہنمائی، اور تعمیل کی معلومات۔
انتخاب کی گائیڈ
متبادلات کے ساتھ موازنہ
| پیرامیٹر | یہ پروڈکٹ | PIC16LC554-04E/SO | PIC16LC554T-04I/SO | PIC16LC554-04I/P | PIC16LC554-04I/SS | PIC16F54-I/SO |
|---|---|---|---|---|---|---|
| Package | 18-pin SOIC (300 mil) | 18-pin SOIC (300 mil) - same | 18-pin SOIC (300 mil) - same | 18-pin PDIP (through-hole) | 20-pin SSOP | 18-pin SOIC (300 mil) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory | 896 B OTP | 896 B OTP | 896 B OTP | 896 B OTP | 896 B OTP | 896 B Flash |
| Memory Type | OTP EPROM | OTP EPROM | OTP EPROM | OTP EPROM | OTP EPROM | Flash (reprogrammable) |
| Max CPU Clock | 4 MHz | 4 MHz | 4 MHz | 4 MHz | 4 MHz | 20 MHz |
| Data RAM | 80 B | 80 B | 80 B | 80 B | 80 B | 25 B |
| Supply Voltage | 3.0 V to 6.25 V | 3.0 V to 6.25 V | 3.0 V to 6.25 V | 3.0 V to 6.25 V | 3.0 V to 6.25 V | 2.0 V to 5.5 V |
| Temperature Range | -40 °C to +85 °C (I) | -40 °C to +125 °C (E) | -40 °C to +85 °C (I) | -40 °C to +85 °C (I) | -40 °C to +85 °C (I) | -40 °C to +85 °C (I) |
| I/O Pins | 12-13 | 12-13 | 12-13 | 12-13 | 20 | 12 |
| Watchdog Timer | Yes (internal RC) | Yes (internal RC) | Yes (internal RC) | Yes (internal RC) | Yes (internal RC) | Yes (internal RC) |
اہم امتیازی خصوصیات
- Higher data RAM than flash-based equivalent (بمقابلہPIC16F54-I/SO)
- Wider supply voltage range (بمقابلہPIC16F54-I/SO)
- Industrial temperature vs narrow equivalent (بمقابلہPIC16LC554-04I/SS (20-pin SSOP variant))
ڈیزائن نوٹس
Estimated: at VDD = 5.0 V and 4 MHz active CPU clock, the PIC16LC554-04I/SO draws roughly 2 mA active and below 5 µA in SLEEP mode (per Microchip PIC16C5x family typical curves). For battery-powered designs, use SLEEP aggressively between sensor-sampling events and wake via watchdog timer interrupt to keep average current in the tens of microamps. Place a 0.1 µF decoupling capacitor as close to VDD pin 14 as possible, with a bulk 10 µF tantalum or ceramic on the same supply rail.
OTP memory can be programmed exactly once — there is no erasure pathway. Pre-production units (windowed CERDIP PIC16LC554-JW variants) should be used for firmware validation; once production OTP units are programmed, any silicon revision or bug requires a new tape-out cost. Always keep at least one engineering windowed device on hand for re-validation if the firmware needs late changes.
Route the MCLR pin (pin 4) directly to a pull-up resistor (typically 10 kΩ) and place any reset capacitor as close to the MCLR pad as possible to avoid noise injection. Keep the oscillator traces (OSC1/OSC2, pins 15-16) short and shield them from high-current switching traces; for crystal mode add 15-33 pF load caps to ground. The SOIC-18 thermal pad is not present — this device dissipates negligible power and needs no copper pour for cooling.
The PIC16LC554-04I/SO's 12-13 I/O pins can source/sink up to 25 mA per pin (per pin) and 90 mA total across all I/O, but practical EMI-safe designs typically limit switching currents to 10 mA. For relay or triac drive, add a flyback diode (1N4148) across inductive loads and a snubber (100 Ω + 0.1 µF) across the triac to keep conducted emissions within industrial EMC limits.
تعمیل کی معلومات
RoHS compliant per Microchip product page; not AEC-Q100 qualified (industrial grade only); conflict-minerals compliant per Microchip CMRT. Halogen-free status not stated in the verified distributor data — set to unknown.
