PIC16LC554T-04I/SO - 8-bit 4MHz OTP MCU 896B | Microchip
MPN: PIC16LC554T-04I/SO ✓ فعالPIC16LC554T-04I/SO جائزہ
An 8-bit PIC microcontroller is a class of CMOS RISC microprocessor that integrates CPU core, non-volatile program memory (ROM/EPROM/OTP/Flash), data RAM, working registers, and programmable I/O into a single chip. Within the broader taxonomy, PIC MCUs sit under microcontroller (MCU) -> embedded processor -> semiconductor IC. The PIC16C5X baseline architecture is the entry-level tier in Microchip's PIC portfolio, optimized for cost-sensitive, deterministic, low-to-medium complexity embedded control where every cycle must be predictable.
Key features include a 4 MHz oscillator, hardware reset, watchdog timer, power-on reset, and 12 bidirectional I/O lines multiplexed with peripheral functions. The 8-bit-wide data path, 7-level hardware stack, and 12-bit instruction word yield compact code density typical of baseline PIC silicon. The 'LC' voltage class explicitly targets low-voltage operation down to 3.0 V, distinguishing it from the 4.5 V-minimum PIC16C554 and from PIC16F flash-equipped variants.
The PIC16LC554T-04I/SO uses a RISC Harvard architecture with separate program and data buses, allowing simultaneous instruction fetch and operand access. Its 2-level deep stack and 25-byte register file limit interrupt depth but maximize interrupt response predictability. The 'T' suffix in the MPN denotes tape-and-reel packaging; '-04' denotes 4 MHz maximum clock; the 'I' suffix indicates the industrial operating temperature range of -40C to +85C; 'SO' denotes 18-pin SOIC.
Typical applications include appliance control, security-system keypads, simple sensor interfaces, low-end consumer electronics, hobby/educational projects, and any cost-constrained embedded design that benefits from a stable, well-documented 8-bit platform with mature toolchain support. The wide 3.0-6.25 V input range makes it compatible with both 3.3 V and 5 V system rails.
When designing with the PIC16LC554T-04I/SO, account for OTP (one-time programmable) limitations: firmware cannot be field-upgraded after programming. Plan code carefully, leave margin for late-stage feature additions, and consider PIC16F flash alternatives (e.g. PIC16F505, PIC16F506) for prototypes or designs requiring firmware iteration. The 80-byte RAM budget is tight by modern standards - favor compact variables and reuse register banks.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, helping engineers quickly evaluate whether the PIC16LC554T-04I/SO fits their application or whether a flash-based successor is a more appropriate choice.
کے لیے ڈراپ اِن متبادل PIC16LC554T-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 PIC16LC554T-04I/SO (یکساں فارم فیکٹر اور فٹ پرنٹ) — میں مختلف Core Architecture, Program Memory Size, Package, Watchdog Timer, Operating Temperature Range.
PIC16LC554T-04/SO
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC16C554T-04I/SO
✅ ڈراپ-اِن📋 حوالہ جاتی متبادل (کیٹلاگ میں نہیں)
PIC16LC554T-04I/SS
✅ ڈراپ-اِن ⚠️ تفصیلات غیر تصدیق شدہقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC16LC554T-04I/SO زیادہ سے زیادہ ریٹنگز اور برقی خصوصیات
| Core Architecture | 8-bit PIC RISC |
| Series | PIC 16C |
| Core Sub-family | PIC16C5X (baseline) |
| Program Memory Type | OTP (One-Time Programmable) EPROM |
| Program Memory Size | 896 B (512 x 14 bit) |
| RAM Size | 80 B |
| زیادہ سے زیادہ کلاک فریکوئنسی | 4 MHz |
| Supply Voltage Range | 3.0 V to 6.25 V |
| Number of I/O Pins | 12 |
| Instruction Set Width | 12 bit |
| Number of Instructions | 33 single-word/cycle |
| پیکیج | 18-pin SOIC (SO) |
| ماؤنٹنگ ٹائپ | Surface Mount |
| آپریٹنگ درجہ حرارت رینج | -40C to +85C (industrial, 'I' grade) |
| Delivery Form | Tape & Reel ('T' suffix) |
| Watchdog Timer | Yes (on-chip WDT) |
| Power-on Reset | Yes |
PIC16LC554T-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 |
| 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 | OSC1/CLKIN — Oscillator crystal input / external clock in |
| پن 16 | OSC2/CLKOUT — Oscillator crystal output / clock out |
| پن 17 | RA0 — Bidirectional I/O port A bit 0 |
| پن 18 | RA1 — Bidirectional I/O port A bit 1 |
عام استعمالات
PIC16LC554T-04I/SO کے لیے موزوں ہے 6 ایپلیکیشنs: Appliance Control (Washing Machine, Microwave, Fan), Security System Keypad and Sensor Interface, Low-End Consumer Electronics (Toy, Remote, Timer), Hobby and Educational MCU Projects, Simple Sensor Interface and Signal Conditioning, Industrial Sensor and Control Modules.
Appliance Control (Washing Machine, Microwave, Fan)
The PIC16LC554T-04I/SO is well-suited for major-appliance control boards where the firmware is finalized at production. Its 12 I/O pins can drive relay drivers, triac interfaces for AC loads, and read keypads/temperature sensors. The 3.0-6.25 V supply range allows direct operation from a 5 V regulator, while 80 B RAM and 896 B OTP are sufficient for state-machine based wash-cycle or cook-profile logic. The 4 MHz clock with 1 us instruction cycle delivers deterministic timing critical for zero-cross triac firing and sensor sampling. Watchdog timer prevents lockup in unattended operation.
تجویز کردہ
Security System Keypad and Sensor Interface
For PIR motion detectors, door/window sensors, and small alarm keypads, the PIC16LC554T-04I/SO provides a low-cost, low-power 8-bit control core. Its 12 I/O accommodates a 4x4 matrix keypad scan, piezo buzzer drive, LED indicators, and an RF or wired interface to a central panel. The deterministic single-cycle instruction set guarantees bounded response time for alarm-event signaling. Industrial -40C to +85C temperature grade ensures reliable operation in unheated garages or outdoor enclosures. OTP prevents field firmware tampering, a security advantage.
تجویز کردہ
Low-End Consumer Electronics (Toy, Remote, Timer)
Toy controllers, simple IR remote controls, kitchen timers, and novelty consumer devices benefit from the PIC16LC554T-04I/SO's sub-$2 cost in volume and 18-pin SOIC form factor. The 33-instruction baseline set is straightforward to hand-code in assembly for simple sequence logic, while the C compiler (XC8 free mode) supports small C projects within the 896 B OTP budget. The 3.0 V minimum supply permits 2-AA-battery operation through a low-drop regulator. Its deterministic interrupt response is well matched to IR frame timing in remote controls.
تجویز کردہ
Hobby and Educational MCU Projects
The PIC16LC554T-04I/SO is widely used in university embedded-systems courses and maker projects because of its simple baseline architecture and mature, free MPLAB X + XC8 toolchain. Students learn assembly programming on a 33-instruction RISC core, then graduate to C. The 18-pin SOIC is hand-solderable on breakout boards. The PICkit 3/4 programmer supports in-circuit serial programming on a breadboard. Industrial temperature grade lets student projects double as outdoor sensors. PIC microcontroller's huge codebase of community examples accelerates learning.
تجویز کردہ
Simple Sensor Interface and Signal Conditioning
For digital-output sensors (Hall-effect, PIR, reed switches, simple thermistor front-ends with external ADC), the PIC16LC554T-04I/SO provides threshold comparison, debouncing, and alarm-logic functions. The 12 I/O allow direct connection to multiple sensors and actuators without external mux logic. The 4 MHz clock supports software UART-style bit-banged serial output for sensor data reporting at low baud rates. The PIC16C5X's 2-level stack limits interrupt nesting but provides fully predictable response to sensor events.
تجویز کردہ
Industrial Sensor and Control Modules
Inside industrial control cabinets, the PIC16LC554T-04I/SO handles low-speed logic for relay sequencing, status-LED multiplexing, and Modbus-RTU slave interfaces at 9600 baud. The -40C to +85C industrial temperature range and 5 V supply compatibility suit factory-floor environments. The 80 B RAM is sufficient for a small RTU register file. The OTP memory prevents unauthorized firmware modification in fielded equipment. The 12-bit instruction width yields compact code, allowing complex protocol stacks in 896 B.
تجویز کردہ
تجویز کردہ پروڈکٹس کا خلاصہ
کے لیے انجینئرنگ ریفرنس ڈیٹا PIC16LC554T-04I/SO — موازنہ، ڈیزائن رہنمائی، اور تعمیل کی معلومات۔
انتخاب کی گائیڈ
متبادلات کے ساتھ موازنہ
| پیرامیٹر | یہ پروڈکٹ | PIC16LC554T-04/SO | PIC16C554T-04I/SO | PIC16LC554T-04I/SS |
|---|---|---|---|---|
| Package | 18-SOIC | 18-SOIC | 18-SOIC | 20-SSOP |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory | 896 B OTP | 896 B OTP | 896 B OTP | 896 B OTP |
| Maximum Clock | 4 MHz | 4 MHz | 4 MHz | 4 MHz |
| Supply Voltage Range | 3.0 V to 6.25 V | 3.0 V to 6.25 V | 4.5 V to 5.5 V | 3.0 V to 6.25 V |
| Operating Temperature | -40C to +85C (Industrial) | 0C to +70C (Commercial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) |
| RAM Size | 80 B | 80 B | 80 B | 80 B |
| Number of I/O | 12 | 12 | 12 | 12 |
| Memory Type | OTP EPROM | OTP EPROM | OTP EPROM | OTP EPROM |
اہم امتیازی خصوصیات
- Low-voltage 3.0 V minimum supply (بمقابلہPIC16C554T-04I/SO)
- Industrial temperature grade (بمقابلہPIC16LC554T-04/SO)
- Mature, deterministic baseline architecture (بمقابلہPIC16F505T-I/SL)
ڈیزائن نوٹس
PIC16LC554T-04I/SO uses OTP (one-time programmable) EPROM, not Flash. Once programmed, the firmware cannot be erased or rewritten. Do not use this part for prototype or beta-stage designs where firmware iteration is expected. For development cycles, use the PIC16F505 or PIC16F506 Flash-based successor; once firmware is finalized, port the binary to PIC16LC554T-04I/SO for production cost reduction. Bypass VDD to VSS with a 100 nF ceramic capacitor placed within 5 mm of the supply pins.
The 'LC' low-voltage class requires only 3.0 V minimum supply, but operation at 3.0 V requires the 4 MHz internal oscillator configuration; at higher voltages (5 V nominal), more headroom is available. The MCLR reset pin must be tied to VDD through a 10 kohm pull-up resistor for normal operation; a momentary push-button to ground provides manual reset. Decoupling: place a 10 uF bulk electrolytic and a 100 nF ceramic across VDD-VSS near the MCU.
Keep the crystal or resonator traces short and symmetric; route OSC1 and OSC2 with equal length and guard-ground the area to reduce EMI coupling. Place the MCLR pull-up close to the MCU pin. Avoid running high-speed switching signals (relay coils, triac outputs) directly under the oscillator area. For 18-pin SOIC, hand-soldering is straightforward; for production, follow J-STD-020 MSL-1 floor-life guidelines (this part is moisture-insensitive).
تعمیل کی معلومات
RoHS and lead-free compliant per Microchip product page; REACH compliance per EU regulation; conflict-minerals statement available from Microchip. Not AEC-Q100 qualified; not suitable for under-hood automotive applications.
