PIC16LC57CT-04I/SO - 8-Bit 4MHz OTP MCU 3KB 28-SOIC | Microchip
MPN: PIC16LC57CT-04I/SO ✗ اختتامِ زندگیPIC16LC57CT-04I/SO جائزہ
A PIC microcontroller is a low-cost, high-performance 8-bit fully-static CMOS MCU based on a RISC architecture, sitting in the broader taxonomy of microcontroller -> embedded processor -> semiconductor IC. The PIC16C5X family uses 12-bit wide instructions that are highly symmetrical, yielding roughly 2:1 code compression versus competitive 8-bit MCUs in the same price tier, while the simplified instruction set reduces development time. The PIC16LC57CT-04I/SO uses an EPROM/OTP process and is part of the low-power LC variant of the PIC16C57 lineage.
Key features include a 33-instruction set, 12-bit instruction word, two 8-bit I/O ports, a watchdog timer, an 8-bit real-time counter with 8-bit prescaler, and on-chip power-on reset. The wide-body 28-SOIC (0.295-inch / 7.50mm) package gives a robust land pattern suitable for hand-rework and production-friendly assembly, while the industrial -40C to +85C temperature range supports factory-floor and outdoor installations.
Architecturally, the device separates program memory (12-bit wide OTP EPROM) from data memory (8-bit wide static RAM), which simplifies firmware development and field programming. The 4 MHz maximum oscillator frequency yields a 1 microsecond instruction cycle, sufficient for simple control loops, user-interface scan routines, and low-speed sensor polling. The CMOS design reduces quiescent current compared with NMOS predecessors and supports battery-backed applications when paired with a sleep oscillator.
Typical applications include appliance control boards, HVAC zone controllers, low-end consumer remote controls, industrial timers, vending-machine logic boards, and simple LED display drivers. The 3KB OTP memory budget accommodates state-machine firmware with look-up tables but is too small for protocol stacks such as TCP/IP or USB, so designers typically choose PIC16LC57CT-04I/SO for deterministic, loop-based control tasks rather than connected-edge applications.
When designing with this part, verify that your firmware will fit within 2K x 12 words of OTP and that you have a programming strategy (gang programmer or ICSP) ready before committing to PCB layout. Note that OTP parts cannot be reprogrammed in-circuit once sealed by the package; use the PIC16F57 equivalent (Flash) if in-system firmware updates are required.
This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes not found in the manufacturer datasheet.
کے لیے ڈراپ اِن متبادل PIC16LC57CT-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 PIC16LC57CT-04I/SO (یکساں فارم فیکٹر اور فٹ پرنٹ) — میں مختلف Timers, Package, Instruction Cycle Time, Instruction Set, Core Architecture.
PIC16LC57C-04I/SO
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC16F57-I/SO
✅ ڈراپ-اِن✗ اسٹاک سے باہر
$1.21 / یونٹ
ڈیٹا شیٹ دیکھیں →PIC16F57T-I/SO
✅ ڈراپ-اِن ⚠️ تفصیلات غیر تصدیق شدہقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC16C57C-04I/SO
✅ ڈراپ-اِن📋 حوالہ جاتی متبادل (کیٹلاگ میں نہیں)
PIC16C57C-04I/P
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC16LC57CT-04I/SO زیادہ سے زیادہ ریٹنگز اور برقی خصوصیات
| Core Architecture | PIC 8-bit RISC |
| Family | PIC16C5X |
| Program Memory Type | OTP EPROM |
| Program Memory Size | 3 KB (2K x 12) |
| RAM Size | 72 x 8 bytes |
| زیادہ سے زیادہ کلاک فریکوئنسی | 4 MHz |
| Instruction Cycle Time | 1 microsecond at 4 MHz |
| Instruction Word Width | 12 bits |
| Number of Instructions | 33 |
| I/O Ports | 2 x 8-bit |
| Timers | Watchdog timer; RTCC with 8-bit prescaler |
| سپلائی وولٹیج | 5 V (typical) |
| آپریٹنگ درجہ حرارت | -40C to +85C (industrial) |
| پیکیج | 28-SOIC (0.295 inch / 7.50 mm width) |
| ماؤنٹنگ ٹائپ | Surface Mount |
| پن کی تعداد | 28 |
| Process Technology | CMOS, EPROM/OTP |
| RoHS اسٹیٹس | Compliant |
| Lead-Free | Yes |
PIC16LC57CT-04I/SO پن کنفیگریشن
| پن 1 | RA2 — I/O port A bit 2 |
| پن 2 | RA3 — I/O port A bit 3 |
| پن 3 | RTCC — Real-Time Counter/Capture input |
| پن 4 | MCLR — Master Clear (reset) input |
| پن 5 | VSS — Ground reference |
| پن 6 | RB0 — I/O port B bit 0 |
| پن 7 | RB1 — I/O port B bit 1 |
| پن 8 | RB2 — I/O port B bit 2 |
| پن 9 | RB3 — I/O port B bit 3 |
| پن 10 | RB4 — I/O port B bit 4 |
| پن 11 | RB5 — I/O port B bit 5 |
| پن 12 | RB6 — I/O port B bit 6 |
| پن 13 | RB7 — I/O port B bit 7 |
| پن 14 | VDD — Positive supply voltage |
| پن 15 | OSC2 — Oscillator output |
| پن 16 | OSC1 — Oscillator input |
| پن 17 | RC0 — I/O port C bit 0 |
| پن 18 | RC1 — I/O port C bit 1 |
| پن 19 | RC2 — I/O port C bit 2 |
| پن 20 | RC3 — I/O port C bit 3 |
| پن 21 | RC4 — I/O port C bit 4 |
| پن 22 | RC5 — I/O port C bit 5 |
| پن 23 | RC6 — I/O port C bit 6 |
| پن 24 | RC7 — I/O port C bit 7 |
| پن 25 | RA0 — I/O port A bit 0 |
| پن 26 | RA1 — I/O port A bit 1 |
| پن 27 | T0CKI — Timer0 clock input |
| پن 28 | VDD — Positive supply voltage |
عام استعمالات
PIC16LC57CT-04I/SO کے لیے موزوں ہے 6 ایپلیکیشنs: Appliance Control Board, HVAC Zone Controller, Consumer Remote Control, Industrial Timer and Counter, Vending Machine Logic Board, Simple LED Display Driver.
Appliance Control Board
The PIC16LC57CT-04I/SO fits appliance control boards (washing machines, dishwashers, microwave ovens) because its 3 KB OTP program memory accommodates scan-loop firmware with timer state machines, while 72 bytes RAM handles button-debounce buffers and LED refresh tables. The 4 MHz clock yields 1 us instruction cycles, sufficient for relay sequencing at 10 ms resolution. The 28-SOIC wide-body package is hand-solderable for prototyping, and the -40C to +85C industrial range covers garage and kitchen environments. Unlike Flash MCUs the OTP design prevents field firmware tampering, a security plus for sealed appliance units.
تجویز کردہ
HVAC Zone Controller
The PIC16LC57CT-04I/SO suits HVAC zone damper and thermostat controllers because its RTCC with 8-bit prescaler handles thermostat timing, the watchdog timer ensures firmware recovery from brown-outs, and the CMOS LC process keeps quiescent current low for battery-backed thermostats. Two 8-bit I/O ports drive up to 16 relays or triac outputs for multi-zone dampers. The 4 MHz clock rate and 33-instruction RISC set run scan loops every 100 ms with margin. The 28-SOIC industrial temperature rating handles attic and basement installations.
تجویز کردہ
Consumer Remote Control
The PIC16LC57CT-04I/SO is ideal for low-end IR remote controls because 3 KB of OTP memory fits keypad-scanning and IR protocol tables (RC5, NEC, SIRC), and the 4 MHz core generates accurate 38 kHz carrier frequencies for IR LED modulation. The low-power CMOS LC process extends battery life versus NMOS MCUs. Two 8-bit ports scan a 4x4 matrix keypad plus IR output. The 28-SOIC wide-body is mechanically robust in handheld enclosures, and the OTP-only architecture prevents unauthorized firmware cloning of OEM remote designs.
تجویز کردہ
Industrial Timer and Counter
The PIC16LC57CT-04I/SO fits industrial timer and counter modules because its RTCC hardware counter with 8-bit prescaler handles long-duration event counting (10 ms to 65 seconds without firmware overhead), and its watchdog timer recovers from ESD-induced lockups in factory-floor environments. The 72-byte RAM stores elapsed-time counters and preset compare registers. The industrial -40C to +85C range survives unheated control cabinets. The 28-SOIC wide-body package withstands hand-soldering in repair shops. OTP memory locks the timing algorithm against field tampering, an asset for revenue-metering or process-control timers.
تجویز کردہ
Vending Machine Logic Board
The PIC16LC57CT-04I/SO works in vending-machine controller boards because its 3 KB OTP memory fits vend-state machines, coin-pulse debouncing, and price-table lookups, while 72 bytes RAM buffers keypad entries and dispense commands. Two 8-bit I/O ports drive multiplexed 7-segment displays and accept coin-mechanism pulses. The CMOS LC low-power design reduces standby current, important for unattended machines. The industrial temperature rating handles vending-cabinet thermal swings. OTP locking prevents firmware piracy that would allow free vending, a critical security requirement for unattended retail.
تجویز کردہ
Simple LED Display Driver
The PIC16LC57CT-04I/SO drives multiplexed LED signs and numeric displays because its two 8-bit I/O ports (16 pins) refresh up to 64 LEDs via charlieplexing or matrix multiplexing, and the 4 MHz clock generates clean PWM dimming at 1 kHz without flicker. 72 bytes RAM stores scroll buffers and font tables for 7-segment glyphs. The OTP-only architecture protects OEM display content. The 28-SOIC wide-body package fits compact sign-controller PCBs. The industrial temperature range tolerates outdoor signage enclosures without additional thermal management.
تجویز کردہ
تجویز کردہ پروڈکٹس کا خلاصہ
کے لیے انجینئرنگ ریفرنس ڈیٹا PIC16LC57CT-04I/SO — موازنہ، ڈیزائن رہنمائی، اور تعمیل کی معلومات۔
انتخاب کی گائیڈ
متبادلات کے ساتھ موازنہ
| پیرامیٹر | یہ پروڈکٹ | PIC16LC57C-04I/SO | PIC16F57-I/SO | PIC16F57T-I/SO | PIC16C57C-04I/SO | PIC16C57C-04I/P |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-SOIC (0.295 inch wide) | 28-SOIC - same | 28-SOIC - same | 28-SOIC - same | 28-SOIC - same | 28-PDIP - different |
| Program Memory | 3 KB OTP EPROM | 3 KB OTP EPROM | 3 KB Flash | 3 KB Flash | 3 KB OTP EPROM | 3 KB OTP EPROM |
| RAM Size | 72 bytes | 72 bytes | 72 bytes | 72 bytes | 72 bytes | 72 bytes |
| Max Clock Frequency | 4 MHz | 4 MHz | 20 MHz | 20 MHz | 4 MHz | 4 MHz |
| Instruction Cycle | 1 us at 4 MHz | 1 us at 4 MHz | 200 ns at 20 MHz | 200 ns at 20 MHz | 1 us at 4 MHz | 1 us at 4 MHz |
| ICSP Support | No (OTP) | No (OTP) | Yes (Flash) | Yes (Flash) | No (OTP) | No (OTP) |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
| Lifecycle Status | NRND | NRND | Active | Active | NRND | NRND |
اہم امتیازی خصوصیات
- Low-power CMOS LC process (بمقابلہPIC16C57C-04I/SO)
- Flash upgrade path on identical footprint (بمقابلہPIC16F57-I/SO)
- Tape-and-reel packaging for SMT (بمقابلہPIC16LC57C-04I/SO (without T suffix))
ڈیزائن نوٹس
The PIC16LC57CT-04I/SO uses One-Time Programmable EPROM and does not support In-Circuit Serial Programming (ICSP). Firmware must be committed to the part in a gang programmer prior to PCB mounting. Designers used to working with PIC16F-series Flash MCUs often mistakenly assume ICSP is available - confirm programming strategy before locking down the BOM. For prototype iteration, build a small adapter board that lets you swap PIC16LC57CT-04I/SO with a Flash-equipped PIC16F57-I/SO (pin-compatible in 28-SOIC).
Place a 100 nF decoupling capacitor as close as possible between VDD (pin 14 or pin 28) and VSS (pin 5) to suppress switching transients on the digital supply rail. For battery-backed applications, the LC (low-power CMOS) process keeps quiescent current in the microamp range during sleep, but ensure the watchdog timer is disabled in sleep unless periodic wake-up is required. A bulk 10 uF tantalum or ceramic capacitor on the VDD rail stabilizes the supply during motor-driver transients common in appliance control.
Route the OSC1/OSC2 traces (pins 15-16) short and symmetric to minimize stray capacitance that detunes the oscillator. For a 4 MHz crystal, keep the total load capacitance (crystal + stray + caps) within 15-20 pF as specified by the crystal vendor. Place MCLR (pin 4) decoupling (typically 10 kohm pull-up to VDD with 100 nF to VSS) within 5 mm of the pin to ensure a clean reset on power-up. The 28-SOIC wide-body package gives generous trace-routing channels - avoid routing noisy relay or triac lines under the IC to prevent injected glitches on the analog VDD rail.
The PIC16LC57CT-04I/SO dissipates approximately 10 mW at 4 MHz with all I/O toggling, so the SOIC package requires no special thermal management. However, in sealed appliance enclosures with ambient temperatures above 60C, the junction-to-ambient thermal resistance of approximately 80 C/W means the die will operate roughly 8C above ambient. This is well within the 125C maximum junction temperature, so no heatsink is required even at the industrial -40C to +85C range.
تعمیل کی معلومات
RoHS compliant per Microchip product page. Not AEC-Q100 qualified - migrate to PIC16F57 or PIC16F1xxx for automotive designs. Lead-free finish confirmed. Halogen-free status not explicitly stated in verified web data.
