PIC16LC57CT-04I/SO - 8-Bit 4MHz OTP MCU 3KB 28-SOIC | Microchip
Teilenummer: PIC16LC57CT-04I/SO ✗ Abgekündigt| Menge | Stückpreis | Gesamt |
|---|---|---|
| 1 | $5.4 | $5,40 |
| 10 | $4.85 | $48,50 |
| 100 | $4.1 | $410,00 |
| 500 | $3.65 | $1.825,00 |
| 1.000 | $3.2 | $3.200,00 |
PIC16LC57CT-04I/SO Übersicht
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.
Drop-in-Alternativen für PIC16LC57CT-04I/SO – 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 PIC16LC57CT-04I/SO (gleiche Bauform und Footprint) – abweichend in Timers, Package, Instruction Cycle Time, Instruction Set, Core Architecture.
Schnellvergleichstool – Wählen Sie Alternativbauteile für den Direktvergleich:
PIC16LC57C-04I/SO
✅ Drop-In✓ Auf Lager
$2.05 / Stück
Datenblatt ansehen →PIC16F57-I/SO
✅ Drop-In✓ Auf Lager
$1.21 / Stück
Datenblatt ansehen →PIC16F57T-I/SO
✅ Drop-In ⚠️ Spezifikationen ungeprüft✓ Auf Lager
$0.65 / Stück
Datenblatt ansehen →PIC16C57C-04I/SO
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
PIC16C57C-04I/P
✅ Drop-In✓ Auf Lager
$2.05 / Stück
Datenblatt ansehen →PIC16LC57CT-04I/SO Grenzwerte & elektrische Eigenschaften
| 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 |
| Maximale Taktfrequenz | 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 |
| Versorgungsspannung | 5 V (typical) |
| Betriebstemperatur | -40C to +85C (industrial) |
| Gehäuse | 28-SOIC (0.295 inch / 7.50 mm width) |
| Montageart | Surface Mount |
| Pin-Anzahl | 28 |
| Process Technology | CMOS, EPROM/OTP |
| RoHS-Status | Compliant |
| Lead-Free | Yes |
PIC16LC57CT-04I/SO Pin-Konfiguration
| Pin 1 | RA2 — I/O port A bit 2 |
| Pin 2 | RA3 — I/O port A bit 3 |
| Pin 3 | RTCC — Real-Time Counter/Capture input |
| Pin 4 | MCLR — Master Clear (reset) input |
| Pin 5 | VSS — Ground reference |
| Pin 6 | RB0 — I/O port B bit 0 |
| Pin 7 | RB1 — I/O port B bit 1 |
| Pin 8 | RB2 — I/O port B bit 2 |
| Pin 9 | RB3 — I/O port B bit 3 |
| Pin 10 | RB4 — I/O port B bit 4 |
| Pin 11 | RB5 — I/O port B bit 5 |
| Pin 12 | RB6 — I/O port B bit 6 |
| Pin 13 | RB7 — I/O port B bit 7 |
| Pin 14 | VDD — Positive supply voltage |
| Pin 15 | OSC2 — Oscillator output |
| Pin 16 | OSC1 — Oscillator input |
| Pin 17 | RC0 — I/O port C bit 0 |
| Pin 18 | RC1 — I/O port C bit 1 |
| Pin 19 | RC2 — I/O port C bit 2 |
| Pin 20 | RC3 — I/O port C bit 3 |
| Pin 21 | RC4 — I/O port C bit 4 |
| Pin 22 | RC5 — I/O port C bit 5 |
| Pin 23 | RC6 — I/O port C bit 6 |
| Pin 24 | RC7 — I/O port C bit 7 |
| Pin 25 | RA0 — I/O port A bit 0 |
| Pin 26 | RA1 — I/O port A bit 1 |
| Pin 27 | T0CKI — Timer0 clock input |
| Pin 28 | VDD — Positive supply voltage |
Typische Anwendungen
PIC16LC57CT-04I/SO ist geeignet für 6 Anwendungs: 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.
Empfohlen
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.
Empfohlen
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.
Empfohlen
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.
Empfohlen
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.
Empfohlen
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.
Empfohlen
Zusammenfassung der empfohlenen Produkte
Technische Referenzdaten für PIC16LC57CT-04I/SO – Vergleich, Designhinweise und Compliance-Informationen.
Auswahlhilfe
Vergleich mit Alternativen
| Parameter | Dieses Produkt | 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 |
Wichtigste Unterscheidungsmerkmale
- Low-power CMOS LC process (vs. PIC16C57C-04I/SO)
- Flash upgrade path on identical footprint (vs. PIC16F57-I/SO)
- Tape-and-reel packaging for SMT (vs. PIC16LC57C-04I/SO (without T suffix))
Designhinweise
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.
Compliance-Informationen
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.
