PIC16LC558T-04E/SO - 4MHz 8-Bit OTP MCU, 18-SOIC | Microchip
Référence : PIC16LC558T-04E/SO ✓ Actif| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $2.85 | $2,85 |
| 10 | $2.56 | $25,60 |
| 100 | $2.28 | $228,00 |
| 500 | $2.05 | $1 025,00 |
| 1 000 | $1.82 | $1 820,00 |
PIC16LC558T-04E/SO Présentation
A PIC microcontroller (Programmable Intelligent Computer) is a compact RISC-based microcontroller that integrates CPU core, program memory (ROM/OTP/Flash), RAM, and peripherals (timers, I/O, ADC, interrupts) onto a single CMOS die. PIC MCUs sit in the hierarchy: microcontroller -> embedded processor -> semiconductor device. The PIC16C5x baseline family is the simplest, low-cost 12-bit-instruction PIC core, ideal for simple control tasks.
Key features of the PIC16LC558T-04E/SO include 12 I/O pins, a 33-instruction set, 25 mA source/sink per I/O, and an internal watchdog timer. The 'LC' suffix indicates the low-power CMOS process with 2.5V to 5.5V VDD range, supporting battery-friendly designs. The 'T' suffix denotes tape-and-reel packaging, and 'E' marks the enhanced automotive temperature grade (-40C to +125C).
Typical applications include industrial automation sensor interfaces, automotive body electronics, low-cost consumer appliances, simple LED drivers, and replacement of discrete logic in compact control boards. The wide VDD range and high ESD robustness suit harsh-environment designs where reliability outweighs raw performance.
When designing with this device, plan for the OTP memory constraint - code must be perfect before programming. Add a 0.1 uF ceramic decoupling capacitor close to VDD and follow Microchip's PIC16C5x programming and in-circuit serial programming (ICSP) guidelines. This page combines distributor pricing, drop-in same-package alternatives, and engineering guidance not found in the standalone datasheet.
Alternatives de remplacement direct pour PIC16LC558T-04E/SO — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Variantes de cette série
Modèles de la même série directement compatibles avec PIC16LC558T-04E/SO (même facteur de forme et même empreinte) — différant par Package, Watchdog Timer, Operating Temperature, Timers, I/O Pins.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
PIC16LC558-04E/SO
✅ Remplacement direct✓ En stock
$2.18 / unité
Voir la fiche technique →PIC16LC558T-04/SO
✅ Remplacement direct✓ En stock
$2.65 / unité
Voir la fiche technique →PIC16LC558-04/SO
✅ Remplacement direct✓ En stock
$2.85 / unité
Voir la fiche technique →PIC16C558-04E/SO
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
PIC16F506-I/SO
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
PIC16LC558T-04E/SO Valeurs maximales et caractéristiques électriques
| Core Architecture | PIC16C (8-bit RISC) |
| Program Memory Type | OTP (One-Time Programmable) |
| Program Memory Size | 3.5 KB (2K x 14) |
| CPU Speed | 4 MHz |
| Supply Voltage (VDD) | 2.5 V to 5.5 V |
| Température de fonctionnement | -40C to +125C (Enhanced grade) |
| Number of I/O Pins | 12 |
| Instruction Set Width | 12-bit |
| Number of Instructions | 33 |
| Oscillator Type | External |
| Watchdog Timer | Yes (internal) |
| Boîtier | 18-SOIC (SO, 0.295" / 7.50 mm width) |
| Type de montage | Surface Mount |
| Statut RoHS | Compliant |
| Lead-Free | Yes |
Configuration des broches de PIC16LC558T-04E/SO
| Broche 1 | RA2 — Bidirectional I/O port A bit 2 |
| Broche 2 | RA3 — Bidirectional I/O port A bit 3 |
| Broche 3 | T0CKI — Timer0 clock input |
| Broche 4 | MCLR — Master Clear (reset) input, active low |
| Broche 5 | VSS — Ground reference |
| Broche 6 | RB0 — Bidirectional I/O port B bit 0 |
| Broche 7 | RB1 — Bidirectional I/O port B bit 1 |
| Broche 8 | RB2 — Bidirectional I/O port B bit 2 |
| Broche 9 | RB3 — Bidirectional I/O port B bit 3 |
| Broche 10 | RB4 — Bidirectional I/O port B bit 4 |
| Broche 11 | RB5 — Bidirectional I/O port B bit 5 |
| Broche 12 | RB6 — Bidirectional I/O port B bit 6 |
| Broche 13 | RB7 — Bidirectional I/O port B bit 7 |
| Broche 14 | OSC1 — External oscillator input |
| Broche 15 | OSC2 — External oscillator output |
| Broche 16 | VDD — Positive supply voltage |
| Broche 17 | RA0 — Bidirectional I/O port A bit 0 |
| Broche 18 | RA1 — Bidirectional I/O port A bit 1 |
Applications typiques
PIC16LC558T-04E/SO convient pour 6 applications: Industrial Sensor Interface, Automotive Body Electronics, Low-Cost Consumer Appliance Control, Simple LED Driver / Lighting Controller, Battery-Powered Remote Control, Replacement of Discrete Logic.
Industrial Sensor Interface
The PIC16LC558T-04E/SO fits industrial sensor interfaces because its 2.5V to 5.5V wide VDD range accepts both 3.3V and 5V sensor rails without level shifters. Its 12 I/O pins handle multi-channel digital sensor reads and relay control, and the -40C to +125C Enhanced temperature grade survives factory-floor thermal swings. The 33-instruction RISC core executes sensor polling loops in microseconds, with the 4 MHz clock yielding a 1 us instruction cycle. Compared to a discrete 555-timer interface, this MCU enables firmware-defined thresholds, calibration coefficients, and Modbus-style output. Use it for limit-switch debouncing, thermocouple cold-junction compensation front-ends, and 4-20 mA loop monitoring where its low Iq and rugged CMOS input structure reduce BOM cost. The OTP memory locks firmware against accidental field reprogramming in safety-critical sensors.
Recommandé
Automotive Body Electronics
In automotive body electronics the PIC16LC558T-04E/SO serves lighting controllers, mirror-adjust modules, and seat-position memory units. Its -40C to +125C Enhanced grade meets cabin-temperature requirements per Microchip product classifications, while the wide VDD range tolerates load-dump transients filtered at the connector. The 12-bit instruction word and 33-instruction set let engineers write compact CAN-LIN gateway routines in assembly, reducing code footprint. The OTP memory locks calibration data at production - critical for safety features that must not be field-modified. Compared with newer PIC16F parts, the LC558 trades Flash flexibility for cost and OTP permanence. Pair it with automotive-grade voltage regulators like MCP1790 for a complete under-dash module. This is a classic automotive MCU for high-volume programs where firmware is stable.
Recommandé
Low-Cost Consumer Appliance Control
The PIC16LC558T-04E/SO is a strong fit for low-cost consumer appliance control boards such as coffee makers, blenders, and small kitchen devices. The 4 MHz CPU provides adequate processing for temperature profiling, timer logic, and button-matrix scanning, while 12 I/O pins drive seven-segment displays, keypads, and triac-control outputs. The 2.5V to 5.5V VDD range supports direct connection to a rectified 5V supply or a 3.3V logic rail. OTP memory locks the appliance firmware to prevent end-user tampering and reduce warranty returns. Compared with a microcontroller + EEPROM + glue-logic discrete solution, the PIC16LC558T-04E/SO integrates the entire controller into a single SOIC-18 IC. Its low-cost structure (~$1.82 at qty 1000 per 2026-09-22 pricing) makes it competitive with timer ICs in entry-level appliances.
Recommandé
Simple LED Driver / Lighting Controller
The PIC16LC558T-04E/SO drives PWM-controlled LED strings and dimmer circuits in commercial-lighting fixtures. Its 12 I/O deliver up to six PWM channels at 4 MHz (giving 244 Hz PWM at 8-bit resolution), suitable for RGB color-mixing or warm-dimming profiles. The wide VDD range accepts 24V industrial-lighting rails after external regulation, and the Enhanced -40C to +125C grade tolerates enclosed-fixture heat soak. Compared to dedicated LED-driver ICs, this MCU offers flexible firmware-defined dim curves, DMX-512 input parsing, and ambient-light sensor feedback all in one part. The OTP memory secures OEM firmware against aftermarket copies. Per Microchip's PIC16C5x datasheet, the 25 mA source/sink per pin can directly drive small MOSFET gates or low-current LED arrays without buffers.
Battery-Powered Remote Control
In battery-powered remote controls and wireless key fobs, the PIC16LC558T-04E/SO achieves multi-year coin-cell life thanks to its CMOS 'LC' low-power process. Operating down to 2.5V lets it run from two AA cells or a single CR2032 directly, eliminating boost converters. The 12 I/O handle button-matrix scans (up to 16 keys) and IR-LED modulation for TV-style remotes, with the 4 MHz CPU executing modulation loops without timing jitter. The OTP memory locks pairing codes at production. Compared with PIC16LF parts the LC558 trades a few microamps of Iq for raw VDD flexibility and lower unit cost. Pair with a 38 kHz IR receiver like TSOP38238 for a complete two-way remote system that survives the consumer's couch cushions for years.
Replacement of Discrete Logic
The PIC16LC558T-04E/SO replaces discrete 74HC logic gates in glue-logic designs where a single SOIC-18 MCU costs less than the 3-5 logic ICs it replaces. A 33-instruction RISC core can implement state machines, timing delays, and signal conditioning all in firmware. The 12 I/O handle multiple parallel signals with 25 mA drive, while the Enhanced -40C to +125C grade matches industrial discrete-logic specs. Compared with discrete logic, this MCU enables late-stage design changes via firmware instead of PCB re-spin, reducing time-to-market. The OTP memory locks the final logic to prevent field bugs from firmware corruption. Designers port legacy 74HC schematics to PIC assembly, often reducing BOM line count by 60% per Microchip application notes on logic-replacement MCUs.
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour PIC16LC558T-04E/SO — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | PIC16LC558-04E/SO | PIC16LC558T-04/SO | PIC16LC558-04/SO | PIC16C558-04E/SO | PIC16F506-I/SO |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 18-SOIC | 18-SOIC - same | 18-SOIC - same | 18-SOIC - same | 18-SOIC - same | 18-SOIC - same |
| CPU Speed | 4 MHz | 4 MHz | 4 MHz | 4 MHz | 4 MHz | 20 MHz |
| Program Memory | 3.5 KB OTP | 3.5 KB OTP | 3.5 KB OTP | 3.5 KB OTP | 3.5 KB OTP | 1.5 KB Flash |
| Supply Voltage | 2.5V to 5.5V | 2.5V to 5.5V | 2.5V to 5.5V | 2.5V to 5.5V | 3.0V to 5.5V | 2.0V to 5.5V |
| Temperature Grade | -40C to +125C (Enhanced) | -40C to +125C (Enhanced) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +125C (Enhanced) | -40C to +85C (Industrial) |
| Memory Type | OTP | OTP | OTP | OTP | OTP | Flash (re-programmable) |
| Programming Method | Parallel HV only | Parallel HV only | Parallel HV only | Parallel HV only | Parallel HV only | ICSP + parallel HV |
| Approx Price (qty 1) | $2.85 | $2.85 | $2.75 | $2.65 | $2.50 | $1.95 |
Principaux différenciateurs
- Enhanced -40C to +125C automotive temperature grade (vs PIC16LC558T-04/SO)
- Wide 2.5V to 5.5V VDD range for battery and 5V-rail compatibility (vs PIC16C558-04E/SO)
- Flash re-programmability and 5x faster CPU (vs PIC16F506-I/SO)
Notes de conception
Place a 0.1 uF ceramic decoupling capacitor within 5 mm of the VDD pin (pin 16) and a bulk 10 uF tantalum or aluminum electrolytic capacitor at the board power-entry point. The PIC16LC558T-04E/SO can operate down to 2.5V, so a low-dropout regulator such as MCP1700 is preferred over a 78L05 for battery applications. Estimated: at 5V VDD and 4 MHz active CPU, the MCU draws approximately 2 mA per Microchip PIC16C5x datasheet DC characteristics, so total Iq in sleep is more critical than active current for battery life calculations.
Route the external oscillator traces (OSC1/OSC2, pins 14-15) as short as possible, with a ground guard ring around the crystal or resonator. Keep the MCLR pin (pin 4) trace short to avoid noise-induced resets; use a 10 kohm pull-up to VDD if MCLR is not driven by an external supervisor. Estimated: at 4 MHz clock, trace lengths under 10 mm are sufficient to avoid oscillator over- or under-shoot per typical CMOS-oscillator layout practice.
The PIC16LC558T-04E/SO uses OTP (One-Time Programmable) memory - once programmed, the firmware cannot be erased or rewritten. Always verify firmware on a PIC16F-series equivalent (e.g. PIC16F506-I/SO) or a windowed CERDIP PIC16C558JW before committing to OTP. Programming must be done via parallel high-voltage programming on RB6/RB7 (pins 12-13), which become general I/O after reset; do not use these pins for pushbutton inputs that could conflict with the programmer. Verify VDD rises within Microchip's specified power-on-reset timing window to avoid code-execution faults on cold start.
Informations de conformité
RoHS compliant per Microchip product page. Enhanced temperature grade (-40C to +125C) supports automotive environments but part is not AEC-Q100 qualified - for AEC-Q100 designs use PIC16F family automotive-grade variants. Lead-free and halogen-free per Microchip environmental compliance documentation.
