PIC16LC558T-04E/SO - 4MHz 8-Bit OTP MCU, 18-SOIC | Microchip
MPN: PIC16LC558T-04E/SO ✓ Hoạt độngPIC16LC558T-04E/SO Tóm tắt
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.
Bộ thay thế dễ dàng lắp đặt cho PIC16LC558T-04E/SO — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với PIC16LC558T-04E/SO (cùng hình factor và footprint) — khác nhau ở Package, Watchdog Timer, Operating Temperature, Timers, I/O Pins.
PIC16LC558-04E/SO
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16LC558T-04/SO
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16LC558-04/SO
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C558-04E/SO
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC16F506-I/SO
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC16LC558T-04E/SO Tỷ lệ tối đa & tính chất điện
| 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 |
| Nhiệt độ hoạt động | -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) |
| Hộp | 18-SOIC (SO, 0.295" / 7.50 mm width) |
| Kiểu lắp đặt | Surface Mount |
| Trạng thái RoHS | Compliant |
| Lead-Free | Yes |
Cấu hình chân PIC16LC558T-04E/SO
| Chân 1 | RA2 — Bidirectional I/O port A bit 2 |
| Chân 2 | RA3 — Bidirectional I/O port A bit 3 |
| Chân 3 | T0CKI — Timer0 clock input |
| Chân 4 | MCLR — Master Clear (reset) input, active low |
| Chân 5 | VSS — Ground reference |
| Chân 6 | RB0 — Bidirectional I/O port B bit 0 |
| Chân 7 | RB1 — Bidirectional I/O port B bit 1 |
| Chân 8 | RB2 — Bidirectional I/O port B bit 2 |
| Chân 9 | RB3 — Bidirectional I/O port B bit 3 |
| Chân 10 | RB4 — Bidirectional I/O port B bit 4 |
| Chân 11 | RB5 — Bidirectional I/O port B bit 5 |
| Chân 12 | RB6 — Bidirectional I/O port B bit 6 |
| Chân 13 | RB7 — Bidirectional I/O port B bit 7 |
| Chân 14 | OSC1 — External oscillator input |
| Chân 15 | OSC2 — External oscillator output |
| Chân 16 | VDD — Positive supply voltage |
| Chân 17 | RA0 — Bidirectional I/O port A bit 0 |
| Chân 18 | RA1 — Bidirectional I/O port A bit 1 |
Ứng dụng tiêu biểu
PIC16LC558T-04E/SO phù hợp cho 6 Áp dụngs: 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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC16LC558T-04E/SO — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | 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 |
Bảo phân biệt quan trọng
- Enhanced -40C to +125C automotive temperature grade (vsPIC16LC558T-04/SO)
- Wide 2.5V to 5.5V VDD range for battery and 5V-rail compatibility (vsPIC16C558-04E/SO)
- Flash re-programmability and 5x faster CPU (vsPIC16F506-I/SO)
Ghi chú thiết kế
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.
Thông tin tuân thủ
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.
