PIC16LC558T-04I/SS - 4MHz 8-Bit OTP MCU, 20-SSOP | Microchip
Teilenummer: PIC16LC558T-04I/SS ✗ Abgekündigt| Menge | Stückpreis | Gesamt |
|---|---|---|
| 1 | $2.95 | $2,95 |
| 10 | $2.65 | $26,50 |
| 100 | $2.35 | $235,00 |
| 500 | $2.1 | $1.050,00 |
| 1.000 | $1.85 | $1.850,00 |
PIC16LC558T-04I/SS Übersicht
An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, program memory (ROM/EPROM/Flash/OTP), data RAM, and peripherals such as timers, I/O ports, and reset circuitry. The PIC16LC558 belongs to the PIC16C5x baseline family, characterized by a 12-bit instruction word, a RISC architecture with only 33 single-cycle instructions, and an OTP program memory optimized for low-to-medium volume production runs where re-programmability is not required. Within the broader taxonomy, this device sits in the hierarchy MCU -> 8-bit microcontroller -> PIC16 baseline -> Microchip PIC16C5x family.
Key specifications include 13 I/O pins with individual direction control, an operating voltage range of 2.5 V to 5.5 V (3.3 V / 5 V dual-rail capable), a maximum operating frequency of 4 MHz, and a commercial/industrial temperature range of -40 C to +85 C. The device is offered in 20-SSOP (5.30 mm body width) packaging on tape-and-reel for high-volume assembly.
Architecturally, the PIC16LC558 uses a Harvard-style bus with separate program and data paths, an 8-level deep hardware stack, and direct/indirect addressing modes. The OTP memory allows one-time factory or in-circuit programming using Microchip's ICSP protocol via RB6/RB7 pins, while the LC suffix denotes the low-voltage variant optimized for battery and 3.3 V systems.
Typical applications include consumer appliances, sensor interface modules, simple motor control, LED drivers, security keypads, and low-cost industrial controllers. The combination of low pin count (20 SSOP), minimal external component count, and proven PIC16C5x instruction set makes it attractive for cost-sensitive legacy designs and industrial replacement cycles.
Designers should note that this part is now in Obsolete lifecycle status with limited distributor availability, and any new design should consider the PIC16F1xxx family (Flash-based) for long-term supply security. Verify PCN/EOLN notifications and consider stock reserves for production continuity.
This page synthesizes distributor pricing, drop-in alternatives, and lifecycle guidance not found in the manufacturer datasheet alone, helping procurement and engineering teams make informed sourcing decisions for this legacy part.
Drop-in-Alternativen für PIC16LC558T-04I/SS – 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 PIC16LC558T-04I/SS (gleiche Bauform und Footprint) – abweichend in RAM Size, Program Memory Size, Package, Peripherals, Series.
Schnellvergleichstool – Wählen Sie Alternativbauteile für den Direktvergleich:
PIC16LC558T-04/SS
✅ Drop-In✓ Auf Lager
$3.3 / Stück
Datenblatt ansehen →PIC16LC558-04I/SS
✅ Drop-In✓ Auf Lager
$1.38 / Stück
Datenblatt ansehen →PIC16C558-04I/SS
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
PIC16F54-I/SS
✅ Drop-In ⚠️ Spezifikationen ungeprüft✓ Auf Lager
$0.68 / Stück
Datenblatt ansehen →PIC16F57-I/SS
✅ Drop-In ⚠️ Spezifikationen ungeprüft📋 Referenzalternative (nicht im Katalog)
PIC16C554T-04I/SS
✅ Drop-In ⚠️ Spezifikationen ungeprüft✓ Auf Lager
$1.09 / Stück
Datenblatt ansehen →PIC16LC558T-04I/SS Grenzwerte & elektrische Eigenschaften
| Core Processor | PIC |
| Core Size | 8-Bit |
| Series | PIC16C5x |
| Program Memory Size | 3.5 KB (2K x 14) |
| Program Memory Type | OTP (One-Time Programmable) |
| RAM Size | 128 x 8 bytes |
| Maximum Clock Speed | 4 MHz |
| Number of I/O Pins | 13 |
| Supply Voltage Range | 2.5 V to 5.5 V (3.3 V / 5 V) |
| Peripherals | Power-On Reset (POR), Watchdog Timer (WDT) |
| Connectivity | None (standalone MCU) |
| Betriebstemperaturbereich | -40 C to +85 C (Industrial) |
| Gehäuse / Bauform | 20-SSOP (5.30 mm body width) |
| Montageart | Surface Mount |
| Data Converters | None (no ADC on PIC16C558) |
PIC16LC558T-04I/SS Pin-Konfiguration
| Pin 1 | RA2 — Port A bit 2 (digital I/O) |
| Pin 2 | RA3 — Port A bit 3 (digital I/O) |
| Pin 3 | RA4/T0CKI — Port A bit 4 / Timer0 clock input |
| Pin 4 | MCLR — Master Clear reset input (active low) |
| Pin 5 | VSS — Ground reference |
| Pin 6 | RB0/INT — Port B bit 0 / External interrupt input |
| Pin 7 | RB1 — Port B bit 1 (digital I/O) |
| Pin 8 | RB2 — Port B bit 2 (digital I/O) |
| Pin 9 | RB3 — Port B bit 3 (digital I/O) |
| Pin 10 | RB4 — Port B bit 4 (digital I/O) |
| Pin 11 | RB5 — Port B bit 5 (digital I/O) |
| Pin 12 | RB6 — Port B bit 6 / ICSP clock |
| Pin 13 | RB7 — Port B bit 7 / ICSP data |
| Pin 14 | VDD — Positive supply voltage (2.5 V to 5.5 V) |
| Pin 15 | OSC2/CLKOUT — Oscillator output / Clock out |
| Pin 16 | OSC1/CLKIN — Oscillator input / External clock in |
| Pin 17 | RA0 — Port A bit 0 (digital I/O) |
| Pin 18 | RA1 — Port A bit 1 (digital I/O) |
| Pin 19 | NC — Not connected (not bonded on PIC16C558) |
| Pin 20 | NC — Not connected (not bonded on PIC16C558) |
Typische Anwendungen
PIC16LC558T-04I/SS ist geeignet für 7 Anwendungs: Consumer Appliance Control, Sensor Interface Module, LED Display Driver, Security Keypad Controller, Simple Motor Control, Industrial Controller Legacy Replacement, Battery-Powered Remote Control.
Consumer Appliance Control
The PIC16LC558T-04I/SS fits consumer appliance control applications because its 4 MHz 8-bit RISC core and 3.5KB OTP memory provide sufficient headroom for state-machine-based control of washing machines, microwave ovens, and small kitchen appliances. Its 13 GPIO pins can directly drive relay coils, triac interfaces, and 7-segment LED displays without external logic. The wide 2.5 V to 5.5 V supply range lets the same firmware work on 3.3 V or 5 V power rails, simplifying variant management across product tiers. Industrial -40 C to +85 C temperature rating supports garage, basement, and outdoor-adjacent installations.
Empfohlen
Sensor Interface Module
The PIC16LC558T-04I/SS works well in sensor interface modules that aggregate digital switches, Hall-effect sensors, and quadrature encoders. With 13 I/O pins, the MCU can scan a matrix keypad, read multiple limit switches, and stream status to a host via bit-banged serial protocols. Its 128 bytes of RAM hold state for debouncing and averaging while the 4 MHz core executes simple linearization routines. The POR and WDT peripherals add robustness against brown-outs and software lockups in unattended sensor installations.
Empfohlen
LED Display Driver
The PIC16LC558T-04I/SS serves as an LED display driver for scrolling message boards, channel signs, and seven-segment indicator panels. Its 13 I/O pins can be multiplexed to drive up to 64 LEDs in a charlieplexed matrix or 24 segments in a multiplexed 7-segment configuration. The 3.5KB OTP memory stores multiple font tables and animation sequences, while the 4 MHz instruction rate refreshes displays without visible flicker. Low-voltage operation at 2.5 V makes the part suitable for battery-powered signage.
Empfohlen
Security Keypad Controller
The PIC16LC558T-04I/SS is well suited for security keypad controllers and access-control panels where code complexity is low but reliability is critical. Its 13 I/O pins scan a 4x4 matrix keypad and drive a relay or opto-isolated output to unlock a door strike. The Watchdog Timer guards against lockup that could lock out a legitimate user, and the Power-On Reset ensures clean startup after power glitches. Industrial temperature rating lets the keypad operate in unheated vestibules or loading docks.
Empfohlen
Simple Motor Control
The PIC16LC558T-04I/SS handles basic motor-control tasks such as brushed DC motor speed regulation, stepper indexing, and small BLDC commutation via software. With 13 I/O pins it can drive H-bridge logic, monitor back-EMF through a comparator, and sequence phase commutation. The 4 MHz core provides sufficient MIPS for trapezoidal commutation on low-RPM fans and pumps. The LC low-voltage variant is ideal for 3.3 V battery-operated toys and portable tools.
Empfohlen
Industrial Controller Legacy Replacement
The PIC16LC558T-04I/SS supports legacy industrial controller replacement cycles where the original OTP firmware was qualified years ago and only needs exact-fit replacement. Its identical pinout, instruction set, and timing characteristics to the original PIC16C558 family allow drop-in substitution on existing 20-SSOP PCB footprints without firmware changes. The -40 C to +85 C industrial temperature rating matches factory floor conditions. Procurement teams use this part to bridge production until the design is migrated to a Flash-based PIC16F1xxx successor.
Empfohlen
Battery-Powered Remote Control
The PIC16LC558T-04I/SS fits battery-powered remote controls for ceiling fans, garage doors, and RF-controlled outlets. The LC variant operates down to 2.5 V, allowing the device to run from two alkaline cells for the full useful life of the battery. Low operating current at 4 MHz, combined with sleep modes and WDT wake-up, extends battery life to multi-year levels. Its 13 I/O pins accommodate a 3x4 button matrix plus an RF enable line and LED indicator.
Empfohlen
Zusammenfassung der empfohlenen Produkte
Technische Referenzdaten für PIC16LC558T-04I/SS – Vergleich, Designhinweise und Compliance-Informationen.
Auswahlhilfe
Vergleich mit Alternativen
| Parameter | Dieses Produkt | PIC16LC558T-04/SS | PIC16LC558-04I/SS | PIC16C558-04I/SS | PIC16F54-I/SS | PIC16F57-I/SS |
|---|---|---|---|---|---|---|
| Package | 20-SSOP | 20-SSOP - same | 20-SSOP - same | 20-SSOP - same | 20-SSOP - same | 20-SSOP - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory | 3.5 KB OTP | 3.5 KB OTP | 3.5 KB OTP | 3.5 KB OTP | 1 KB Flash | 3 KB Flash |
| Memory Type | OTP | OTP | OTP | OTP | Flash | Flash |
| Maximum Clock | 4 MHz | 4 MHz | 4 MHz | 4 MHz | 20 MHz | 20 MHz |
| Supply Voltage Range | 2.5 V to 5.5 V | 2.5 V to 5.5 V | 2.5 V to 5.5 V | 4.5 V to 5.5 V | 2.0 V to 5.5 V | 2.0 V to 5.5 V |
| Operating Temperature | -40 C to +85 C | 0 C to +70 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C |
| I/O Pins | 13 | 13 | 13 | 13 | 12 | 16 |
| Lifecycle Status | Obsolete | Obsolete | Obsolete | Obsolete | Active | Active |
Wichtigste Unterscheidungsmerkmale
- Industry-standard PIC16C5x core with mature toolchain (vs. PIC16F54-I/SS)
- Low-voltage 2.5 V to 5.5 V supply range supports 3.3 V designs (vs. PIC16C558-04I/SS)
- Compact 20-SSOP footprint with 13 GPIO pins (vs. PIC16F57-I/SS)
Designhinweise
The PIC16LC558T-04I/SS operates from 2.5 V to 5.5 V, making it compatible with both 3.3 V and 5 V rails. Decouple VDD (pin 14) with a 100 nF ceramic capacitor placed within 5 mm of the pin and a bulk 10 uF tantalum or aluminum polymer capacitor on the supply rail. The POR peripheral handles power-on reset, but brown-out behavior is not guaranteed below 2.5 V; for designs that may dip lower, add an external voltage supervisor such as MCP100 to the MCLR line for reliable reset.
OTP memory can be programmed only once; the part cannot be erased. Allocate a configuration word and verification pattern in firmware that allows in-circuit validation via ICSP before commit. The PIC16C558 baseline lacks an ADC, so any analog signal must be conditioned externally with a comparator or op-amp. RB6 and RB7 are shared with ICSP clock and data, so the application circuit must tolerate brief tristate behavior during programming or include a series resistor on lines that feed sensitive external loads.
Place the 4 MHz crystal or ceramic resonator as close as possible to OSC1 (pin 16) and OSC2 (pin 15), with the load capacitors grounded to a single VSS point to minimize jitter. Keep the MCLR pull-up (typically 10 kohm) within 10 mm of pin 4 and route the trace away from switching nodes to prevent false resets. The 20-SSOP package has a thermal pad option on some PIC16C5x parts but not on this baseline device; standard SSOP copper landing is adequate at the low operating currents of this MCU.
This part is in Obsolete lifecycle status as of 2026-09-22 per distributor databases. For new designs, evaluate the Flash-based PIC16F54-I/SS or PIC16F57-I/SS in the same 20-SSOP package, both of which offer active production status, higher clock speeds, and re-programmability. For existing production using the OTP variant, secure lifetime-buy inventory via Microchip's PCN process or qualify a second source from the alternatives list to mitigate supply risk.
Compliance-Informationen
RoHS, lead-free, and halogen-free status were not explicitly stated in the verified web data; refer to lot-specific Certificate of Conformance from Microchip for the date code of the part being procured. AEC-Q100 not applicable - this is an industrial-grade MCU.
