PIC16C554-20I/SO - 8-Bit 20MHz OTP MCU 18-SOIC | Microchip
Teilenummer: PIC16C554-20I/SO ✓ Aktiv| Menge | Stückpreis | Gesamt |
|---|---|---|
| 1 | $2.34 | $2,34 |
| 10 | $2.1 | $21,00 |
| 100 | $1.92 | $192,00 |
| 500 | $1.74 | $870,00 |
| 1.000 | $1.55 | $1.550,00 |
PIC16C554-20I/SO Übersicht
An 8-bit microcontroller (MCU) is a small, self-contained computer-on-a-chip that combines a CPU, RAM, non-volatile program memory, and I/O peripherals in a single package. Within the broader IC taxonomy, an 8-bit MCU sits below 32-bit MCUs and microprocessors, but remains dominant in cost-sensitive, deterministic, low-power embedded applications where bit-manipulation efficiency and predictable interrupt latency matter more than raw throughput. The PIC16C5x family was Microchip's first-generation baseline architecture, evolving into the modern PIC16F and PIC18 families still in volume production today.
Key features include 13 digital I/O pins, a 12-bit timer/counter (TMR0) with optional external gate, power-on reset (POR), a watchdog timer (WDT) with its own on-chip RC oscillator, and an 8-bit prescaler shared between the timer and watchdog. The OTP program memory enables one-time field programmability, which historically targeted high-volume production runs where mask-ROM economics outweighed flash reprogrammability. The 35 single-word instruction set reduces learning curves for new firmware developers.
Typical applications span automotive body controllers, industrial sensor interfaces, simple appliance controls, security alarm panels, low-end consumer electronics, IR remote control transmitters, and battery-powered metering. Designers continue to specify the PIC16C554 in legacy designs because of its long product life, mature toolchain (MPLAB, MPASM, C compilers), and pin-compatible Flash replacements like PIC16F54 and PIC16F57.
When migrating firmware, note that the PIC16C554's 12-bit instruction width and 33-instruction opcode are NOT binary-compatible with later PIC16F1xxx or PIC18 instruction sets; assembly source requires rewriting. For new designs, prefer the flash-based PIC16F54 / PIC16F57 family unless OTP cost advantage is decisive.
Drop-in-Alternativen für PIC16C554-20I/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 PIC16C554-20I/SO (gleiche Bauform und Footprint) – abweichend in Package, Program Memory Size, Program Memory Type, Timers, Core Architecture.
Schnellvergleichstool – Wählen Sie Alternativbauteile für den Direktvergleich:
PIC16F54-I/SO
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
PIC16C554T-20I/SO
✅ Drop-In✓ Auf Lager
$1.82 / Stück
Datenblatt ansehen →PIC16C554-20E/SO
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
PIC16C554-04I/SO
✅ Drop-In✓ Auf Lager
$1.68 / Stück
Datenblatt ansehen →PIC16C54C-04I/SO
✅ Drop-In✓ Auf Lager
$2.18 / Stück
Datenblatt ansehen →PIC16C54A-04I/SO
✅ Drop-In✓ Auf Lager
$2.55 / Stück
Datenblatt ansehen →PIC16C558-20I/SO
✅ Drop-In✓ Auf Lager
$1.2 / Stück
Datenblatt ansehen →PIC16C554-20I/SO Grenzwerte & elektrische Eigenschaften
| Core Architecture | PIC16C 8-bit RISC |
| Instruction Set Width | 12-bit |
| Instruction Count | 35 single-word instructions |
| Maximale Taktfrequenz | 20 MHz |
| Instruction Execution Time | 200 ns |
| Program Memory Type | OTP (One-Time Programmable) |
| Program Memory Size | 896 bytes (512 x 14) |
| Data RAM | 80 bytes |
| Data EEPROM | Not present |
| I/O Pins | 13 |
| Timers | 1 x 8-bit TMR0 |
| Watchdog Timer | Yes, with dedicated RC oscillator |
| Operating Voltage | 3.0 V to 5.5 V |
| Betriebstemperatur | -40 C to +85 C (Industrial) |
| Gehäuse | 18-pin SOIC (SO), 7.50 mm body width |
| Montageart | Surface Mount (Gull Wing) |
| RoHS-Status | Compliant |
PIC16C554-20I/SO Pin-Konfiguration
| Pin 1 | RA2 — Bidirectional I/O pin / digital input |
| Pin 2 | RA3 — Bidirectional I/O pin / digital input |
| Pin 3 | T0CKI/RA4 — Bidirectional I/O pin / Timer0 clock input |
| Pin 4 | /MCLR — Master Clear (reset) input, active low |
| Pin 5 | VSS — Ground reference |
| Pin 6 | OSC1/CLKIN — Oscillator crystal input / external clock input |
| Pin 7 | OSC2/CLKOUT — Oscillator crystal output / clock output (Fosc/4) |
| Pin 8 | RC0 — Bidirectional I/O pin |
| Pin 9 | RC1 — Bidirectional I/O pin |
| Pin 10 | RC2 — Bidirectional I/O pin |
| Pin 11 | RC3 — Bidirectional I/O pin |
| Pin 12 | RC4 — Bidirectional I/O pin |
| Pin 13 | RC5 — Bidirectional I/O pin |
| Pin 14 | RC6 — Bidirectional I/O pin |
| Pin 15 | RC7 — Bidirectional I/O pin |
| Pin 16 | VDD — Positive supply voltage (3.0 V to 5.5 V) |
| Pin 17 | RB0/INT — Bidirectional I/O pin / external interrupt input |
| Pin 18 | RB1 — Bidirectional I/O pin |
Typische Anwendungen
PIC16C554-20I/SO ist geeignet für 6 Anwendungs: Automotive Body Controllers, Industrial Sensor Interfaces, Appliance Control Boards, Security Alarm Panels, IR Remote Control Transmitters, Battery-Powered Metering.
Automotive Body Controllers
The PIC16C554-20I/SO fits automotive body controller networks because of its industrial temperature rating (-40 C to +85 C), 20 MHz deterministic 200 ns instruction cycle, and 13 general-purpose I/O that can drive relays and read switches directly. Its 12-bit instruction set with 35 single-word opcodes yields compact, predictable code for door-lock, mirror-control, and wiper-control ECUs. The 896-byte OTP holds typical 600-800 line assembly modules, and the on-chip watchdog timer with dedicated RC oscillator protects against software lock-up in noisy automotive environments. Compared to a flash MCU, the OTP one-time-program nature suits high-volume body controllers where firmware revision is locked after PPAP, and the 18-SOIC footprint allows surface-mount assembly compatible with existing wave-solder production lines.
Empfohlen
Industrial Sensor Interfaces
The PIC16C554-20I/SO is well suited to industrial sensor interface modules such as proximity sensors, photoelectric switches, and simple 4-20 mA loop conditioners because its 20 MHz clock handles 50 kHz signal processing tasks while the 12-bit PIC16C5x instruction set produces tight, deterministic interrupt response for time-critical sensor sampling. The 13 I/O pins support multiple sensor channels plus status LEDs, and the TMR0 8-bit timer with prescaler simplifies period measurement. The industrial -40 C to +85 C operating range covers factory-floor ambient, and the 18-SOIC package allows compact IP67 sensor housings. Compared to a 32-bit Cortex-M0 alternative, the PIC16C554 is dramatically cheaper and lower-power, and its OTP memory fits the locked-firmware production model typical of sensor end products.
Empfohlen
Appliance Control Boards
The PIC16C554-20I/SO is widely used in white-goods and small appliance control boards - washing machines, microwave ovens, dishwashers, and air-conditioner remotes - because of its low unit cost, 5 V operation from rectified mains, and proven reliability in long-life consumer products. Its 35-instruction RISC core produces 600-1000 line assembly programs that easily fit within the 896-byte OTP budget. The 8-bit TMR0 with watchdog supports both motor-control PWM generation and software lock-up recovery, while the 13 I/O handle keypad scanning, triac drive, LED indication, and buzzer tones. Compared to newer flash MCUs, the PIC16C554's OTP structure is more cost-effective at >50K annual volume where the mask-style programming amortizes across the product lifecycle.
Empfohlen
Security Alarm Panels
The PIC16C554-20I/SO serves as the main controller in PIR motion-detector alarm panels and wired security keypads because of its fast interrupt response, low power consumption, and 13 I/O that accommodate PIR sensor input, tamper switch, reed relay output, and 7-segment status LEDs. The on-chip watchdog timer with dedicated RC oscillator catches firmware lock-up that would otherwise disable a security system. The 20 MHz clock supports periodic loop times below 5 ms, ensuring alarm-zone sampling meets UL 1023 timing requirements. OTP memory prevents firmware reverse-engineering by competitors, a security advantage over flash-based parts in commercial alarm deployments. Compared to a 32-bit MCU, the PIC16C554 costs less than $2 at 1000 pieces and runs from a single 5 V rail.
Empfohlen
IR Remote Control Transmitters
The PIC16C554-20I/SO is ideal for IR remote control transmitters (TV, set-top box, audio receiver, projector) because of its 20 MHz clock that generates accurate 38 kHz / 56 kHz carrier frequencies for NEC, RC5, and SIRC protocols, and its 13 I/O accommodate a 4x4 key matrix plus status LED. The 12-bit instruction set with 35 single-word opcodes enables compact 200-400 line IR-protocol firmware within the 896-byte OTP budget. Low power consumption (under 2 mA active, <1 uA sleep with WDT enabled) supports 2x AAA battery operation. Compared to a 32-bit MCU, the PIC16C554 dramatically extends battery life and reduces BOM cost below $1.50 in volume, making it the workhorse of consumer IR remotes for >25 years.
Empfohlen
Battery-Powered Metering
The PIC16C554-20I/SO is used in battery-powered metering devices (water meters, gas meters, simple electricity meters) because of its low 2 mA active current, sub-1 uA sleep current with watchdog enabled, and 13 I/O for pulse-input sensors, LCD drive, and tamper detection. The 8-bit TMR0 accurately counts low-frequency pulse trains from reed switches or Hall sensors. The industrial -40 C to +85 C range covers outdoor meter housings, and the OTP memory prevents consumer-side firmware tampering - a regulatory concern in utility metering. Compared to a Cortex-M0 with 32 kHz RTC, the PIC16C554 achieves 5+ year battery life on 2x AA cells in typical metering duty cycles while costing less than $2 per unit at volume.
Empfohlen
Zusammenfassung der empfohlenen Produkte
Technische Referenzdaten für PIC16C554-20I/SO – Vergleich, Designhinweise und Compliance-Informationen.
Auswahlhilfe
Vergleich mit Alternativen
| Parameter | Dieses Produkt | PIC16F54-I/SO | PIC16C554T-20I/SO | PIC16C554-20E/SO | PIC16C554-04I/SO | PIC16C558-20I/SO |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 18-SOIC (SO) | 18-SOIC (SO) - same | 18-SOIC (SO) - same | 18-SOIC (SO) - same | 18-SOIC (SO) - same | 18-SOIC (SO) - same |
| Program Memory Type | OTP | Flash (reprogrammable) | OTP (same) | OTP (same) | OTP (same) | OTP (same) |
| Program Memory Size | 896 bytes (512 x 14) | 896 bytes (same) | 896 bytes (same) | 896 bytes (same) | 896 bytes (same) | 2048 bytes (1024 x 14) |
| Maximum Clock Frequency | 20 MHz | 20 MHz (same) | 20 MHz (same) | 20 MHz (same) | 4 MHz (-80%) | 20 MHz (same) |
| Operating Temperature | -40 C to +85 C (Industrial) | -40 C to +85 C (same) | -40 C to +85 C (same) | -40 C to +125 C (Extended) | -40 C to +85 C (same) | -40 C to +85 C (same) |
| I/O Pins | 13 | 13 (same) | 13 (same) | 13 (same) | 13 (same) | 13 (same) |
| Data RAM | 80 bytes | 80 bytes (same) | 80 bytes (same) | 80 bytes (same) | 80 bytes (same) | 128 bytes (+60%) |
| Watchdog Timer | Yes (dedicated RC) | Yes (same) | Yes (same) | Yes (same) | Yes (same) | Yes (same) |
Wichtigste Unterscheidungsmerkmale
- Flash-based reprogrammability vs. one-time-program (vs. PIC16F54-I/SO)
- Industrial temperature grade availability (vs. PIC16C554-20I/SO vs. PIC16C554-20I/P)
- Higher 20 MHz clock grade for time-critical code (vs. PIC16C554-04I/SO)
Designhinweise
The PIC16C554-20I/SO operates from a single 3.0 V to 5.5 V supply on VDD (pin 16). Place a 0.1 uF ceramic decoupling capacitor as close as physically possible to the VDD pin, with a 10 uF electrolytic or tantalum bulk capacitor on the same rail. The /MCLR reset pin should be tied to VDD through a 10 kohm pull-up resistor to ensure clean power-on reset behavior; adding a 0.1 uF capacitor on /MCLR improves noise immunity in electrically noisy environments such as automotive and industrial installations.
PIC16C554 OTP memory is one-time programmable - every code revision requires a new part. For new designs with revision cycles, choose PIC16F54-I/SO instead; for legacy lock-firmware production where revision is not expected, PIC16C554 remains a cost-effective option. Engineers migrating code from PIC16C54 or PIC16C56 to PIC16C554 must verify I/O mapping: PIC16C554 has 13 I/O (RA0-RA4, RB0-RB7, RC0-RC7) but pin assignments differ from older family members. Source code must be recompiled - PIC16C554 is NOT binary-compatible with PIC16F1xxx or PIC18 instruction sets.
Estimated: at 20 MHz active current and 5 V supply, the PIC16C554-20I/SO dissipates approximately 50 mW (10 mA typical active). The 18-SOIC package has a theta_JA of approximately 85 C/W (estimated based on SOIC family data). At industrial upper limit 85 C ambient, junction temperature rises only 4.25 C - well within the 150 C max junction. No heatsink required for any commercial or industrial application. Ensure PCB copper pour area around the SOIC pads meets minimum 50 sq mm thermal relief guidelines.
Compliance-Informationen
RoHS compliant per Microchip product page. Not AEC-Q100 qualified; for automotive applications requiring AEC-Q100, consider PIC16F54-I/SO automotive grade. Industrial temperature grade (-40 C to +85 C) per 'I' suffix.