PIC16C54CT-20/SO - 8-bit OTP MCU 20MHz 12 I/O SOIC-18 | Microchip
Teilenummer: PIC16C54CT-20/SO ✓ Aktiv| Menge | Stückpreis | Gesamt |
|---|---|---|
| 1 | $1.91 | $1,91 |
| 10 | $1.72 | $17,20 |
| 100 | $1.53 | $153,00 |
| 500 | $1.34 | $670,00 |
| 1.000 | $1.2 | $1.200,00 |
PIC16C54CT-20/SO Übersicht
An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, non-volatile program memory, volatile data RAM, and programmable I/O peripherals. The PIC16C5x family belongs to the OTP-programmable baseline of Microchip's PIC architecture, sitting hierarchically under 16-bit MCUs (PIC24/dsPIC) and 32-bit MCUs (PIC32) within the broader microcontroller -> embedded controller -> semiconductor taxonomy. These parts are favored for low-cost, fixed-function embedded logic where firmware is finalized before production and reprogramming is not required in the field.
Key features of the PIC16C54C include a 12-bit instruction set providing 2:1 code compression over typical 8-bit CISC competitors, a 33 single-word instruction set that simplifies development, a wide 3.0 V to 5.5 V operating range, an 8-bit timer/counter, a watchdog timer for system reset, and an internal RC oscillator option that eliminates the need for external clock components in cost-sensitive designs. The 20 MHz CPU delivers 100 ns instruction cycle time at 5 V operation.
Technically, the PIC16C5x architecture uses a Harvard design with separate program and data buses, allowing simultaneous instruction fetch and operand access. The device draws typically 1.8 mA at 5 V / 4 MHz and supports Power-down Sleep mode for battery-sensitive applications. The 25-byte RAM register file provides rapid context-switch/save-restore, while the OTP program memory is programmed via Microchip's standard serial ICSP interface.
Typical applications span low-cost consumer appliances, automatic lighting controllers, security-system sensor interfaces, battery chargers, small motor control loops, and replacement of discrete logic in toy and hobby electronics. The 12 I/O pins are sufficient for keypad scanning, LED multiplexing, and simple UART bit-banging firmware implementations.
When designing with this part, remember that OTP memory cannot be re-programmed in-circuit. For prototype or in-field reprogramming, consider the Flash-based PIC16F54A alternative. Always include decoupling capacitors within 5 mm of VDD, and respect the commercial temperature grade limits when designing for industrial environments.
Drop-in-Alternativen für PIC16C54CT-20/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 PIC16C54CT-20/SO (gleiche Bauform und Footprint) – abweichend in Package, Operating Temperature, Program Memory Size, Watchdog Timer, Program Memory Type.
Schnellvergleichstool – Wählen Sie Alternativbauteile für den Direktvergleich:
PIC16C54C-20/SO
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
PIC16C54C-20I/SO
✅ Drop-In✓ Auf Lager
$1.15 / Stück
Datenblatt ansehen →PIC16C54AT-20/SO
✅ Drop-In✓ Auf Lager
$2.15 / Stück
Datenblatt ansehen →PIC16C54C-04/SO
✅ Drop-In✓ Auf Lager
$1.38 / Stück
Datenblatt ansehen →PIC16C54-10/SO
✅ Drop-In✓ Auf Lager
$1.02 / Stück
Datenblatt ansehen →PIC16F54A-I/SO
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
PIC16C54CT-20/SO Grenzwerte & elektrische Eigenschaften
| Core | PIC 8-bit RISC |
| Family | PIC16C5x (PIC16C54C sub-family) |
| Program Memory Type | OTP (One-Time Programmable) |
| Program Memory Size | 768B (512 x 12 bits) |
| RAM Size | 25 bytes |
| CPU Speed (Max) | 20 MHz |
| Instruction Cycle Time | 100 ns at 20 MHz |
| I/O Pins | 12 |
| Timers | 1 x 8-bit |
| Watchdog Timer | Yes |
| Operating Voltage (VDD) | 3.0 V to 5.5 V |
| Betriebstemperatur | 0C to +70C (Commercial) |
| Gehäuse | 18-SOIC (0.295" / 7.50 mm width) |
| Montageart | Surface Mount |
| MSL-Level | 1 (unlimited) |
PIC16C54CT-20/SO Pin-Konfiguration
| Pin 1 | RA2 — I/O port A bit 2 |
| Pin 2 | RA3 — I/O port A bit 3 |
| Pin 3 | T0CKI — Timer0 clock input |
| Pin 4 | MCLR/VPP — Master Clear (reset) / programming voltage |
| 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 (3.0 V to 5.5 V) |
| Pin 15 | OSC2 — Crystal/oscillator output |
| Pin 16 | OSC1 — Crystal/oscillator input |
| Pin 17 | RA0 — I/O port A bit 0 |
| Pin 18 | RA1 — I/O port A bit 1 |
Typische Anwendungen
PIC16C54CT-20/SO ist geeignet für 6 Anwendungs: Low-Cost Consumer Appliance Controllers, Automatic Lighting and Fan Control, Security System Sensor Hubs, Battery Chargers and Power Management, Toy and Hobby Electronics, Replacement of Discrete 74-series Logic.
Low-Cost Consumer Appliance Controllers
The PIC16C54CT-20/SO's 20 MHz CPU and 12 I/O pins fit small appliance control boards such as coffee makers, toasters, and hair dryers where a fixed-function program drives relay sequencing, button debounce, and LED status indication. The 768B OTP memory holds appliance state machines; 25-byte RAM is sufficient for the handful of variables a kitchen appliance needs. The 3.0-5.5 V operating range matches standard rectified mains supplies with linear regulation, and the wide-body SOIC package provides robust thermal performance for the 70 mA continuous output current typical in relay-driver circuits.
Empfohlen
Automatic Lighting and Fan Control
For PIR-sensor-activated lighting and ceiling fan speed controllers, the PIC16C54CT-20/SO's 20 MHz instruction rate provides timing resolution for triac zero-crossing detection while the 8-bit timer drives soft-start PWM modulation. The 12 I/O pins accommodate PIR input, ambient light sensor ADC via bit-banging, three triac gate drivers, and three LED indicators. The 1.8 mA active current and Sleep mode dropping to microamperes allow battery-backed emergency lighting applications.
Empfohlen
Security System Sensor Hubs
PIR motion detectors, glass-break sensors, and door/window contact interfaces use the PIC16C54CT-20/SO to debounce inputs, drive piezo buzzers, and multiplex LED zone indicators. The 20 MHz rate gives a 100 ns instruction cycle for fast sensor polling; the watchdog timer resets the MCU on firmware lockup. The 12 I/O pins cover up to four sensor zones plus status LEDs. OTP memory prevents reverse-engineering of the alarm logic, a security advantage versus Flash-based competitors.
Empfohlen
Battery Chargers and Power Management
Single-cell NiMH and Li-ion charger circuits use the PIC16C54CT-20/SO to implement CC/CV charge profiles via PWM on a switching FET, monitor battery voltage through a comparator-based ADC, and terminate charging on -dV detection. The 3.0-5.5 V operating range handles 2S Li-ion packs directly. The 25-byte RAM holds charge counter and phase state; OTP memory locks the calibration constants against field tampering. The 20 MHz speed enables real-time current-loop regulation.
Empfohlen
Toy and Hobby Electronics
The PIC16C54CT-20/SO's sub-$2 price point and 20 MHz performance make it ideal for motorized toys, RC receivers, electronic dice, and educational microcontroller kits. The 12 I/O pins drive RC servos, motor H-bridges, and LED matrices. The Harvard RISC architecture's single-cycle instructions keep firmware deterministic for real-time servo control. OTP memory prevents over-the-counter firmware duplication, protecting manufacturer IP in the toy market.
Empfohlen
Replacement of Discrete 74-series Logic
Designers migrate from 74HC00, 74HC138, 74HC595 chains to a single PIC16C54CT-20/SO that replaces 5-15 logic packages with one $1.91 MCU. The 12 I/O pins drive shift-register chains, debounce mechanical switches, and sequence multiplexed displays. OTP programming locks the logic equation, lowering PCB area by 60% versus discrete glue logic. The 20 MHz CPU executes the equivalent of 200 logic-gate delays per millisecond, suitable for most control-panel glue logic tasks.
Empfohlen
Zusammenfassung der empfohlenen Produkte
Technische Referenzdaten für PIC16C54CT-20/SO – Vergleich, Designhinweise und Compliance-Informationen.
Auswahlhilfe
Vergleich mit Alternativen
| Parameter | Dieses Produkt | PIC16C54C-20/SO | PIC16C54C-20I/SO | PIC16C54AT-20/SO | PIC16C54C-04/SO | PIC16F54A-I/SO |
|---|---|---|---|---|---|---|
| Package | 18-SOIC | 18-SOIC | 18-SOIC | 18-SOIC | 18-SOIC | 18-SOIC |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | |
| CPU Speed (Max) | 20 MHz | 20 MHz | 20 MHz | 4 MHz | 10 MHz | 20 MHz |
| Program Memory | 768B OTP | 768B OTP | 768B OTP | 512B OTP | 1 KB Flash | |
| RAM Size | 25 bytes | 25 bytes | 25 bytes | 25 bytes | 25 bytes | |
| I/O Pins | 12 | 12 | 12 | 12 | ||
| Temperature Grade | Commercial (0C to +70C) | Industrial (-40C to +85C) | Commercial (0C to +70C) | Industrial (-40C to +85C) | ||
| Memory Type | OTP | OTP | Flash | |||
| Packaging Format | Tape & Reel | Tube | Tape & Reel | Tube / T&R |
Wichtigste Unterscheidungsmerkmale
- Tape-and-reel packaging for OEM SMT lines (vs. PIC16C54C-20/SO)
- 20 MHz CPU speed at commercial temperature grade (vs. PIC16C54C-04/SO)
- OTP memory locks firmware against field tampering (vs. PIC16F54A-I/SO)
Designhinweise
Estimated: at VDD=5.0 V and 20 MHz CPU active, supply current is typically 1.8 mA per the PIC16C5x datasheet. Sleep mode current drops to <1 uA typical. Place a 100 nF ceramic decoupling capacitor within 5 mm of the VDD pin (pin 14), and add a bulk 10 uF electrolytic at the board-level VDD rail. Wide-body SOIC package provides sufficient thermal margin for continuous 5 V operation.
Keep the 18-SOIC trace lengths to OSC1/OSC2 (pins 15-16) under 10 mm to avoid oscillator noise coupling; route VDD and VSS as a star ground with the MCU at the center. Place the MCLR/VPP pull-up resistor (typically 10 kohm) close to pin 4. Add a 100 nF capacitor from MCLR to VSS if the pin is used as a digital input to filter noise spikes that would cause spurious resets.
OTP memory cannot be re-programmed - verify your firmware in a Flash-based PIC16F54A-I/SO prototype first, then commit to the OTP PIC16C54CT-20/SO for production. The 18-SOIC wide-body package has 1.27 mm pitch, not the 1.27 mm of SO-14; confirm your PCB land pattern matches the 0.295 inch (7.50 mm) wide body, not narrow-body SOIC. The T0CKI pin (pin 3) defaults to RTCC function and may need disabling in the OPTION register.
Compliance-Informationen
RoHS and REACH status not explicitly stated in provided data - marked [DATA_NEEDED]. Lead-free confirmed by Microchip PIC16C5x family packaging notes. AEC-Q100 not applicable for commercial temperature grade.
