PIC16C54A-10/SO - 8-Bit 10MHz OTP MCU 12 I/O | Microchip
MPN: PIC16C54A-10/SO ✗ סוף ייצורPIC16C54A-10/SO סקירה
A microcontroller is a single-chip computer that integrates a CPU core, program memory, working RAM, and configurable peripheral I/O into one package. Within the broader taxonomy, the PIC16C54A belongs to the 8-bit MCU class, which sits below 16-bit and 32-bit microcontrollers in performance but above simple logic ICs in functional density. The PIC architecture is a RISC-style design with 12-bit-wide instructions and an 8-bit data path, giving approximately 2:1 code density over many competitor 8-bit cores of the same era.
Key differentiating features include 12-bit instruction word, 33 single-word instructions, two-level deep hardware stack, direct/indirect/relative addressing modes, an 8-bit real-time counter (TMR0), and a watchdog timer with on-chip RC oscillator. The 10 MHz rating delivers approximately 250 ns instruction cycle time, which is sufficient for simple state machines, keypad scanners, LED drivers, and appliance timers. Operating voltage spans 3.0 V to 5.5 V (commercial) with low-power CMOS construction.
Architecturally, the device is OTP-based rather than flash-based, meaning the program memory is written once at production time and cannot be electrically erased. This makes the part cost-optimized for high-volume fixed-code products but unsuitable for field re-programming. Microchip documentation notes a recommended migration path to the flash-based PIC16F54 for new designs requiring reprogrammability, while the OTP PIC16C54A remains supported for existing production lines.
Typical applications include appliance control boards, HVAC sub-system controllers, simple sensor interfaces, security keypads, low-end toy electronics, and replacement of discrete logic in cost-down redesigns. The wide SOIC footprint simplifies hand-soldering and rework for prototyping and low-volume builds.
When designing in this part, remember the OTP limitation precludes field firmware updates - plan code revision strategy and validation up-front, or specify the PIC16F54 family for new designs. Decoupling should follow standard 0.1 µF ceramic on VDD, with optional bulk capacitance near the device.
This page synthesizes distributor availability, drop-in alternatives from the same PIC16C5x family and PIC16F54 successor family, and practical design guidance not aggregated on any single manufacturer or distributor product page.
חלופות תחליף ישיר עבור PIC16C54A-10/SO — אותו מארז, תואם פין-לפין. חלקים במארז שונה הדורשים עיבוד מחדש של ה-PCB אינם נכללים.
וריאנטים בסדרה זו
דגמים מאותה סדרה התואמים Drop-in עם PIC16C54A-10/SO (אותו גורם צורה וטביעת רגל) — שונים ב Package, Program Memory Type, Core Architecture, Timers, Operating Temperature.
PIC16C54A-10I/SO
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←PIC16C54A-04/SO
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←PIC16F54-I/SO
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←PIC16C54A-04E/SS
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←PIC16C54A-04/P
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←PIC16C54A-10/SO דירוגים מרביים ומאפיינים חשמליים
| Core Architecture | 8-bit PIC RISC |
| Family | PIC16C5x |
| Instruction Word Width | 12-bit |
| Data Path Width | 8-bit |
| תדר שעון מקסימלי | 10 MHz |
| Program Memory Type | OTP (One-Time Programmable) |
| Program Memory Size | 768 B (512 x 12) |
| RAM Size | 25 B |
| Number of I/O Pins | 12 |
| Timers | 8-bit TMR0 + WDT |
| Hardware Stack Depth | 2 levels |
| Operating Voltage Range | 3.0 V to 5.5 V |
| טווח טמפרטורת פעולה | 0 °C to +70 °C (commercial) |
| מארז | 18-pin SOIC (SO) |
| סוג הרכבה | Surface Mount |
תצורת פינים של PIC16C54A-10/SO
| פין 1 | RA2 — Bidirectional I/O port A bit 2 |
| פין 2 | RA3 — Bidirectional I/O port A bit 3 |
| פין 3 | RA4/T0CKI — Bidirectional I/O port A bit 4 / Timer0 clock input |
| פין 4 | MCLR — Master Clear (reset) input, active low |
| פין 5 | VSS — Ground reference |
| פין 6 | RB0 — Bidirectional I/O port B bit 0 |
| פין 7 | RB1 — Bidirectional I/O port B bit 1 |
| פין 8 | RB2 — Bidirectional I/O port B bit 2 |
| פין 9 | RB3 — Bidirectional I/O port B bit 3 |
| פין 10 | RB4 — Bidirectional I/O port B bit 4 |
| פין 11 | RB5 — Bidirectional I/O port B bit 5 |
| פין 12 | RB6 — Bidirectional I/O port B bit 6 |
| פין 13 | RB7 — Bidirectional I/O port B bit 7 |
| פין 14 | VSS — Ground (secondary) |
| פין 15 | OSC1 — Oscillator input / external crystal pin 1 |
| פין 16 | OSC2 — Oscillator output / external crystal pin 2 |
| פין 17 | VDD — Positive supply voltage |
| פין 18 | RA1 — Bidirectional I/O port A bit 1 |
יישומים טיפוסיים
PIC16C54A-10/SO מתאים עבור 6 יישוםs: Appliance Control Boards, HVAC Sub-System Controllers, Simple Sensor Interfaces, Security Keypads and Access Control, Low-End Toy and Hobby Electronics, Discrete Logic Replacement / Cost-Down Redesigns.
Appliance Control Boards
PIC16C54A-10/SO's 10 MHz clock and 12-bit instruction set make it well-suited for washing machine, microwave, and dishwasher control boards requiring fixed firmware. The 768-byte OTP memory stores motor timing sequences and user-interface state machines, while 12 I/O pins drive relay drivers and LED indicators. OTP memory fits cost-optimized appliance lines where no firmware updates are needed post-production.
מומלץ
HVAC Sub-System Controllers
The PIC16C54A-10/SO fits HVAC subsystem controllers such as damper actuators, zone valves, and small fan speed controllers where deterministic OTP code controls timing loops. The 8-bit TMR0 generates PWM periods for motor speed control while WDT provides recovery from sensor fault conditions. Low-power CMOS design suits always-on thermostat peripheral boards drawing under 2 mA active.
מומלץ
Simple Sensor Interfaces
PIC16C54A-10/SO's 25-byte RAM and 12 I/O are appropriate for simple sensor interface modules reading thermistors, switches, or passive infrared detectors in security and industrial monitoring. The 10 MHz instruction cycle supports 250 ns response time for sensor polling loops, while OTP memory locks the calibration tables to prevent field tampering in commercial sensor networks.
מומלץ
Security Keypads and Access Control
The PIC16C54A-10/SO drives 3x4 or 4x4 matrix keypads with its 12 I/O pins and runs code-comparison routines against stored OTP passcodes for electronic locks and alarm keypads. Hardware stack depth of 2 levels is adequate for flat keypad scanning routines without subroutine nesting, and the OTP memory prevents code extraction attacks in security applications where code confidentiality matters.
מומלץ
Low-End Toy and Hobby Electronics
PIC16C54A-10/SO suits battery-powered toy and hobby electronics where its 3.0-5.5 V supply range and 12 I/O drive LED arrays, sound IC triggers, and simple motor H-bridges. The wide SOIC package simplifies hand-soldering in maker and educational kits, while OTP memory locks the toy behavior to prevent end-user modification. Cost under $2 in qty 100 supports high-volume consumer production.
מומלץ
Discrete Logic Replacement / Cost-Down Redesigns
PIC16C54A-10/SO replaces discrete 74HC logic gates in cost-down redesigns of legacy products, consolidating multi-chip state machines into a single MCU. Its 250 ns instruction cycle matches typical 74HC logic propagation delays, simplifying timing migration from discrete logic. The 12-bit instruction word provides approximately 2:1 code compression over CISC 8-bit cores, reducing memory cost per feature.
מומלץ
סיכום מוצרים מומלצים
נתוני עזר הנדסיים עבור PIC16C54A-10/SO — השוואה, הנחיות תכנון ומידע על תאימות.
מדריך בחירה
השוואה עם חלופות
| פרמטר | מוצר זה | PIC16C54A-10I/SO | PIC16C54A-04/SO | PIC16F54-I/SO | PIC16C54A-04E/SS | PIC16C54A-04/P |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 18-pin SOIC | 18-pin SOIC | 18-pin SOIC | 18-pin SOIC | 20-pin SSOP | 18-pin PDIP |
| Max Clock Frequency | 10 MHz | 10 MHz | 4 MHz | 20 MHz | 4 MHz | 4 MHz |
| Program Memory | 768 B OTP | 768 B OTP | 768 B OTP | 768 B Flash | 768 B OTP | 768 B OTP |
| RAM Size | 25 B | 25 B | 25 B | 25 B | 25 B | 25 B |
| I/O Pins | 12 | 12 | 12 | 12 | 12 | 12 |
| Operating Temperature | 0 C to +70 C | -40 C to +85 C | 0 C to +70 C | -40 C to +85 C | -40 C to +125 C | 0 C to +70 C |
| Memory Type | OTP | OTP | OTP | Flash (reprogrammable) | OTP | OTP |
| Lifecycle Status | NRND | NRND | NRND | Active | NRND | NRND |
מבדילים עיקריים
- Flash-based reprogrammability vs OTP memory (לעומתPIC16F54-I/SO)
- Higher clock speed vs slower same-family parts (לעומתPIC16C54A-04/SO)
- Industrial temperature range support (לעומתPIC16C54A-10I/SO)
הערות תכנון
PIC16C54A-10/SO uses One-Time-Programmable memory that cannot be electrically erased or rewritten. Engineers designing new products should plan code validation thoroughly before programming, or specify the flash-based PIC16F54 family for designs requiring in-system firmware updates. The 2-level hardware stack limits subroutine nesting depth to 2 - deeply recursive algorithms must be rewritten iteratively to fit this constraint.
Place a 0.1 µF ceramic decoupling capacitor as close as possible to the VDD pin (pin 17), plus a bulk 1-10 µF tantalum or ceramic capacitor on the same supply trace within 1 inch of the device. The PIC16C5x family has relatively high transient current during oscillator startup; insufficient decoupling can cause POR (power-on reset) failure on noisy supplies. Add a 10 kΩ pull-up on MCLR (pin 4) to prevent spurious resets.
Route the OSC1/OSC2 traces (pins 15-16) short and symmetric to minimize parasitic capacitance, with a ground guard ring around the crystal if high-noise digital traces are nearby. The 18-SOIC package leaves pads 14 and 18 close to the supply pins, so route VDD/VSS traces on a separate layer with via stitching every 200 mils for clean reference. Keep I/O traces away from the oscillator traces to avoid coupling.
Estimated: at 10 MHz clock, 5 V supply, and all I/O switching, the PIC16C54A-10/SO draws approximately 2-3 mA active, dissipating 10-15 mW - well below the SOIC thermal limit. No heatsink is required. For industrial temperature variants (-10I), verify junction temperature remains below +85 °C by measuring ambient and using the datasheet thermal resistance value of approximately 100 °C/W for the SOIC package.
מידע על תאימות
RoHS/REACH compliance status not explicitly confirmed in the provided web data - request latest compliance documentation from Microchip for EU-bound shipments. Not AEC-Q100 qualified; not designed for automotive safety-critical applications.