PIC16C54C-20I/SO - 8-bit 20MHz OTP MCU 12 I/O | Microchip
MPN: PIC16C54C-20I/SO ✓ Hoạt độngPIC16C54C-20I/SO Tóm tắt
An 8-bit microcontroller (MCU) is a single-chip computer integrating a CPU, RAM, ROM/Flash program memory, and peripherals. It executes instructions fetched from internal program memory, processes data in working registers, and drives I/O pins. The PIC16C5X family is part of the broader microcontroller hierarchy (8-bit MCU -> microcontroller -> embedded processor -> semiconductor IC). OTP program memory means the device is programmed once and cannot be electrically erased, reducing cost for high-volume fixed-code products.
Key specifications include 33 single-word/single-cycle RISC instructions (most execute in 200ns at 20MHz), a two-level hardware stack, direct/indirect/relative addressing modes, an 8-bit timer/counter (TMR0), and a 4.5V to 5.5V supply range. Power management includes a SLEEP mode to minimize quiescent current in battery-friendly designs. The PIC16C5X architecture is fully static, allowing the clock to be stopped without losing register state.
The PIC16C54C employs a Harvard-class bus organization with a 12-bit-wide instruction path and an 8-bit data path. Seven or eight special-function hardware registers implement the programming model. Watchdog timer with on-chip RC oscillator provides autonomous brown-out recovery, improving field reliability in unattended industrial installations.
Typical applications include consumer appliance controllers, LED lighting drivers, simple sensor signal conditioning, battery chargers, and small white-goods motor control. The wide temperature range (-40C to +85C industrial) and 20MHz throughput suit industrial 2D automation sub-systems.
When designing, ensure your programmer supports the OTP EPROM algorithm of PIC16C5X and reserve pinout compatibility with the PIC16C55C, PIC16C56C, PIC16C57C, and PIC16C58C for code-scaling flexibility.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes for the PIC16C54C-20I/SO not found in the manufacturer datasheet alone.
Bộ thay thế dễ dàng lắp đặt cho PIC16C54C-20I/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 PIC16C54C-20I/SO (cùng hình factor và footprint) — khác nhau ở Program Memory Size, Package, Program Memory Type, Watchdog Timer, Timers.
PIC16C54C-20E/SO
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C54C-04I/SO
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16F54-I/SO
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C54A-20I/SO
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C54C-20I/SO Tỷ lệ tối đa & tính chất điện
| Core | 8-bit PIC16C5X |
| Program Memory Size | 768 B (512 x 12) OTP |
| RAM | 25 B |
| CPU Speed | 20 MHz |
| I/O Pins | 12 |
| Điện áp cung cấp | 4.5 V to 5.5 V |
| Instruction Set | 33 single-word/single-cycle RISC instructions |
| Hộp | 18-SOIC (0.295 inch, 7.50 mm width) |
| Kiểu lắp đặt | Surface Mount |
| Nhiệt độ hoạt động | -40 C to +85 C (Industrial) |
| Timer | 8-bit TMR0 with 8-bit prescaler |
| Stack | Two-level hardware stack |
| Watchdog Timer | Yes, with on-chip RC oscillator |
| Program Memory Type | OTP EPROM |
| Data EEPROM | None |
| Architecture | Harvard (12-bit instruction / 8-bit data) |
| Trạng thái RoHS | Compliant |
Cấu hình chân PIC16C54C-20I/SO
| Chân 1 | RA2 — Bidirectional I/O port A bit 2 |
| Chân 2 | RA3 — Bidirectional I/O port A bit 3 |
| Chân 3 | RA4/T0CKI — Bidirectional I/O port A bit 4 / Timer0 clock input |
| Chân 4 | MCLR — Master Clear reset input (active low) |
| Chân 5 | VSS — Ground reference |
| Chân 6 | RB0/INT — 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 | VDD — Positive supply voltage (4.5V to 5.5V) |
| Chân 15 | OSC2/CLKOUT — Oscillator output / clock output (Fosc/4) |
| Chân 16 | OSC1/CLKIN — Oscillator input / external clock input |
| Chân 17 | RA0 — Bidirectional I/O port A bit 0 |
| Chân 18 | RA1 — Bidirectional I/O port A bit 1 |
Ứng dụng tiêu biểu
PIC16C54C-20I/SO phù hợp cho 6 Áp dụngs: Consumer Appliance Control, LED Lighting Drivers, Battery Chargers and Power Management, Small Motor Control, Sensor Signal Conditioning, Simple White-Goods Control.
Consumer Appliance Control
The PIC16C54C-20I/SO is well-suited for low-cost consumer appliance controllers including coffee makers, toasters, rice cookers, and small kitchen gadgets. Its 20MHz CPU throughput executes 33 single-cycle RISC instructions in 200ns, easily handling keypad scanning, LED indicator multiplexing, and relay/solenoid actuation loops. The 12 I/O pins drive 7-segment displays directly or matrix-scan a 3x4 keypad with zero external logic. OTP memory locks the final firmware against reverse engineering, important for high-volume consumer products where BOM cost dominates. Industrial -40C to +85C rating tolerates kitchen and laundry ambient conditions. With sleep current consumption of <1 µA typical, battery-backed clock and timer functions extend product shelf life.
Được đề xuất
LED Lighting Drivers
The PIC16C54C-20I/SO drives RGB LED controllers, decorative light strings, and architectural lighting fixtures where fixed color sequences replace expensive DMX hardware. Its 25 bytes of RAM and 768-byte OTP memory hold 16-bit PWM tables for up to 4 LED channels with smooth color blending. The 12 I/O pins drive constant-current LED drivers like the CL220 or BC847-based discrete sinks. The 200ns instruction cycle allows software PWM at 8-bit resolution above 1 kHz, eliminating flicker in camera-visible applications. OTP firmware prevents field tampering with lighting shows. Industrial temperature range suits outdoor installations when paired with conformal coating.
Được đề xuất
Battery Chargers and Power Management
The PIC16C54C-20I/SO implements CC/CV charge profile controllers for sealed lead-acid, NiMH, and small Li-ion packs in power tools and toys. Its on-chip watchdog timer with on-chip RC oscillator provides autonomous brown-out recovery without external components, critical for unattended chargers. The 4.5V to 5.5V supply range is directly compatible with USB-derived 5V rails. ADC-free architecture uses comparator-based current sensing with software integration, simplifying the BOM. OTP memory locks the charge algorithm preventing field firmware corruption. Industrial temperature rating supports garage and outdoor applications. Sleep current under 1 µA preserves battery shelf life when not charging.
Được đề xuất
Small Motor Control
The PIC16C54C-20I/SO drives BLDC, brushed DC, and stepper motors in white-goods fans, small pumps, and toys. Its 20MHz throughput executes software commutation loops for 6-step BLDC at up to 30,000 RPM electrical with zero hardware assist. The two-level hardware stack limits interrupt nesting, but PIC16C5X polled architecture avoids interrupts entirely for predictable timing. TMR0 with 8-bit prescaler generates PWM frequencies from 1 kHz to 20 kHz for silent motor operation. OTP firmware locks proprietary motor profiles against cloning. Industrial -40C to +85C rating tolerates under-hood automotive and pump environments.
Được đề xuất
Sensor Signal Conditioning
The PIC16C54C-20I/SO conditions analog sensor signals in HVAC, building automation, and industrial process controls where cost dominates precision requirements. Its digital I/O pins interface directly to comparator outputs from op-amps and discrete sensors. Software-based linearization and look-up tables compensate thermistor, RTD, and photodiode non-linearities using only 25 bytes of RAM and 768 bytes of OTP. The 20MHz throughput samples sensors at 5 kHz with software filtering. OTP firmware prevents unauthorized calibration changes. Industrial temperature rating suits outdoor and unheated installations.
Được đề xuất
Simple White-Goods Control
The PIC16C54C-20I/SO replaces mechanical timers and electromechanical controllers in washing machines, dishwashers, and microwave ovens. Its 12 I/O pins drive 7-segment displays, keypads, and relay banks directly, eliminating discrete logic ICs and reducing BOM cost. The 768-byte OTP memory holds complete wash-cycle, cook-profile, or dishwasher programs with safety interlocks. Two-level hardware stack simplifies firmware verification to V-model IEC 61508 SIL-1 light industrial compliance. OTP firmware locks proprietary algorithms against field modification. Industrial temperature rating supports under-cabinet and utility-room installations.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC16C54C-20I/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 | PIC16C54C-20E/SO | PIC16C54C-04I/SO | PIC16F54-I/SO | PIC16C54A-20I/SO |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 18-SOIC (7.50 mm) | 18-SOIC (7.50 mm) - same | 18-SOIC (7.50 mm) - same | 18-SOIC (7.50 mm) - same | 18-SOIC (7.50 mm) - same |
| Program Memory | 768 B OTP | 768 B OTP - same | 768 B OTP - same | 768 B Flash - re-programmable | 768 B OTP - same |
| Max CPU Speed | 20 MHz | 20 MHz | 4 MHz | 20 MHz | 20 MHz |
| Supply Voltage | 4.5V to 5.5V | 4.5V to 5.5V | 4.5V to 5.5V | 2.0V to 5.5V | 4.5V to 5.5V |
| Operating Temperature | -40C to +85C | -40C to +125C (extended) | -40C to +85C | -40C to +85C | -40C to +85C |
| I/O Pins | 12 | 12 | 12 | 12 | 12 |
| RAM | 25 B | 25 B | 25 B | 25 B | 25 B |
Bảo phân biệt quan trọng
- Highest-speed OTP option in PIC16C5X family (vsPIC16C54C-04I/SO)
- Industrial temperature grade for harsh environments (vsPIC16C54C-20E/SO)
- Cost-optimized OTP for high-volume production (vsPIC16F54-I/SO)
Ghi chú thiết kế
PIC16C54C-20I/SO requires a clean 4.5V to 5.5V supply. Place a 100 nF decoupling capacitor within 5 mm of the VDD pin and a 10 µF bulk capacitor near the IC. The /SO suffix indicates lead-free matte-tin finish rated for 260°C peak reflow per JEDEC J-STD-020. Brown-out detection is NOT integrated; external reset supervisor like MCP100 or equivalent is recommended for industrial reliability.
Estimated: oscillator start-up with low-cost ceramic resonators at 20 MHz requires 1 ms power-on delay before code execution. Pull MCLR high through a 10 kΩ resistor and add a 100 nF cap to ground for clean reset. Do not drive I/O pins before configuring TRISA/TRISB - all pins default to input to prevent output contention at power-up. Watchdog timer must be cleared within its 18 ms (typical) period or full reset occurs.
The 18-SOIC package has a thermal resistance theta-JA of approximately 75 C/W, adequate for the 5V/20MHz/12-I/O operating envelope. Place the IC at least 3 mm from board edges to avoid ESD stress during handling. Route the MCLR trace away from RB7 high-voltage programming signals to prevent noise-induced spurious resets during in-circuit programming via ICSP.
Thông tin tuân thủ
RoHS compliant per Microchip product page. /SO suffix indicates lead-free matte-tin plating. Not AEC-Q100 qualified - choose PIC16C54C-20E/SO or other automotive-grade PIC16 variants for AEC-Q100 requirements.