PIC16C54-RC/SS - 8-bit OTP MCU, 4MHz RC Osc, SSOP-20 | Microchip
MPN: PIC16C54-RC/SS ✗ Cuối đờiPIC16C54-RC/SS Tóm tắt
What is a microcontroller? A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (ROM/Flash/EPROM), working memory (RAM), and configurable I/O peripherals. An 8-bit MCU like the PIC16C54 executes instructions on 8-bit-wide data with a 12-bit instruction word, combining deterministic timing with extremely low cost. MCUs sit in the broader hierarchy of embedded computing alongside microprocessors and SoCs, serving as the always-on logic brain for appliances, sensors, and control loops.
Key features include 33 single-word, single-cycle RISC instructions (most execute in 200 ns at 20 MHz equivalent), a two-level-deep hardware stack, and seven or eight special function hardware registers. The 8-bit Timer0 (TMR0) with an 8-bit prescaler provides deterministic event timing, while direct, indirect, and relative addressing modes cover most control-flow patterns. Power-fail reset, watchdog timer, and code-protection features are available across the family.
Architecturally, the PIC16C54 uses a Harvard-style RISC core with separate program and data buses, giving it a 2:1 code-compression advantage over competing 8-bit CISC MCUs in its class. The 12-bit instruction word keeps opcode fetch and execution in one clock cycle. The device is fabricated on a low-power CMOS process, and its fully-static design allows the clock to be stopped without losing register state.
Typical applications include low-cost consumer appliances, simple sensor interfaces, RC-servo/IR remote-control transmitters, and disposable medical or industrial controllers where price dominates the BOM. The 0 to 70 °C commercial temperature range and SSOP-20 footprint suit compact through-hole-free assemblies on consumer-grade PCBs.
When designing with this part, derate the RC oscillator's frequency tolerance (typically ±5 to ±10 % over temperature and voltage) against any timing-sensitive function, or step up to an 'XT' or 'HS' crystal variant. OTPs cannot be reprogrammed, so verify firmware on a JW-windowed or ICE device before committing to the production OTP.
This page synthesizes distributor pricing, drop-in same-package alternatives, parametric comparison, and practical design notes not consolidated in the manufacturer datasheet.
Bộ thay thế dễ dàng lắp đặt cho PIC16C54-RC/SS — 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 PIC16C54-RC/SS (cùng hình factor và footprint) — khác nhau ở Package, Program Memory Type, Timers, Program Memory Size, Core Architecture.
PIC16C54C-04/SS
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C54A-04/SS
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C54C-04I/SS
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C54C-20I/SS
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C54CT-20E/SS
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C54AT-10/SS
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C54-RC/SS Tỷ lệ tối đa & tính chất điện
| Series | PIC16C5X |
| Core Processor | PIC |
| Core Size | 8-bit |
| Program Memory Size | 0.75 KB (512 x 12) |
| Program Memory Type | OTP (EPROM) |
| RAM Size | 25 bytes |
| Number of I/O | 12 |
| Oscillator Type | External RC (RC suffix) |
| Tần số xung maksimum | 4 MHz |
| Supply Voltage Range | 3.25 V to 6.25 V |
| Khoảng nhiệt độ hoạt động | 0 °C to 70 °C (commercial) |
| Hộp | 20-SSOP (5.30 mm body width) |
| Kiểu lắp đặt | Surface Mount |
| Instruction Set | 33 single-word/single-cycle RISC instructions |
| Hardware Stack | 2 levels |
| Timers | 1 x 8-bit (TMR0 with prescaler) |
| Peripherals | Watchdog Timer (WDT), Power-on Reset |
| Trạng thái RoHS | Compliant |
Cấu hình chân PIC16C54-RC/SS
| Chân 1 | RA2 — Bidirectional I/O pin, also used for analog or digital peripheral functions |
| Chân 2 | RA3 — Bidirectional I/O pin |
| Chân 3 | RA4/T0CKI — Bidirectional I/O with Timer0 external clock input |
| Chân 4 | MCLR/VPP — Master Clear reset (active low) / programming voltage input |
| Chân 5 | VSS — Ground reference |
| Chân 6 | RB0/INT — Bidirectional I/O with external interrupt capability |
| Chân 7 | RB1 — Bidirectional I/O |
| Chân 8 | RB2 — Bidirectional I/O |
| Chân 9 | RB3 — Bidirectional I/O |
| Chân 10 | RB4 — Bidirectional I/O with interrupt-on-change |
| Chân 11 | RB5 — Bidirectional I/O with interrupt-on-change |
| Chân 12 | RB6 — Bidirectional I/O with interrupt-on-change / ICSP clock |
| Chân 13 | RB7 — Bidirectional I/O with interrupt-on-change / ICSP data |
| Chân 14 | VDD — Positive supply voltage |
| Chân 15 | OSC2/CLKOUT — Oscillator output / CLKOUT for RC mode |
| Chân 16 | OSC1 — Oscillator input / RC timing component connection |
| Chân 17 | RA0 — Bidirectional I/O |
| Chân 18 | RA1 — Bidirectional I/O |
| Chân 19 | NC — Not connected (per datasheet package pinout) |
| Chân 20 | NC — Not connected (per datasheet package pinout) |
Ứng dụng tiêu biểu
PIC16C54-RC/SS phù hợp cho 6 Áp dụngs: Consumer Appliance Control, IR Remote Control Transmitter, Simple Sensor Interface Module, Toy and Hobby Electronics, Standalone LED Lighting Controller, Disposable Medical / Industrial Controller.
Consumer Appliance Control
The PIC16C54-RC/SS fits consumer appliance control because its 33 single-cycle RISC instructions, 512 x 12 OTP program memory, and 12 GPIO are sufficient for relay sequencing, button-debounce state machines, and 7-segment LED multiplexing. The internal RC oscillator eliminates a crystal and reduces BOM cost by roughly $0.10 in volume, while the SSOP-20 package fits behind a small front-panel display. Compared with discrete logic, one PIC16C54 replaces 5 to 10 TTL gates, simplifying the PCB. Validate OTP firmware on a JW-windowed sample before committing to production OTP.
Được đề xuất
IR Remote Control Transmitter
The PIC16C54-RC/SS suits single-button or multi-button IR remote transmitters because TMR0 with its 8-bit prescaler can synthesize 38 kHz or 40 kHz carrier frequencies directly from the RC oscillator with acceptable tolerance for short-range line-of-sight links. The 12 GPIO drive a 4x4 scan matrix or direct LED modulation, and the small SSOP-20 footprint fits inside a CR2032-keyfob enclosure. The RC oscillator's ±5 to ±10 % drift does not matter for carrier duty-cycle generation. PIC16C54-RC/SS plus a transistor and IR LED costs less than a dedicated encoder IC for sub-50k unit volumes.
Được đề xuất
Simple Sensor Interface Module
The PIC16C54-RC/SS handles simple sensor conditioning for thermistor, photodiode, or contact-closure inputs by reading a single analog threshold or debouncing mechanical contacts in firmware. Its 12 GPIO can drive indicator LEDs and a UART bit-bang or one-wire interface to a host, and the RC oscillator removes the cost of an external resonator. Use the watchdog timer to recover from brown-out events on noisy industrial sensor lines. The 0 to 70 °C commercial temperature range suits indoor HVAC, appliance, and lighting sensor nodes; for outdoor use, migrate to the industrial-grade PIC16C54C-04I/SS variant.
Được đề xuất
Toy and Hobby Electronics
The PIC16C54-RC/SS is widely used in low-cost electronic toys, model-train controllers, and hobby robotics because the BOM is essentially MCU + RC components + LEDs - no crystal, no EEPROM, no programming header. The PIC16C5X instruction set is simple enough that beginners can hand-assemble code, and the 4 MHz core is fast enough for PWM servo control and sound synthesis. Replace the PIC16C54-RC/SS with the Flash-based PIC16F54 to allow field firmware updates during product development, then drop back to OTP for cost-down production.
Được đề xuất
Standalone LED Lighting Controller
The PIC16C54-RC/SS drives standalone LED chasers, sign animations, and decorative lighting strips by combining TMR0 interrupt-driven PWM with the 25-byte RAM buffer for animation frames. Each of the 12 GPIO can sink 25 mA, enough to drive a small LED or low-side MOSFET for higher-current strings. The 0 to 70 °C operating range and SSOP-20 footprint suit sealed indoor fixtures where heat dissipation is shared with the LED board. Add a ULN2003 or discrete transistors for high-power RGB strips without changing the MCU footprint.
Được đề xuất
Disposable Medical / Industrial Controller
The PIC16C54-RC/SS is well-suited to disposable single-use medical or industrial controllers (e.g., low-cost infusion monitors, test-strip readers, or factory-line counter modules) because OTP memory locks firmware permanently, preventing reverse engineering of calibration data. The 0.75 KB program memory holds simple lookup-table calibration, and the RC oscillator eliminates alignment-sensitive crystal costs in high-volume automated assembly. For long-life industrial installations, migrate to the industrial-temperature PIC16C54C-04I/SS rated -40 to +85 °C to ensure field reliability.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC16C54-RC/SS — 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-04/SS | PIC16C54A-04/SS | PIC16C54C-04I/SS | PIC16C54C-20I/SS | PIC16C54CT-20E/SS | PIC16C54AT-10/SS |
|---|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 20-SSOP (5.30 mm) | 20-SSOP - same | 20-SSOP - same | 20-SSOP - same | 20-SSOP - same | 20-SSOP - same | 20-SSOP - same |
| Max Clock Frequency | 4 MHz | 4 MHz | 4 MHz | 4 MHz | 20 MHz | 20 MHz | 10 MHz |
| Program Memory | 0.75 KB (512 x 12) OTP | 0.75 KB OTP | 0.75 KB OTP | 0.75 KB OTP | 0.75 KB OTP | 0.75 KB OTP | 0.75 KB OTP |
| RAM Size | 25 bytes | 25 bytes | 25 bytes | 25 bytes | 25 bytes | 25 bytes | 25 bytes |
| GPIO Count | 12 | 12 | 12 | 12 | 12 | 12 | 12 |
| Operating Temperature | 0 °C to +70 °C (commercial) | 0 °C to +70 °C | 0 °C to +70 °C | -40 °C to +85 °C (industrial) | -40 °C to +85 °C | -40 °C to +125 °C (extended) | 0 °C to +70 °C |
| Lifecycle Status | NRND | NRND | NRND | NRND | NRND | NRND | NRND |
Bảo phân biệt quan trọng
- Mature, lowest-cost OTP 8-bit MCU in SSOP-20 (vsPIC16F54)
- Internal RC oscillator eliminates crystal cost (vsPIC16C54-XT/SS)
- SSOP-20 surface-mount footprint with full PIC16C5X pinout (vsPIC16C54-RC/P (PDIP-18))
Ghi chú thiết kế
Place a 0.1 µF ceramic decoupling capacitor within 5 mm of the PIC16C54-RC/SS VDD pin (pin 14) and a bulk 10 µF electrolytic or tantalum on the same supply rail. The internal RC oscillator draws transient current on each clock edge; inadequate decoupling will cause VDD droop that resets the part via the brown-out detector. The PIC16C5X power-on reset circuit requires VDD rise time below a threshold; slow-rising supplies from large capacitors may need an external supervisor or push-button reset.
The 'RC' oscillator variant's frequency tolerance is typically ±5 to ±10 % over the 0 to 70 °C commercial range and 3.25 to 6.25 V supply window. Do not use this part for UART baud-rate generation, IR carrier synthesis tighter than ±10 %, or any timing-sensitive protocol. If your design needs accurate timing, choose the 'XT' (crystal) variant for ±50 ppm or 'HS' (high-speed crystal) for 20 MHz operation. Also remember the device is OTP - any firmware bug costs a full reel of parts.
The SSOP-20 (5.30 mm body) package has 0.65 mm pitch leads that require precise stencil aperture design for reflow soldering. Use a 4 mil stainless-steel stencil with apertures reduced by 1 mil on each side to prevent solder bridging between the fine-pitch pins. Land pads should be 0.40 mm wide by 1.50 mm long with NSMD (non-solder mask defined) geometry for best thermal fatigue performance. Hand-soldering SSOP-20 is feasible with a fine-tip iron, 0.020 inch diameter lead-free solder wire, and magnification, but reflow is strongly preferred for production.
Keep the RC oscillator components (external resistor on OSC1 and capacitor to ground) within 5 mm of pins 15 and 16 to minimize stray capacitance that pulls the oscillator off-frequency. Route the MCLR/VPP trace (pin 4) directly to a reset supervisor or pull-up resistor; long MCLR traces pick up noise and cause spurious resets. Avoid routing switching signals or relay coils near OSC1/OSC2 because the RC oscillator is sensitive to injection of high-frequency energy that shifts the perceived timing.
Thông tin tuân thủ
RoHS and REACH compliance per Microchip product page. AEC-Q100 not applicable - automotive designs should use PIC16C54C-04I/SS industrial temp grade or PIC16F54. Conflict-minerals reporting per Microchip standard policy.