PIC16C54CT-20E/SS - 8-bit OTP MCU, 20MHz, 768B | Microchip
MPN: PIC16C54CT-20E/SS ✓ Hoạt độngPIC16C54CT-20E/SS Tóm tắt
What is an 8-bit OTP microcontroller? An OTP (One-Time Programmable) microcontroller embeds non-volatile program memory that can be written exactly once after manufacture, combining the low unit cost of masked-ROM MCUs with the design flexibility of field programming. The PIC16C5X family sits in the microcontrollers -> 8-bit MCUs -> RISC microcontrollers -> embedded controllers -> semiconductor hierarchy and is widely used in cost-sensitive, deterministic, real-time control applications where Cortex-M class devices would be over-spec.
The PIC16C54CT-20E/SS uses a Harvard RISC architecture with separate program and data buses, enabling single-cycle instruction fetch and deterministic execution. The 33-instruction set simplifies code generation while delivering 2:1 code compression over competing 8-bit CISC architectures. On-chip peripherals include a watchdog timer, power-on reset, and a programmable code-protection bit, reducing external component count.
Typical applications include automotive body controllers, appliance control boards, simple sensor interfaces, low-end consumer products, and industrial control logic where cost and deterministic timing outweigh the need for large memory or advanced peripherals. The 12 I/O pins are organized as Port A (5 pins) and Port B (8 pins) per the datasheet pinout convention.
When designing with this device, allocate sufficient decoupling (100 nF + 10 µF) near VDD, keep the MCLR pin pull-up close to the IC, and respect the 5 V supply range; operation below 4.5 V is not guaranteed. For new designs consider the flash-based PIC16F54 equivalent for code re-programmability.
This page synthesizes distributor stock, parametric substitutes, and pin-level engineering guidance not consolidated in the Microchip datasheet, giving procurement and design engineers a faster selection path.
Bộ thay thế dễ dàng lắp đặt cho PIC16C54CT-20E/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 PIC16C54CT-20E/SS (cùng hình factor và footprint) — khác nhau ở Package, Program Memory Size, Program Memory Type, Core Architecture, Instruction Cycle Time.
PIC16C54C-20E/SS
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC16C54C-20I/SS
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C54A-20E/SS
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C54A-20I/SS
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C54CT-04/SS
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C54CT-20E/SO
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C54CT-20E/SS Tỷ lệ tối đa & tính chất điện
| Core Architecture | 8-bit PIC RISC (Harvard) |
| Series | PIC® 16C (PIC16C5X family, PIC16C54C die) |
| Program Memory Type | OTP EPROM (One-Time Programmable) |
| Program Memory Size | 768 B (512 x 12 words) |
| Instruction Word Width | 12 bits |
| RAM Size | 25 B |
| Tần số xung maksimum | 20 MHz |
| Instruction Cycle Time | 200 ns at 20 MHz |
| Number of I/O Pins | 12 |
| Supply Voltage (VDD) | 4.5 V to 5.5 V |
| Nhiệt độ hoạt động | -40 °C to +125 °C (TA) |
| Hộp | 20-pin SSOP (0.209", 5.30 mm body width) |
| Kiểu lắp đặt | Surface Mount (Gull Wing) |
| Number of Instructions | 33 |
| On-chip Peripherals | Watchdog Timer, Power-On Reset, Code Protection |
| Speed Grade Suffix | 20E (20 MHz, Extended temp) |
| Compliance | RoHS compliant per Microchip product page |
Cấu hình chân PIC16C54CT-20E/SS
| 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 / External interrupt |
| 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 | VSS — Ground reference (secondary) |
| Chân 15 | OSC2/CLKOUT — Oscillator crystal output / Clock out (Fosc/4) |
| Chân 16 | OSC1/CLKIN — Oscillator crystal input / External clock input |
| Chân 17 | RA0 — Bidirectional I/O Port A bit 0 |
| Chân 18 | RA1 — Bidirectional I/O Port A bit 1 |
| Chân 19 | VSS — Ground reference |
| Chân 20 | VDD — Positive supply voltage (4.5 V to 5.5 V) |
Ứng dụng tiêu biểu
PIC16C54CT-20E/SS phù hợp cho 6 Áp dụngs: Automotive Body Electronics, Appliance Control Boards, Low-End Consumer Products, Industrial Sensor Interfaces, Simple Motor and Relay Control, Security and Access-Control Panels.
Automotive Body Electronics
The PIC16C54CT-20E/SS fits automotive body controllers — seat controllers, mirror adjusters, and central-locking modules — where its -40 °C to +125 °C extended temperature rating, 20 MHz deterministic core, and 12 GPIO are sufficient. The 33-instruction set executes logic decisions in a single 200 ns cycle, well below typical 10 ms body-control loop deadlines. With 768 B of OTP, the device can host small state machines, key-debounce routines, and PWM routines for LED or motor control without external memory. Compared with switching to a Cortex-M0+, the PIC16C54CT-20E/SS delivers sub-$2 unit cost at 1 kpcs while drawing under 2 mA active, easing thermal design in enclosed mirror housings.
Được đề xuất
Appliance Control Boards
In white-goods appliances such as microwave ovens, washing machines, and dishwashers, the PIC16C54CT-20E/SS serves as the user-interface and timing controller. Its 12 I/O pins directly drive 7-segment LED displays, keypads, and triac-fired relays without external glue logic. The 20 MHz core handles line-frequency zero-cross detection and triac phase-angle control with 200 ns resolution, sufficient for 60 Hz / 120 Hz dimmer and heater regulation. OTP memory is well-matched to mature, never-updated appliance firmware, and the 20-SSOP footprint fits the dense PCB layouts common to control panels. Combined with a Microchip HVLC driver companion, it forms a complete BOM-friendly solution.
Được đề xuất
Low-End Consumer Products
For toys, remote controls, novelty lighting, and other cost-driven consumer devices, the PIC16C54CT-20E/SS provides an optimal cost-per-function balance. Its 768 B OTP memory holds small fixed-pattern routines such as IR remote decoding, chase-pattern LED sequencing, or simple sound-effect generation. The 25-byte RAM supports stack-based subroutines and a handful of state variables. Combined with the internal watchdog timer and power-on reset, the device needs no external supervisory components, reducing BOM cost. The 20-SSOP package offers a small footprint ideal for handheld form factors.
Được đề xuất
Industrial Sensor Interfaces
The PIC16C54CT-20E/SS acts as a low-cost sensor-conditioning MCU in industrial 4-20 mA loops, simple limit-switch controllers, and counter/timer modules. Its 12 GPIO can read multiple digital sensors and drive optocouplers, while the 20 MHz core performs debouncing, filtering, and pulse counting at rates up to 5 MIPS. The extended -40 °C to +125 °C operating range allows deployment near motors, hydraulics, or outdoor enclosures. The 4.5 V to 5.5 V supply range matches 5 V regulated industrial rails without needing a separate LDO, simplifying board layout and reducing component count.
Được đề xuất
Simple Motor and Relay Control
For low-power brushed DC motors, solenoids, and small relay-driven actuators, the PIC16C54CT-20E/SS provides adequate processing power at minimum cost. Its 12 GPIO can source or sink enough current to drive logic-level MOSFETs through gate resistors, and the 20 MHz instruction cycle supports software PWM at frequencies above audible range (>20 kHz) for silent motor commutation. The watchdog timer recovers the controller from ESD-induced lockups on the factory floor, while OTP memory protects the calibration and ramp profiles from field tampering. The 20-SSOP package dissipates <2 W comfortably without external heat sinking.
Được đề xuất
Security and Access-Control Panels
The PIC16C54CT-20E/SS can serve as a keypad scanner or RFID-tag co-processor in low-tier security panels. With 25 bytes of RAM and 33 instructions, it easily implements 4x4 matrix keypad scanning, debounce timers, and Wiegand-format output to a host controller. The internal code-protection bit prevents firmware extraction from a stolen board — important for security SKUs. The 5 V supply aligns with the regulator architecture commonly used in 12 V or 24 V security panels, eliminating the need for an additional LDO stage.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC16C54CT-20E/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-20E/SS | PIC16C54C-20I/SS | PIC16C54A-20E/SS | PIC16C54CT-04/SS |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 20-SSOP | 20-SSOP - same | 20-SSOP - same | 20-SSOP - same | 20-SSOP - same |
| Core / Family | PIC16C54C, 8-bit RISC | PIC16C54C, 8-bit RISC | PIC16C54C, 8-bit RISC | PIC16C54A, 8-bit RISC | PIC16C54C, 8-bit RISC |
| Max Clock Frequency | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 4 MHz |
| Program Memory | 768 B OTP (512 x 12) | 768 B OTP (512 x 12) | 768 B OTP (512 x 12) | 768 B OTP (512 x 12) | 768 B OTP (512 x 12) |
| Operating Temperature | -40 °C to +125 °C (Extended) | -40 °C to +125 °C (Extended) | -40 °C to +85 °C (Industrial) | -40 °C to +125 °C (Extended) | 0 °C to +70 °C (Commercial, inferred) |
| I/O Pins | 12 | 12 | 12 | 12 | 12 |
| Supply Voltage | 4.5 V to 5.5 V | 2.0 V to 6.0 V (wider C-rev range) | 2.0 V to 6.0 V | 2.0 V to 6.0 V | 4.5 V to 5.5 V |
| Lifecycle Status | Active | Active | Active | Active | Active |
Bảo phân biệt quan trọng
- Extended temperature grade -40 °C to +125 °C (vsPIC16C54C-20I/SS)
- 20 MHz instruction cycle for real-time control (vsPIC16C54CT-04/SS)
- Same 20-SSOP footprint across the PIC16C5X family (vsPIC16C54CT-20E/SO)
Ghi chú thiết kế
Place a 100 nF X7R ceramic decoupling capacitor within 5 mm of the VDD pin (pin 20) and a 10 µF bulk electrolytic on the same node for relay or motor loads. VDD must remain within 4.5 V to 5.5 V; brown-out reset is not specified for the PIC16C54C OTP variant, so transient dips below 4.5 V may corrupt program flow without notice.
OTP (One-Time Programmable) memory cannot be erased. Validate firmware on a flash-based PIC16F54 or PIC16C54 development board first, then commit to a single PIC16C54C production programming pass. Estimated: the unit cost advantage of OTP versus flash is roughly 15-25 % per IC at 1 kpcs volumes, but a single OTP scrap batch can wipe out that saving.
Route the MCLR pull-up (typically 10 kΩ to VDD) close to pin 4 and keep the trace short to prevent ESD-induced resets. Place the crystal (or ceramic resonator) within 5 mm of pins 15-16 and guard both traces with a ground ring to avoid injecting oscillator noise into adjacent analog or relay traces.
Thông tin tuân thủ
RoHS compliance and lead-free SSOP finish per Microchip product page. AEC-Q100 not explicitly listed in the data; extended -40 °C to +125 °C temperature grade is automotive-suitable but formal AEC-Q100 qualification status was not stated in the verified web data.
