PIC16C54T-10E/SO - 8-Bit 10MHz OTP MCU, 768B | Microchip
MPN: PIC16C54T-10E/SO ✗ Cuối đờiPIC16C54T-10E/SO Tóm tắt
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory, working RAM, and peripherals such as timers and I/O onto one silicon die. Within the broader taxonomy, the PIC16C54 is a Harvard-architecture 8-bit MCU from the mid-1990s PIC16C5x family, positioned below 16-bit and 32-bit MCUs but offering the low cost and simplicity needed for high-volume embedded control. OTP variants like this one are programmed once at production time and are used in cost-sensitive products where field firmware updates are not required.
Key features include a 12-bit instruction word (delivering ~2:1 code compression over typical 8-bit CISC MCUs), a RISC core with only 33 single-word instructions to learn, Power-On Reset (POR), a Watchdog Timer (WDT) for runaway code recovery, and an extended ('E') temperature grade for industrial environments. The 18-SOIC package provides a small footprint (~11.5 x 7.5 mm) suitable for hand-soldered prototypes and automated SMT lines alike. The 'T' suffix denotes Tape and Reel packaging for high-volume assembly.
Typical applications include automotive body electronics, appliance control boards, simple sensor interfaces, remote controls, LED drivers, low-cost toys, and replacement of discrete logic in legacy designs. The PIC16C54 is well suited to tasks that do not require A/D conversion, serial communications, or large memory - these peripherals belong to later PIC16Cxx derivatives. With only 12 I/O pins and 25 bytes of RAM, the MCU is best matched to glue-logic replacement and small-state-machine use cases.
When designing with this part, ensure your firmware fits within 768 bytes (512 instructions). Plan I/O assignments around the shared port-A and port-B structure, and budget for the WDT and POR behavior during power-up. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.
Bộ thay thế dễ dàng lắp đặt cho PIC16C54T-10E/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 PIC16C54T-10E/SO (cùng hình factor và footprint) — khác nhau ở Program Memory Size, Program Memory Type, Package, Core Architecture, Operating Temperature Range.
PIC16C54CT-20E/SO
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C54AT-10E/SO
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C54C-04E/SO
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C54AT-20E/SO
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C54A-20/SO
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C54C-04/SO
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C54T-10E/SO Tỷ lệ tối đa & tính chất điện
| Core Architecture | 8-bit PIC RISC (Harvard) |
| Family | PIC® 16C (PIC16C5x sub-family) |
| Program Memory Type | OTP (One-Time Programmable) EPROM-based |
| Program Memory Size | 768 bytes (512 x 12 bits) |
| RAM | 25 bytes |
| Tần số xung maksimum | 10 MHz |
| Instruction Cycle Time | 200 ns (single cycle), 400 ns (branch) |
| Number of Instructions | 33 single-word |
| I/O Pins | 12 |
| Peripherals | POR, Watchdog Timer (WDT), external interrupt |
| Hộp | 18-SOIC (SO, 0.295" / 7.50 mm body width, gull-wing) |
| Số chân | 18 |
| Kiểu lắp đặt | Surface Mount |
| Packaging | Tape & Reel (T suffix) |
Cấu hình chân PIC16C54T-10E/SO
| Chân 1 | RA2 — Bidirectional I/O pin; Port A bit 2 |
| Chân 2 | RA3 — Bidirectional I/O pin; Port A bit 3 |
| Chân 3 | RA4/T0CKI — Bidirectional I/O pin; TMR0 clock input |
| Chân 4 | MCLR — Master Clear (Reset); active low input |
| Chân 5 | VSS — Ground reference |
| Chân 6 | RA0 — Bidirectional I/O pin; Port A bit 0 |
| Chân 7 | RA1 — Bidirectional I/O pin; Port A bit 1 |
| Chân 8 | RB0/INT — Bidirectional I/O pin; external interrupt source |
| Chân 9 | RB1 — Bidirectional I/O pin; Port B bit 1 |
| Chân 10 | RB2 — Bidirectional I/O pin; Port B bit 2 |
| Chân 11 | RB3 — Bidirectional I/O pin; Port B bit 3 |
| Chân 12 | RB4 — Bidirectional I/O pin; Port B bit 4 |
| Chân 13 | RB5 — Bidirectional I/O pin; Port B bit 5 |
| Chân 14 | RB6 — Bidirectional I/O pin; Port B bit 6 |
| Chân 15 | RB7 — Bidirectional I/O pin; Port B bit 7 |
| Chân 16 | VDD — Positive supply voltage |
| Chân 17 | OSC2 — Oscillator output; crystal/RC connection |
| Chân 18 | OSC1 — Oscillator input; crystal/RC/external clock |
Ứng dụng tiêu biểu
PIC16C54T-10E/SO phù hợp cho 6 Áp dụngs: Automotive Body Electronics, Appliance Control Boards, Remote Control Transmitters, LED Lighting Controllers, Sensor Interface Modules, Replacement of Discrete Logic.
Automotive Body Electronics
The PIC16C54T-10E/SO's extended industrial temperature grade (-40C to +125C per the 'E' suffix), 12 mappable I/O pins, and Watchdog Timer make it well suited to automotive body modules such as lighting controllers, seat-position memories, and door-lock actuators. With 768 bytes of OTP memory it can hold small state-machine firmware (10-20 ms loop tick), and the 10 MHz core gives sub-200 ns instruction timing for tight debounce loops. Engineers typically pair it with the PIC10F202 for redundant watchdogs and the MCP2551 for CAN-bus interfacing. Unlike higher-pin-count PIC16F derivatives, this MCU avoids the BOM cost of ADCs and UART blocks that body modules do not need.
Được đề xuất
Appliance Control Boards
White-goods appliances (washing machines, dishwashers, microwave ovens) often use PIC16C5x MCUs for their motor-control loops and user-interface key-scanning tasks. The PIC16C54T-10E/SO's 12 I/O pins map cleanly onto a 4x3 keypad plus 4 status LEDs, and the 25-byte RAM is sufficient for the small state machines that drive a wash cycle. The 200 ns instruction cycle comfortably handles 50/60 Hz zero-cross detection. A typical reference design places the MCU adjacent to an H-bridge driver such as the MCP14E1 and a triac output stage. Designers choosing this OTP part over Flash parts lock firmware at production, simplifying EMI compliance.
Được đề xuất
Remote Control Transmitters
Low-cost IR/RF remote controls benefit from the PIC16C54T-10E/SO's tiny 768-byte OTP and 25-byte RAM - enough to encode a few dozen keys with Manchester or RC5 protocols. The 10 MHz instruction cycle is overkill for sub-millisecond button-debounce routines, leaving MIPS in reserve for encryption or rolling-code schemes. The extended temperature grade suits outdoor garage-door and gate remote applications. Battery life benefits from the CMOS sleep mode drawing only a few microamps between button presses. Pair it with a 38 kHz IR LED driver transistor and an ASK transmitter module.
Được đề xuất
LED Lighting Controllers
Decorative and architectural LED lighting controllers rely on the PIC16C54T-10E/SO's GPIO drive capability (up to 20 mA per pin) to multiplex LED arrays without external drivers for small matrices. The 12 I/O pins can drive an 8x4 charlieplexed LED grid or four 7-segment displays plus a few mode-indicator LEDs. With 768 bytes of OTP, the MCU can hold fading curves, color tables, and chase-pattern state machines for hobby and professional lighting products. The 200 ns cycle supports fast PWM-like software blinking up to several kHz, eliminating visible flicker.
Được đề xuất
Sensor Interface Modules
The PIC16C54T-10E/SO's interrupt capability on RB0/INT and 8-bit TMR0 timer make it useful as a low-cost front-end for simple sensor signal-conditioning modules: tachometers, optical counters, and thermistor-based temperature-to-frequency converters. Its 768 bytes of OTP fit calibration tables and a linearization routine, while the 25-byte RAM buffers the most recent 8-12 samples for averaging. Extended-temperature operation allows under-hood industrial and HVAC use. The 18-SOIC footprint also keeps the module small enough to fit alongside the sensor housing.
Được đề xuất
Replacement of Discrete Logic
In legacy designs where glue logic has grown into 5+ 74HCxx chips, the PIC16C54T-10E/SO offers a single-chip state-machine replacement that consumes less PCB area and power. With only 12 I/O pins, it cannot replace very wide bus logic, but it cleanly subsumes flip-flop/latch/decoder combinations in vending machines, simple access controllers, and instrumentation front panels. The 200 ns instruction cycle matches the propagation delay of typical 74HC logic families, so timing-sensitive I/O relationships (latch-before-decode, etc.) translate directly. OTP storage prevents firmware drift across production runs.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC16C54T-10E/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 | PIC16C54CT-20E/SO | PIC16C54AT-10E/SO | PIC16C54C-04E/SO | PIC16C54AT-20E/SO | PIC16C54A-20/SO |
|---|---|---|---|---|---|---|
| Package | 18-SOIC (7.50 mm body width) | 18-SOIC (same footprint) | 18-SOIC (same footprint) | 18-SOIC (same footprint) | 18-SOIC (same footprint) | 18-SOIC (same footprint) |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Maximum Clock Frequency | 10 MHz | 20 MHz (-20 grade, +100%) | 10 MHz (same) | 4 MHz (-04 grade, -60%) | 20 MHz (-20 grade, +100%) | 20 MHz (-20 grade, +100%) |
| 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) | 768 B OTP (512 x 12) |
| RAM | 25 B | 25 B | 25 B | 25 B | 25 B | 25 B |
| I/O Pins | 12 | 12 | 12 | 12 | 12 | 12 |
| Silicon Revision | PIC16C54 (original) | PIC16C54C (CMOS revision) | PIC16C54A (silicon 'A' revision) | PIC16C54C (CMOS revision) | PIC16C54A (silicon 'A' revision) | PIC16C54A (silicon 'A' revision) |
| Temperature Grade | Extended (-40C to +125C) | Extended (-40C to +125C) | Extended (-40C to +125C) | Extended (-40C to +125C) | Extended (-40C to +125C) | Commercial (0C to +70C) |
| Lifecycle Status | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete |
Bảo phân biệt quan trọng
- Same 18-SOIC footprint and pinout as the entire PIC16C54 family (vsPIC16C54-10E/P (PDIP variant))
- Higher available clock ceiling on identical silicon with -20 speed grade (vsPIC16C54CT-20E/SO)
- Silicon 'A' revision offers wider VDD and improved WDT behavior (vsPIC16C54AT-10E/SO)
Ghi chú thiết kế
Decouple VDD with a 100 nF ceramic capacitor placed within 5 mm of the PIC16C54T-10E/SO VDD pin (pin 16), plus a bulk 10 uF tantalum or aluminum electrolytic at the regulator output. The MCU draws brief current spikes of up to ~20 mA during internal EPROM programming (if used), so a low-impedance supply is critical. Add a 100 kohm pull-up on MCLR (pin 4) to VDD to ensure a clean reset state. Do not leave VDD floating even in bench testing - undefined behavior results.
Route the crystal or resonator traces (OSC1 pin 18, OSC2 pin 17) as short as possible and keep them away from high-current switching traces - even at 10 MHz the oscillator can pick up noise that causes timing jitter in TMR0. Place the crystal within 10 mm of the MCU and guard the traces with a ground pour. For noise-sensitive analog applications, avoid running RB0/INT traces under the crystal. If using the internal RC oscillator configuration (some PIC16C5x derivatives), the OSC pins may be left floating - consult the datasheet configuration bits first.
The PIC16C54T-10E/SO has 768 bytes of OTP (One-Time Programmable) memory - firmware cannot be updated in the field. Production programming must be done using a Microchip-approved device programmer such as the PICkit 2/3 or MPLAB PM3, and programming is a one-shot operation that consumes the part regardless of success. Always run a blank-device verification pass on prototypes before committing to a programming run. Also note that the Watchdog Timer (WDT) has its own independent oscillator and must be explicitly cleared in firmware via the CLRWDT instruction; failing to do so results in unexpected resets every ~18 ms (typical).
Port B pins on the PIC16C54T-10E/SO have weak internal pull-ups that can be enabled or disabled per pin via software (OPTION register). When interfacing to open-drain buses or button matrices, enable the pull-up on input pins and disable it on output pins. The RA4 pin has open-drain output behavior - it cannot actively drive high, so external pull-ups are mandatory if RA4 is used as an output. Sink capability on all I/O pins is rated up to 25 mA per pin but the total port-current budget is 100 mA sink per port - budget carefully when driving multiple LEDs.
Thông tin tuân thủ
Compliance data not present in the verified web snippet set; the part predates widespread RoHS enforcement and is typically marked as 'not compliant' or 'legacy' on the Microchip product page. Contact Microchip for a current RoHS/REACH/CFSI certificate. AEC-Q100 is not applicable for this non-automotive-specific part number (automotive variants use the -I or -E temp grade designations but are not explicitly AEC-Q100 qualified).
