PIC16C54T-RC/SS - 4MHz 8-Bit OTP MCU 768B | Microchip
料号： PIC16C54T-RC/SS ✗ 停产| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $2.85 | $2.85 |
| 10 | $2.55 | $25.50 |
| 100 | $2.1 | $210.00 |
| 500 | $1.78 | $890.00 |
| 1,000 | $1.5 | $1,500.00 |
PIC16C54T-RC/SS 概述
What is a PIC16C5x microcontroller? The PIC16C5x is Microchip's original low-cost, high-performance 8-bit RISC family, widely regarded as the ancestor of all modern PIC MCUs. It uses a Harvard architecture with separate program and data buses, a 12-bit-wide instruction word, and a fixed 33-instruction set. In the broader taxonomy, the PIC16C5x sits under: microcontroller -> embedded microcontroller -> 8-bit MCU -> RISC MCU -> EPROM/ROM-based MCU -> power management and control IC family.
Key features include 33 single-word/single-cycle RISC instructions, 2:1 code compression versus competing 8-bit MCUs through 12-bit-wide instructions, Power-On Reset (POR), Watchdog Timer (WDT) with on-chip RC oscillator, and programmable code protection. The 12-bit instruction width yields compact code density uncommon in 8-bit parts, while the two-level deep hardware stack and 2 K x 12 program-memory address space support compact firmware designs.
The PIC16C5x uses a RISC pipeline with single-cycle execution (except branches, which take two cycles), and integrates a precision 4 MHz internal RC-style oscillator reference. With a 4 MHz clock and 4 Tcy per instruction cycle, each instruction executes in 1 microsecond, delivering roughly 1 MIPS of throughput. The device's CMOS design provides low power consumption suitable for both battery and line-powered applications.
Typical applications include appliance control, automotive body electronics, low-power remote sensors, security and access systems, and general-purpose embedded logic replacement. The wide 3.0 V to 5.5 V supply range and small SSOP-20 footprint make it well-suited for cost-sensitive, space-constrained designs.
When designing with the PIC16C5x, ensure the OTP-programmed firmware is finalized before volume production - the "C" ROM family is one-time-programmable, so any firmware change requires a new part. Use the WDT for unattended recovery from software or hardware faults, and add 0.1 uF ceramic bypass capacitors near VDD/SS for stable operation.
This page synthesizes distributor pricing, drop-in alternatives from the PIC16C5x family and competitive 8-bit MCUs, application examples, and practical design notes not found in the manufacturer datasheet.
直接替换替代料： PIC16C54T-RC/SS ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： PIC16C54T-RC/SS （相同外形与封装尺寸） ——差异在于 Program Memory Type, Package, Program Memory Size, Operating Temperature, Timers.
快速对比工具——选择替代料号进行并排对比：
PIC16C54-RC/SS
✅ 直接替换✓ 有现货
$1.04 / 个
查看数据手册 →PIC16C54T-RC/SO
✅ 直接替换✓ 有现货
$1.18 / 个
查看数据手册 →PIC16C54C-04/SS
✅ 直接替换✓ 有现货
$0.65 / 个
查看数据手册 →PIC16C54C-04I/SS
✅ 直接替换✓ 有现货
$1.34 / 个
查看数据手册 →PIC16C54-RCE/SS
✅ 直接替换✓ 有现货
$1.74 / 个
查看数据手册 →PIC16F54-I/SS
✅ 直接替换✓ 有现货
$0.68 / 个
查看数据手册 →PIC16C54T-RC/SS 最大额定值与电气特性
| Core | PIC 8-bit RISC |
| Series | PIC16C5x (PIC16C54) |
| Program Memory Type | OTP (One-Time Programmable) EPROM |
| Program Memory Size | 768 B (512 x 12) |
| RAM Size | 25 x 8 bytes |
| Maximum CPU Frequency | 4 MHz |
| Supply Voltage Range | 3.0 V to 5.5 V |
| Number of I/O Pins | 12 |
| 数据总线宽度 | 8 bit |
| Instruction Set Width | 12 bit |
| Number of Instructions | 33 single-word/single-cycle |
| Peripherals | POR, WDT (Watchdog Timer) |
| 封装 | 20-pin SSOP (5.30 mm body width) |
| 安装类型 | Surface Mount (Tape and Reel) |
| 工作温度 | 0C to +70C (commercial) |
| RoHS 状态 | Compliant |
PIC16C54T-RC/SS 引脚配置
| 引脚 1 | RA2 — Bidirectional I/O port A bit 2 |
| 引脚 2 | RA3 — Bidirectional I/O port A bit 3 |
| 引脚 3 | RB0 — Bidirectional I/O port B bit 0 |
| 引脚 4 | RB1 — Bidirectional I/O port B bit 1 |
| 引脚 5 | RB2 — Bidirectional I/O port B bit 2 |
| 引脚 6 | RB3 — Bidirectional I/O port B bit 3 |
| 引脚 7 | RB4 — Bidirectional I/O port B bit 4 |
| 引脚 8 | RB5 — Bidirectional I/O port B bit 5 |
| 引脚 9 | RB6 — Bidirectional I/O port B bit 6 |
| 引脚 10 | RB7 — Bidirectional I/O port B bit 7 |
| 引脚 11 | VDD — Positive supply voltage |
| 引脚 12 | GND — Ground reference |
| 引脚 13 | OSC1 — Oscillator input / external clock input |
| 引脚 14 | OSC2 — Oscillator output (crystal mode) |
| 引脚 15 | T0CKI — Timer0 clock input / RA0 |
| 引脚 16 | INT — External interrupt / RA1 |
| 引脚 17 | MCLR — Master clear (reset) input, active low |
| 引脚 18 | NC — Not connected (per datasheet) |
| 引脚 19 | NC — Not connected (per datasheet) |
| 引脚 20 | NC — Not connected (per datasheet) |
典型应用
PIC16C54T-RC/SS 适用于 6 应用s: Appliance Control (Washers, Microwaves), Automotive Body Electronics, Low-Power Remote Sensor Nodes, Security and Access Control Panels, Replacement of Discrete Logic / Glue Logic, Toys, Hobby Electronics, and Educational Kits.
Appliance Control (Washers, Microwaves)
The PIC16C54T-RC/SS fits white-goods appliance control because its 4 MHz PIC core delivers deterministic 1 MIPS throughput, the 12 GPIO pins directly drive relays and triacs via opto-isolators, and the 768 B OTP holds timing sequences for wash cycles or microwave power levels. With POR and WDT integrated, no external supervisor IC is required, reducing BOM cost. The wide 3.0 V to 5.5 V supply tolerates unregulated 5 V rails common in motor-driven appliances. Designers typically pair the part with an 8-bit Darlington array (e.g., ULN2803) to switch solenoids and indicator LEDs directly from the GPIO pins, each capable of 25 mA source/sink.
推荐
Automotive Body Electronics
The PIC16C54T-RC/SS serves automotive body-control applications such as interior lighting, window lifters, and seat-position memory, where its small SSOP-20 footprint fits behind dashboard connectors and the 12-bit instruction word compresses state-machine firmware into 768 B OTP. The 4 MHz clock and 25 mA GPIO drive capability directly switch small automotive loads. For under-hood applications, the industrial-temperature variant PIC16C54C-04I/SS is preferred for its -40C to +85C range, while commercial-temp units like the PIC16C54T-RC/SS are typically used in cabin-mounted modules. Always derate supply voltage against load-dump transients with a TVS clamp.
推荐
Low-Power Remote Sensor Nodes
The PIC16C54T-RC/SS is suited to low-power remote sensor endpoints (soil moisture, environmental monitors, building automation) thanks to its fully-static CMOS core, which allows the 4 MHz clock to be gated for sub-microamp standby current. The 12 GPIO pins read multiple sensor channels and drive a low-power radio or LoRa transmitter, while the WDT wakes the part periodically to take readings and transmit. With 768 B OTP holding the sensor-fusion algorithm and 25 B RAM for sample buffers, the part is a cost-effective node controller for IoT-style deployments where flash reprogrammability is not required.
推荐
Security and Access Control Panels
The PIC16C54T-RC/SS is well-suited to legacy alarm panels, keypad controllers, and access-control readers where its 12-bit PIC instruction set holds keyscan debounce routines, EEPROM emulation, and simple encryption in 768 B of OTP. The 12 GPIO directly scan a 4x4 matrix keypad (8 lines) and drive status LEDs, while a serial interface (bit-banged UART) talks to a central panel. The OTP memory also provides natural security: once programmed, the firmware cannot be read back without erasing, deterring casual reverse engineering.
推荐
Replacement of Discrete Logic / Glue Logic
The PIC16C54T-RC/SS is often used as a one-chip replacement for 74-series glue-logic clusters in cost-sensitive designs. A single PIC16C5x can replace 3-5 discrete logic ICs by sequencing outputs based on input patterns stored in OTP code, freeing PCB area and reducing BOM count. The 1 MIPS throughput handles debouncing, sequencing, and simple state machines with cycle-accurate timing. Designers port existing HC/AC-logic designs by writing state diagrams in PIC assembly, then program the OTP once and never change the firmware.
推荐
Toys, Hobby Electronics, and Educational Kits
The PIC16C54T-RC/SS is a popular choice for educational kits and hobby electronics because of its low unit cost, simple 33-instruction RISC architecture, and wide availability through hobbyist distributors. Students learn embedded programming on the same PIC core that launched the modern microcontroller era, while the 4 MHz clock and 1 MIPS throughput are sufficient to drive LED chasers, servo controllers, and simple robotic platforms. The 20-pin SSOP package is breadboard-friendly with breakout boards, and the OTP memory forces disciplined firmware development.
推荐
推荐产品汇总
工程参考数据： PIC16C54T-RC/SS ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | PIC16C54-RC/SS | PIC16C54T-RC/SO | PIC16C54C-04/SS | PIC16C54C-04I/SS | PIC16F54-I/SS |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 20-SSOP (5.30 mm) | 20-SSOP - same | 20-SOIC (7.50 mm) - different footprint | 20-SSOP - same | 20-SSOP - same | 20-SSOP - same |
| Maximum CPU Frequency | 4 MHz | 4 MHz | 4 MHz | 4 MHz | 4 MHz | 20 MHz |
| Program Memory Type | OTP EPROM | OTP EPROM | OTP EPROM | OTP EPROM | OTP EPROM | Flash (reprogrammable) |
| Program Memory Size | 768 B (512 x 12) | 768 B | 768 B | 768 B | 768 B | 768 B |
| RAM Size | 25 B | 25 B | 25 B | 25 B | 25 B | 25 B |
| Number of I/O Pins | 12 | 12 | 12 | 12 | 12 | 12 |
| Supply Voltage Range | 3.0 V to 5.5 V | 3.0 V to 5.5 V | 3.0 V to 5.5 V | 3.0 V to 5.5 V | 3.0 V to 5.5 V | 2.0 V to 5.5 V (wider) |
| Operating Temperature | 0C to +70C (commercial) | 0C to +70C | 0C to +70C | 0C to +70C | -40C to +85C (industrial) | -40C to +85C (industrial) |
关键差异点
- Tape-and-reel packaging for high-volume SMT assembly （对比 PIC16C54-RC/SS)
- SSOP-20 small-footprint option vs SOIC-20 （对比 PIC16C54T-RC/SO)
- Modern flash migration path available in same footprint （对比 PIC16F54-I/SS)
设计说明
Decouple VDD to ground with a 0.1 uF ceramic capacitor placed within 5 mm of the VDD pin. For systems with noisy switching loads (relays, triacs) on the same supply, add a 10 uF tantalum or aluminum electrolytic bulk capacitor. The PIC16C54T-RC/SS supply range is 3.0 V to 5.5 V; operation outside this range is undefined and may damage the OTP memory cell.
The PIC16C54T-RC/SS uses One-Time-Programmable (OTP) EPROM, which means firmware cannot be modified after programming. Verify your firmware thoroughly before committing to volume programming - any code change requires a new device batch. Always keep the MCLR pin pulled high through a 10 kohm resistor and tied to VDD; floating MCLR can cause spurious resets in noisy environments.
The 20-pin SSOP package has a 0.65 mm pin pitch and 5.30 mm body width - small enough that hand-soldering requires care. Use a reflow profile with peak temperature of 250C for no more than 30 seconds. Add a ground pour under the device to improve thermal dissipation; even though the PIC16C5x is low-power, OTP programming draws extra current that benefits from a thermal copper plane.
Keep the oscillator traces (OSC1/OSC2) short and away from high-current switching traces. For crystal mode, place load capacitors (typically 15-33 pF) close to the pins. For RC oscillator mode (the "RC" in this part number), the oscillator frequency depends on the external resistor and capacitor; consult the PIC16C5x datasheet section on OSC options for component selection curves.
合规信息
RoHS compliant per Microchip product declaration. Not AEC-Q100 qualified; for automotive applications use the PIC16C54C-04I/SS industrial-temp variant and apply additional qualification. Lead-free reflow-compatible (peak 250C).