PIC16C56-XTE/SS - 8-bit OTP MCU, 4MHz, 1.5KB | Microchip
MPN: PIC16C56-XTE/SS ✓ Hoạt độngPIC16C56-XTE/SS Tóm tắt
What is an 8-bit OTP microcontroller? An 8-bit OTP (One-Time Programmable) microcontroller is a low-cost, high-performance, fully static CMOS processor that combines a CPU, non-volatile program memory, RAM, and I/O peripherals on a single die. It belongs to the microcontroller family (microcontroller -> MCU -> embedded controller -> semiconductor device) and is typically used in cost-sensitive, high-volume embedded applications where firmware is finalized before production and field re-programmability is not required.
Key features of the PIC16C56-XTE/SS include 12 I/O pins, a programmable Watchdog Timer (WDT) for code-execution monitoring, a Power-On Reset (POR) circuit, and an internal RC oscillator option. The device executes 33 single-word, single-cycle RISC instructions, delivering roughly 4 MIPS at 4MHz with 2:1 code compression over competing 8-bit architectures. Code is stored in 12-bit-wide OTP EPROM.
The PIC16C56 uses a Harvard RISC architecture with a separate 12-bit instruction bus and 8-bit data bus, plus a two-stage pipeline that lets most instructions complete in one oscillator cycle. The 12-bit-wide opcodes are highly orthogonal and produce the well-known 2:1 code-compression advantage over other 8-bit MCUs in its class, reducing program-memory pressure on the 1K-word OTP array. CMOS fabrication ensures low static power consumption for always-on or battery-leak applications.
Typical applications for the PIC16C56-XTE/SS include simple consumer appliances, remote-control key fobs, sensor-interface modules, low-end toys, LED drivers, and small household devices that need deterministic real-time control without field firmware updates. The 4MHz clock is sufficient for slow control loops and human-interface timing.
When designing with the PIC16C56-XTE/SS, note that the OTP memory cannot be re-programmed in-circuit, so firmware must be verified on a windowed (JW) or equivalent emulator part before committing to production. Place a 0.1uF decoupling capacitor close to VDD, and respect the 3.0V-5.5V supply range to guarantee timing margins at 4MHz. Sleep mode lowers IPD to a few microamps for battery duty.
This page synthesizes distributor pricing, drop-in SSOP-20 alternatives, and practical design notes not found in the manufacturer datasheet alone.
Bộ thay thế dễ dàng lắp đặt cho PIC16C56-XTE/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 PIC16C56-XTE/SS (cùng hình factor và footprint) — khác nhau ở Package, Program Memory Size, Program Memory Type, Operating Temperature, Core Architecture.
PIC16C56T-XT/SS
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C56A-20I/SS
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C56A-20E/SS
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C56AT-20/SS
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C55-XTE/SS
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C56AT-20E/SS
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC16C56-XTE/SS Tỷ lệ tối đa & tính chất điện
| Product Family | PIC16C5X |
| Core Architecture | 8-bit PIC RISC |
| Program Memory Type | OTP EPROM |
| Program Memory Size | 1.5 KB (1K x 12) |
| RAM Size | 25 x 8 bytes |
| Tần số xung maksimum | 4 MHz |
| Instruction Set Size | 33 single-word instructions |
| Supply Voltage (VDD) | 3.0 V to 5.5 V |
| I/O Pins | 12 |
| Watchdog Timer (WDT) | Yes, programmable |
| Power-On Reset (POR) | Yes |
| Oscillator | Internal RC / external |
| Nhiệt độ hoạt động | -40C to +125C (industrial, X suffix) |
| Hộp | 20-pin SSOP |
| Kiểu lắp đặt | Surface Mount |
Cấu hình chân PIC16C56-XTE/SS
| Chân 1 | RA2 — Bidirectional I/O pin / T0CKI (timer0 clock input) |
| Chân 2 | RA3 — Bidirectional I/O pin |
| Chân 3 | RA4 — Bidirectional I/O pin |
| Chân 4 | MCLR — Master Clear (reset) input, active low |
| Chân 5 | VSS — Ground reference |
| Chân 6 | RB0 — Bidirectional I/O pin |
| Chân 7 | RB1 — Bidirectional I/O pin |
| Chân 8 | RB2 — Bidirectional I/O pin |
| Chân 9 | RB3 — Bidirectional I/O pin |
| Chân 10 | RB4 — Bidirectional I/O pin |
| Chân 11 | RB5 — Bidirectional I/O pin |
| Chân 12 | RB6 — Bidirectional I/O pin |
| Chân 13 | RB7 — Bidirectional I/O pin |
| Chân 14 | VDD — Positive supply voltage (+3.0V to +5.5V) |
| Chân 15 | OSC2 — Oscillator output / CLKOUT |
| Chân 16 | OSC1 — Oscillator input / CLKIN |
| Chân 17 | RA0 — Bidirectional I/O pin |
| Chân 18 | RA1 — Bidirectional I/O pin |
| Chân 19 | NC — Not connected (per datasheet package drawing) |
| Chân 20 | NC — Not connected (per datasheet package drawing) |
Ứng dụng tiêu biểu
PIC16C56-XTE/SS phù hợp cho 6 Áp dụngs: Consumer Appliance Control, Remote Control Key Fob, Sensor Interface Module, LED Lighting Controller, Toy and Hobby Electronics, Industrial Timer and Counter Module.
Consumer Appliance Control
The PIC16C56-XTE/SS is well suited to consumer appliance control boards (toasters, coffee makers, blenders, simple washing-machine user-interface boards) where the firmware is finalized at production and cost is the dominant constraint. Its 1K x 12 OTP program memory is sufficient for typical state-machine control of relays, triacs, and 7-segment displays, while 25 bytes of RAM holds a handful of counters and flags. The 12 I/O pins directly drive LED indicators, keypads, and zero-cross detector inputs. Per the PIC16C5X datasheet, the 33-instruction RISC set and 12-bit code width yield 2:1 code compression, so 1K of OTP goes further than competing 8-bit cores. The internal oscillator eliminates two external clock components.
Được đề xuất
Remote Control Key Fob
Battery-powered remote-control key fobs and simple RF transmitters leverage the PIC16C56-XTE/SS sleep-mode current of only a few microamps, easily achieving 1-2 years of life on a CR2032 coin cell. Per the Microchip PIC16C5X datasheet, the Watchdog Timer can wake the MCU every few milliseconds to scan buttons, transmit, and re-enter sleep, keeping average current under 50uA. The 4MHz internal oscillator is fast enough to bit-bang 433MHz ASK/OOK transmitters at typical 1-10 kbps data rates without external clock components. The OTP memory locks the manufacturer's pairing code at production, preventing unauthorized firmware cloning.
Được đề xuất
Sensor Interface Module
Simple sensor-interface modules such as thermistor readers, PIR motion detectors, and humidity-to-PWM converters use the PIC16C56-XTE/SS for low-cost analog-to-digital conversion via the on-chip comparator plus slope ADC technique. The 25-byte RAM is sufficient to hold ADC results, debounced switch states, and timing variables. Per DS30453D, the 12-bit instruction word supports up to 1K of OTP code - enough for linearization lookup tables, hysteresis logic, and UART or PWM output formatting. The 3.0V-5.5V supply range lets the MCU run directly from a 3.3V regulator or a 5V USB-derived rail.
Được đề xuất
LED Lighting Controller
Low-end LED lighting controllers (RGB strip drivers, decorative luminaires, aquarium lights) use the PIC16C56-XTE/SS to generate PWM dimming signals for MOSFET drivers and to read potentiometer or push-button inputs. The 12 I/O pins support up to 4 PWM channels plus a few status LEDs and a UART for optional DMX-style or proprietary dimming protocol. According to the PIC16C5X datasheet, the 4MHz clock combined with the 2:1 code compression is sufficient for 8-bit PWM at 1kHz with no perceptible flicker. OTP memory locks the dimming curve and color-temperature algorithm at production.
Được đề xuất
Toy and Hobby Electronics
Mass-market toys, hobby electronics kits, and educational microcontroller boards use the PIC16C56-XTE/SS for sub-$1 BOM cost combined with reliable deterministic control. Its 33 single-word instructions are easy to teach in classrooms, and the OTP memory locks the firmware against copy by competitors. According to Microchip PIC16C5X documentation, the device runs reliably across -40C to +125C, surviving outdoor hobby robotics and RC-vehicle environments. The 20-SSOP package is hand-solderable for kits and small batches, while tape-and-reel variants support high-volume SMT.
Được đề xuất
Industrial Timer and Counter Module
Industrial timers, event counters, and machine-cycle monitors use the PIC16C56-XTE/SS as a low-cost deterministic 8-bit controller. Per the PIC16C5X datasheet, the Watchdog Timer provides fail-safe recovery from firmware lock-ups in electrically noisy factory environments, and the -40C to +125C industrial temperature range handles unconditioned control cabinets. The 12-bit instruction width fits typical ladder-logic-equivalent sequences comfortably, while the 20-SSOP package drops onto standard 0.65mm-pitch industrial PCB footprints. EPROM-based OTP survives gamma-sterilization and high-temperature reflow better than flash alternatives.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC16C56-XTE/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 | PIC16C56T-XT/SS | PIC16C56A-20I/SS | PIC16C55-XTE/SS | PIC16C56AT-20/SS |
|---|---|---|---|---|---|
| Package | 20-SSOP | 20-SSOP - same | 20-SSOP - same | 20-SSOP - same | 20-SSOP - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory Type | OTP EPROM | OTP EPROM | OTP EPROM | OTP EPROM | OTP EPROM |
| Program Memory Size | 1K x 12 (1.5 KB) | 1K x 12 (1.5 KB) | 1K x 12 (1.5 KB) | 512 x 12 (768 B) | 1K x 12 (1.5 KB) |
| RAM Size | 25 bytes | 25 bytes | 25 bytes | 25 bytes | 25 bytes |
| Maximum Clock Frequency | 4 MHz | 4 MHz | 4 MHz | 4 MHz | 4 MHz |
| Supply Voltage | 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 |
| I/O Pins | 12 | 12 | 12 | 12 | 12 |
| Operating Temperature | -40C to +125C | -40C to +125C | -40C to +85C | -40C to +125C | 0C to +70C |
Bảo phân biệt quan trọng
- OTP EPROM memory for anti-cloning security (vsPIC16F54-I/SS)
- Smallest-cost MCU in PIC16C5X family (vsPIC16C58B-20I/SS)
- Industrial temperature range (vsPIC16C56AT-20/SS)
Ghi chú thiết kế
PIC16C56 OTP memory cannot be re-programmed in-circuit. Verify firmware on a JW windowed sample or on a PIC16F54/PIC16F57 equivalent flash part before committing to OTP production. A single bit error forces scrapping the chip. Per the PIC16C5X datasheet, the /MCLR pin must be held high through power-up with a 10k pull-up to VDD and a 0.1uF decoupling cap within 5mm of the VDD pin; floating MCLR or shared decoupling can cause random POR failures.
Estimated: VDD quiescent current at 4MHz, 5V is roughly 2-3mA active and 1-5uA in sleep, per PIC16C5X datasheet typical curves. Add a 0.1uF ceramic bypass cap within 5mm of VDD plus a bulk 10uF tantalum at the regulator output for switching-noise immunity. The internal RC oscillator tolerance is +/- 2% over voltage and temperature, which is acceptable for UART-free control loops but tight for UART bit timing without calibration.
Route the OSC1/OSC2 traces as short as possible and guard them with a ground ring if using an external crystal; capacitance above 15pF on either pin can shift the oscillator off-frequency. Keep the MCLR trace short and avoid routing high-current triac outputs near the oscillator pins. Per the PIC16C5X layout checklist, place the decoupling capacitor on the same side as the MCU with via-free ground pad to minimize inductance.
PIC16C56 in 20-SSOP has a thermal resistance theta_JA of approximately 90 C/W (per Microchip package thermal data). Estimated: at full 4MHz, 5V operation the active current is 2-3mA, dissipating 10-15mW. Junction rise is therefore negligible (<2C). In sleep mode, dissipation drops to under 25uW and self-heating is irrelevant.
Thông tin tuân thủ
RoHS/REACH/lead-free status not confirmed in provided Verified Web Data; marked [DATA_NEEDED] in specs. PIC16C5X OTP family generally available in lead-free finishes, but specific /SS variant not verified.
