PIC16C56-LPE/SO - 8-Bit 40MHz OTP MCU 1.5KB | Microchip
MPN: PIC16C56-LPE/SO ✓ Hoạt độngPIC16C56-LPE/SO Tóm tắt
An OTP microcontroller is a single-chip processor whose program memory is implemented as one-time-programmable EPROM. Engineers program the device once with a device programmer (such as the MPLAB PM3) and the bit pattern becomes permanent - there is no in-circuit re-programmability. Compared with flash-based MCUs, OTP parts offer a smaller silicon die, lower unit cost at moderate volumes, and superior long-term data retention, making them a strong fit for cost-sensitive, high-volume, fixed-code applications.
Key features include a 12-bit wide instruction set providing roughly 2:1 code compression over typical 8-bit CISC architectures, a Harvard bus with separate program and data paths, a watchdog timer, a 5-channel 8-bit ADC on related family members, and dual hardware comparators that double as simple analog front ends. Power-saving SLEEP mode, on-chip power-on reset, and brown-out protection simplify external circuitry. The extended-temperature grade allows deployment in industrial, automotive-cabin, and outdoor environments that exceed the 0-70C commercial range.
The PIC16C5X architecture delivers a 200 ns instruction cycle at the maximum 40 MHz oscillator (10 MHz instruction rate equivalent), enabling real-time control loops and modest protocol handling. Its 18-pin SOIC footprint is the industry-standard small-outline 300-mil package, compatible with hand-soldering, reflow, and automated pick-and-place lines.
Typical applications include appliance controllers, low-power remote sensor nodes, automotive cabin accessories, security keypads, HVAC damper actuators, white-goods user interfaces, and low-bandwidth industrial sensor signal conditioning where the program logic is fixed at production and unit cost dominates.
When designing with the PIC16C56-LPE/SO, plan your code size carefully - the 1K x 12 OTP provides 1024 instructions. Use a low-power 32.768 kHz crystal for battery-operated designs and configure the watchdog timer to recover from firmware lockups. Confirm OTP programming margins across operating temperature before committing to volume production.
This page synthesizes distributor pricing, same-package drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
Bộ thay thế dễ dàng lắp đặt cho PIC16C56-LPE/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 PIC16C56-LPE/SO (cùng hình factor và footprint) — khác nhau ở Package, Core Architecture, Program Memory Size, RoHS Status, Operating Temperature.
PIC16C56-LP/SO
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C56-LPI/SO
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C56T-LPE/SO
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC16C56A-04E/SO
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC16C56-HSI/SS
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C55-LPE/SO
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C56-LPE/SO Tỷ lệ tối đa & tính chất điện
| Core Architecture | 8-bit PIC RISC (PIC16C5X baseline) |
| Program Memory Type | OTP EPROM |
| Program Memory Size | 1.5 KB (1K x 12) |
| RAM | 25 bytes |
| Data EEPROM | None |
| Tần số xung maksimum | 40 MHz |
| Instruction Cycle | 200 ns (at 40 MHz) |
| I/O Pins | 12 |
| Hộp | 18-pin SOIC (300 mil) |
| Oscillator Type | LP (low-power, 32.768 kHz-200 kHz crystal/resonator) |
| Operating Voltage Range | 3.0 V to 6.0 V (typical 3.3 V / 5 V) |
| Khoảng nhiệt độ hoạt động | -40 C to +125 C (extended, 'E' suffix) |
| ADC | None on PIC16C56 (family options only) |
| Watchdog Timer | Yes |
| Power-on Reset / Brown-out | Yes |
| Kiểu lắp đặt | Surface Mount |
| Cấp MSL | 1 |
| Trạng thái RoHS | Non-Compliant (OTP EPROM windowed part historically Pb-bearing; check lot markings) |
Cấu hình chân PIC16C56-LPE/SO
| Chân 1 | RA2 — Port A bit 2 (bidirectional digital I/O) |
| Chân 2 | RA3 — Port A bit 3 (bidirectional digital I/O) |
| Chân 3 | RTCC — Real-Time Clock/Counter input (also RA4 on some family variants) |
| Chân 4 | MCLR — Master Clear reset input (active low) |
| Chân 5 | VSS — Ground reference |
| Chân 6 | RB0 — Port B bit 0 (bidirectional digital I/O) |
| Chân 7 | RB1 — Port B bit 1 (bidirectional digital I/O) |
| Chân 8 | RB2 — Port B bit 2 (bidirectional digital I/O) |
| Chân 9 | RB3 — Port B bit 3 (bidirectional digital I/O) |
| Chân 10 | RB4 — Port B bit 4 (bidirectional digital I/O) |
| Chân 11 | RB5 — Port B bit 5 (bidirectional digital I/O) |
| Chân 12 | RB6 — Port B bit 6 (bidirectional digital I/O) |
| Chân 13 | RB7 — Port B bit 7 (bidirectional digital I/O) |
| Chân 14 | VDD — Positive supply voltage (3.0 V to 6.0 V) |
| Chân 15 | OSC2 — Oscillator output (crystal/resonator connection) |
| Chân 16 | OSC1 — Oscillator input (crystal/resonator connection) |
| Chân 17 | RA0 — Port A bit 0 (bidirectional digital I/O) |
| Chân 18 | RA1 — Port A bit 1 (bidirectional digital I/O) |
Ứng dụng tiêu biểu
PIC16C56-LPE/SO phù hợp cho 7 Áp dụngs: Appliance Control Boards, Automotive Cabin Accessories, Low-Power Sensor Signal Conditioning, Security Keypads and Access Control, HVAC Damper and Valve Actuators, Industrial Sensor Signal Conditioning Modules, White-Goods User Interface Boards.
Appliance Control Boards
The PIC16C56-LPE/SO suits fixed-function appliance controllers (rice cookers, washing-machine sub-boards, microwave keypads) where the program is finalized at production and unit cost dominates. Its 1.5 KB OTP easily fits typical appliance state-machine logic, 12 I/O pins drive relays/LEDs/switches directly, and the LP oscillator plus SLEEP mode keep standby current low for energy-star designs. The -40C to +125C extended-temperature grade handles oven-cabinet and motor-compartment heat. Compared with a flash MCU, the OTP die is smaller, lowering per-unit BOM cost at high volume.
Được đề xuất
Automotive Cabin Accessories
The PIC16C56-LPE/SO operates across -40C to +125C, fitting non-powertrain cabin modules such as seat-heater switches, mirror controllers, sunroof logic, and ambient lighting drivers. Its 5V tolerance, hardware watchdog timer, and brown-out reset meet the electrical-noise demands of an automotive environment without external supervision ICs. The OTP memory is vibration-resistant (no in-circuit reprogramming surface) and the 12 I/O pins drive FET gates, PWM LEDs, and H-bridge enable lines directly. Designs targeting AEC-Q100 should evaluate the PIC16C56-LPE/SO qualification status with Microchip before PPAP submission.
Được đề xuất
Low-Power Sensor Signal Conditioning
Battery-powered remote sensor nodes benefit from the PIC16C56-LPE/SO's LP low-power oscillator (32.768 kHz-200 kHz crystal), SLEEP current in the microamp range, and polled execution model. Typical signal-conditioning flows (thermistor bridge readout, 4-20 mA loop sensing, pulse counting) fit easily within 1.5 KB OTP and 25 bytes RAM. The watchdog timer recovers from firmware lockups during extended battery operation. Pair with an external low-power op-amp for analog front-end scaling; the MCU itself has no integrated ADC on the PIC16C56 variant.
Được đề xuất
Security Keypads and Access Control
Fixed-code security keypads, alarm panels, and electronic lock controllers use the PIC16C56-LPE/SO's 1.5 KB OTP to store proprietary authentication logic that cannot be read back after programming - a deterrent against firmware cloning. The 12 I/O pins scan a 4x4 matrix keypad directly, drive buzzer and LED indicators, and interface to a magnetic-stripe or Wiegand reader. The extended temperature range supports outdoor access-control housings. The lack of in-circuit reprogramming prevents field tampering and unauthorized code updates.
Được đề xuất
HVAC Damper and Valve Actuators
Building-automation damper actuators and zone-valve controllers use the PIC16C56-LPE/SO's polled execution to drive TRIAC/optocoupler stages and read thermistor/position feedback. The LP oscillator keeps idle current minimal in always-on damper actuators mounted in ceilings, and the 5V rail is compatible with standard HVAC control boards. The extended -40C to +125C grade survives attic and rooftop temperature extremes. Real-time proportional control loops fit within the 1.5 KB instruction budget for typical 3-wire zone-valve or motorized-damper algorithms.
Được đề xuất
Industrial Sensor Signal Conditioning Modules
DIN-rail-mounted industrial sensor signal conditioners (RTD, thermocouple, load-cell amplifiers) deploy the PIC16C56-LPE/SO for cold-junction compensation, linearization, and 4-20 mA loop drive. Its 12 I/O pins interface to 24-bit sigma-delta ADCs over SPI bit-banging, drive HART modulator outputs, and read calibration EEPROM. The extended temperature and wide supply range (3.0-6.0 V) handle 24V-loop-powered designs with linear regulation. OTP storage locks the calibration coefficients, preventing field re-calibration that could compromise measurement integrity.
Được đề xuất
White-Goods User Interface Boards
User-interface boards in dishwashers, refrigerators, and washing machines deploy the PIC16C56-LPE/SO to scan capacitive-touch or membrane keypads, drive 7-segment displays, and communicate with the main appliance control board via UART. The 1.5 KB OTP stores display font tables, button-debounce state machines, and diagnostic routines. Extended temperature supports the steam/humidity environments near dishwashers and washer drums. Compared to higher-end MCUs, the PIC16C56's small die and 18-pin SOIC keep UI-board BOM cost minimal at appliance scale.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC16C56-LPE/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 | PIC16C56-LP/SO | PIC16C56-LPI/SO | PIC16C56T-LPE/SO | PIC16C56A-04E/SO | PIC16C56-HSI/SS | PIC16C55-LPE/SO |
|---|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 18-pin SOIC | 18-pin SOIC - same | 18-pin SOIC - same | 18-pin SOIC - same | 18-pin SOIC - same | 18-pin SSOP - same family, smaller body | 18-pin SOIC - same |
| Program Memory (OTP) | 1.5 KB (1K x 12) | 1.5 KB (1K x 12) - identical | 1.5 KB (1K x 12) - identical | 1.5 KB (1K x 12) - identical | 1.5 KB (1K x 12) - identical | 1.5 KB (1K x 12) - identical | 768 B (512 x 12) - 49% smaller |
| Maximum Clock Frequency | 40 MHz | 40 MHz - identical | 40 MHz - identical | 40 MHz - identical | 4 MHz (04 oscillator) | 40 MHz - identical | 40 MHz - identical |
| Operating Temperature Range | -40 C to +125 C (extended) | 0 C to +70 C (commercial) | -40 C to +85 C (industrial) | -40 C to +125 C - identical | -40 C to +125 C - identical | -40 C to +85 C (industrial) | -40 C to +125 C - identical |
| Oscillator Type | LP (low-power, 32.768 kHz-200 kHz) | LP - identical | LP - identical | LP - identical | XT (up to 4 MHz) - higher-power driver | HS (high-speed, 4-40 MHz) - higher-power driver | LP - identical |
| RAM | 25 bytes | 25 bytes - identical | 25 bytes - identical | 25 bytes - identical | 25 bytes - identical | 25 bytes - identical | 25 bytes - identical |
| I/O Pins | 12 | 12 - identical | 12 - identical | 12 - identical | 12 - identical | 12 - identical | 12 - identical |
| Packaging Form | Tube | Tube | Tube | Tape & Reel | Tube | Tube | Tube |
Bảo phân biệt quan trọng
- Extended-temperature grade with same die as commercial variant (vsPIC16C56-LP/SO)
- Low-power oscillator variant for battery and always-on designs (vsPIC16C56A-04E/SO (XT oscillator))
- Larger program memory than the PIC16C55 baseline (vsPIC16C55-LPE/SO)
- OT-curable silicon for IP protection (vsFlash-based PIC16F84A-I/SO (not in list, illustrative))
Ghi chú thiết kế
Place the LP crystal (typically 32.768 kHz or 100-200 kHz ceramic resonator) within 5 mm of pins 15 (OSC2) and 16 (OSC1) to minimize parasitic capacitance. Use short, symmetrical traces and a ground guard ring around the oscillator cell. Place the 0.1 uF VDD bypass capacitor within 3 mm of pin 14, and a 10 uF bulk capacitor at the board supply entry. Add a 10 kohm pull-up on MCLR (pin 4) to VDD for proper reset behavior.
The PIC16C56-LPE/SO accepts 3.0 V to 6.0 V on VDD (pin 14). For 5V designs, an MC78L05 or equivalent LDO is typical; for 3.3V-only designs, ensure the brown-out reset voltage threshold (~2.5 V typical) accommodates the slower VDD rise time. During SLEEP, the LP oscillator continues running while the CPU halts; estimated SLEEP current at 32.768 kHz is in the single-digit microamp range per the PIC16C5X datasheet - verify on your lot.
Estimated: OTP programming voltage is 13 V on the MCLR pin during device programming - never apply 13V to MCLR in-circuit or the device will be permanently damaged. Use a Microchip MPLAB PM3 or equivalent programmer with a proper socket adapter. Also note that the PIC16C5X family lacks interrupts - all timing is polled via the RTCC rollover or external edge on RA4, which can constrain tight real-time loops.
Route RB0-RB7 (pins 6-13) as a contiguous byte port to simplify matrix-keypad scanning code. Keep high-current switching signals (relay coils, TRIAC gates) on RA0-RA3 (pins 17-18, 1-2) physically separated from the oscillator pins. Add 100 ohm series resistors on any external signal traces longer than 50 mm to limit ringing on the bidirectional I/O pins.
Estimated: at the maximum 40 MHz clock and 6.0 V supply, the PIC16C56-LPE/SO core dissipation is approximately 10-15 mW (per PIC16C5X electrical characteristics) - well within the SOIC-18 theta_JA of ~85 C/W. No external heatsinking is required even at the +125C extended-temperature upper limit, but the surrounding board copper area should still provide at least 100 mm^2 of VDD pour for thermal spreading.
Thông tin tuân thủ
PIC16C5X OTP family is generally not RoHS compliant due to legacy die-attach and package lead finishes. Verify specific lot compliance via manufacturer C of C. AEC-Q100 not formally qualified - verify automotive cabin suitability with Microchip application engineering.