PIC16C55A-04I/P - 4MHz 8-Bit OTP MCU, 768B, 28-PDIP | Microchip
Артикул: PIC16C55A-04I/P ✓ Активен| Кол-во | Цена за ед. | Итого |
|---|---|---|
| 1 | $2.45 | $2,45 |
| 10 | $2.18 | $21,80 |
| 100 | $1.92 | $192,00 |
| 500 | $1.71 | $855,00 |
| 1.000 | $1.52 | $1.520,00 |
PIC16C55A-04I/P Обзор
An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, RAM, non-volatile program memory, and peripheral I/O on one die. In the component taxonomy, an MCU belongs to the broader class of microcontrollers -> embedded processors -> digital ICs -> semiconductors. The PIC16C5x family pioneered Microchip's RISC architecture for low-cost, high-volume embedded control, and it is the direct ancestor of today's PIC16 and PIC18 families.
Key features of the PIC16C55A-04I/P include 33 single-word single-cycle RISC instructions providing 2:1 code compression over CISC 8-bit MCUs of its era, a two-level deep hardware stack, an 8-bit real-time counter (TMR0) with an 8-bit programmable prescaler, direct/indirect/relative addressing, and seven or eight special function hardware registers. The OTP program memory allows one-time factory or field programming, making the part well suited to mature production runs where firmware is fixed.
Architecturally, the device uses a Harvard-style separated program/data bus, 12-bit instruction width, and CMOS process technology for low power. It runs from a single 3.0V to 6.25V supply (commercial/industrial variants) at up to 4 MHz, producing 1 MIPS throughput. The 8-bit data path with 12-bit opcodes yields compact code density that fits easily within the 512-word OTP space.
Typical applications include appliance controls, low-end consumer products, simple sensor interfaces, battery chargers, LED drivers, and industrial timers where a small, inexpensive, deterministic 8-bit core is preferred over a 16-/32-bit MCU. The industrial temperature grade extends deployment into factory and outdoor equipment.
When designing with this part, choose an external 4 MHz crystal or resonator for clock accuracy, drive MCLR with a proper reset circuit, and reserve RA0-RA3 digital I/O pins carefully because some packages multiplex analog functions onto them. The OTP memory cannot be erased, so use a PIC16F55 flash equivalent for prototyping.
Аналоги без доработки для PIC16C55A-04I/P — тот же корпус, pin-to-pin совместимость. Компоненты в других корпусах, требующие переработки PCB, исключены.
Варианты в этой серии
Модели той же серии, совместимые без доработки с PIC16C55A-04I/P (тот же форм-фактор и посадочное место) — отличается по Program Memory Size, Package, Timers, Watchdog Timer, Core.
Инструмент быстрого сравнения — выберите альтернативные компоненты для сравнения бок о бок:
PIC16C55A-04/P
✅ Прямая замена✓ В наличии
$2.18 / шт.
Открыть даташит →PIC16C55A-04E/P
✅ Прямая замена✓ В наличии
$3.15 / шт.
Открыть даташит →PIC16C55-10I/P
✅ Прямая замена✓ В наличии
$2.58 / шт.
Открыть даташит →PIC16C55A-04I/SO
✅ Прямая замена✓ В наличии
$2.05 / шт.
Открыть даташит →PIC16C55A-04I/P Максимальные параметры и электрические характеристики
| Core | PIC16C5x 8-bit RISC |
| Разрядность шины данных | 8-bit |
| Instruction Width | 12-bit |
| Max Clock Frequency | 4 MHz |
| Program Memory Size | 768 B (512 x 12 OTP) |
| Program Memory Type | OTP (One-Time Programmable) |
| RAM Size | 24 B |
| Number of I/O Pins | 20 |
| Timers | 1 x 8-bit (TMR0) with prescaler |
| Stack Depth | 2 levels (hardware) |
| Supply Voltage (Vdd) | 3.0 V to 6.25 V |
| Рабочая температура | -40 C to +85 C (Industrial) |
| Корпус / Типоразмер | 28-DIP (0.600 in / 15.24 mm) |
| Тип монтажа | Through-Hole |
| Статус RoHS | Compliant |
Конфигурация выводов PIC16C55A-04I/P
| Контакт 1 | RA2 — Bidirectional I/O port A bit 2 |
| Контакт 2 | RA3 — Bidirectional I/O port A bit 3 |
| Контакт 3 | RA4/T0CKI — Bidirectional I/O port A bit 4 / TMR0 clock input |
| Контакт 4 | MCLR/Vpp — Master Clear reset input / programming voltage |
| Контакт 5 | Vss — Ground reference |
| Контакт 6 | OSC1/CLKIN — Crystal oscillator input / external clock input |
| Контакт 7 | OSC2/CLKOUT — Crystal oscillator output / clock output |
| Контакт 8 | RB0 — Bidirectional I/O port B bit 0 |
| Контакт 9 | RB1 — Bidirectional I/O port B bit 1 |
| Контакт 10 | RB2 — Bidirectional I/O port B bit 2 |
| Контакт 11 | RB3 — Bidirectional I/O port B bit 3 |
| Контакт 12 | RB4 — Bidirectional I/O port B bit 4 |
| Контакт 13 | RB5 — Bidirectional I/O port B bit 5 |
| Контакт 14 | RB6 — Bidirectional I/O port B bit 6 |
| Контакт 15 | RB7 — Bidirectional I/O port B bit 7 |
| Контакт 16 | RC0 — Bidirectional I/O port C bit 0 |
| Контакт 17 | RC1 — Bidirectional I/O port C bit 1 |
| Контакт 18 | RC2 — Bidirectional I/O port C bit 2 |
| Контакт 19 | RC3 — Bidirectional I/O port C bit 3 |
| Контакт 20 | RC4 — Bidirectional I/O port C bit 4 |
| Контакт 21 | RC5 — Bidirectional I/O port C bit 5 |
| Контакт 22 | RC6 — Bidirectional I/O port C bit 6 |
| Контакт 23 | RC7 — Bidirectional I/O port C bit 7 |
| Контакт 24 | RD0 — Bidirectional I/O port D bit 0 |
| Контакт 25 | RD1 — Bidirectional I/O port D bit 1 |
| Контакт 26 | RD2 — Bidirectional I/O port D bit 2 |
| Контакт 27 | RD3 — Bidirectional I/O port D bit 3 |
| Контакт 28 | Vdd — Positive supply voltage |
Типичное применение
PIC16C55A-04I/P подходит для 6 применениеs: Appliance Control Board, Battery Charger Control, Industrial Timer / Sequencer, LED Lighting Controller, Simple Sensor Interface Module, Consumer Remote Control.
Appliance Control Board
The PIC16C55A-04I/P suits low-cost appliance controllers such as microwave oven keypads, washing-machine cycle timers, and coffee-maker user interfaces. Its 4 MHz RISC core delivers deterministic 1 MIPS throughput, allowing real-time control of relays, triacs, and seven-segment LED or LCD displays without an RTOS. The 768-byte OTP program memory fits typical appliance firmware (state machines, button debouncing, buzzer patterns) while keeping unit cost under $2.50. Industrial -40C to +85C temperature grade supports refrigerator and dishwasher compartments. MCLR, TMR0, and 20 I/O pins enable direct drive of matrix keypads and indicator LEDs with minimal external logic, reducing BOM cost and PCB area.
Рекомендуется
Battery Charger Control
The PIC16C55A-04I/P is well-matched to lead-acid or NiMH charger controllers in the 1A-5A range. TMR0 with programmable prescaler provides accurate charge-time and -dT/dt termination timing, while the 20 I/O pins drive MOSFET gate drivers, status LEDs, and temperature-sensor inputs. The 3.0V-6.25V supply range allows direct connection to a 6V or 12V battery rail through a small linear regulator. OTP program memory locks the charging algorithm at production time, preventing field firmware drift in safety-critical applications. Low power consumption and the industrial temperature range support unattended battery-backed installations and outdoor solar charger enclosures.
Рекомендуется
Industrial Timer / Sequencer
Factory-floor timer and sequencer modules benefit from the PIC16C55A-04I/P's deterministic 8-bit core and rugged PDIP package. The device can scan 4x4 matrix keypads, drive 7-segment displays via discrete transistors, and sequence up to eight relay outputs through optical isolation. The -40C to +85C industrial temperature grade handles unheated cabinets and outdoor enclosures. OTP memory is ideal for fixed-cycle production equipment where firmware is finalized and never updated. PIC16C5x instruction-set compatibility means hundreds of legacy timer/sequencer designs can be re-implemented without retraining.
Рекомендуется
LED Lighting Controller
Decorative and architectural LED controllers use the PIC16C55A-04I/P to generate PWM dimming, chase patterns, and color-mixing sequences across RGB LED strings. The 8-bit TMR0 with prescaler creates accurate PWM frequencies above 100 Hz to avoid visible flicker, and 20 I/O pins multiplex dozens of LED channels through constant-current drivers like the WS2801 or TLC5940. OTP memory locks lighting patterns at production - perfect for fixed-scene installations in retail, signage, and stage lighting. Low cost and industrial temperature range suit 24/7 commercial installations.
Рекомендуется
Simple Sensor Interface Module
Sensor-interface modules for HVAC, environmental monitoring, and industrial gauges use the PIC16C55A-04I/P to read analog signals via external ADC, apply linearization or thresholding, and drive 4-20 mA or RS-232 outputs. The small 24-byte RAM and 768-byte OTP are sufficient for lookup-table calibration of thermistor, RTD, or load-cell signals. Wide supply range (3.0-6.25V) supports both 3.3V and 5V sensor buses, and the industrial temperature grade covers outdoor installations. OTP prevents accidental field modification that could shift calibrated outputs.
Рекомендуется
Consumer Remote Control
Universal remote controls, garage-door openers, and toy controllers use the PIC16C55A-04I/P for low-cost IR or RF transmission with matrix-scanned keypads. TMR0 generates accurate carrier frequencies (38 kHz IR, 315/433 MHz RF) and protocol bit-timings, while the 20 I/O pins directly drive keypad rows/columns and transmitter-enable lines. OTP memory locks the protocol decoder at production, preventing user modification. The 4 MHz clock is sufficient for all common IR (RC5, NEC, SIRC) and simple RF encoders without jitter issues, and the PDIP package simplifies hand-soldering during small-batch production.
Рекомендуется
Сводка рекомендуемых товаров
Справочные инженерные данные для PIC16C55A-04I/P — сравнение, рекомендации по проектированию и информация о соответствии.
Руководство по выбору
Сравнение с аналогами
| Параметр | Этот товар | PIC16C55A-04/P | PIC16C55A-04E/P | PIC16C55-10I/P |
|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-PDIP | 28-PDIP - same | 28-PDIP - same | 28-PDIP - same |
| Max Clock Frequency | 4 MHz | 4 MHz | 4 MHz | 10 MHz |
| Program Memory | 768 B OTP | 768 B OTP | 768 B OTP | 768 B OTP |
| RAM | 24 B | 24 B | 24 B | 24 B |
| Operating Temperature | -40C to +85C (Industrial) | 0C to +70C (Commercial) | -40C to +125C (Extended) | -40C to +85C (Industrial) |
| Instruction Set | 33 RISC instructions, 12-bit wide | 33 RISC instructions, 12-bit wide | 33 RISC instructions, 12-bit wide | 33 RISC instructions, 12-bit wide |
| Number of I/O Pins | 20 | 20 | 20 | 20 |
Ключевые отличия
- Industrial temperature grade for harsh environments (против PIC16C55A-04/P)
- Maximum community familiarity and tooling support (против PIC16C54A-04I/P)
- Cost-optimized OTP for high-volume mature products (против PIC16F55-I/P)
Заметки по проектированию
The PIC16C55A-04I/P uses OTP (One-Time Programmable) memory that cannot be erased. Always prototype with a flash-based equivalent such as PIC16F57 or PIC16F59, then port the validated HEX file to the OTP part for production. Per Microchip datasheet DS30400D, blank OTP devices read as 0xFFF, so unprogrammed code space will execute NOP-equivalent instructions - always fill unused program memory with NOPs or jump-to-reset patterns to ensure safe recovery from any code path glitch.
Estimated: At Vdd = 5.0 V and a 4 MHz oscillator, the PIC16C55A-04I/P draws approximately 2 mA active and <1 uA in sleep mode. Provide a 100 nF decoupling capacitor within 5 mm of Vdd (pin 28) and a 10 uF bulk capacitor near the IC for noisy industrial environments. The MCLR/Vpp pin (pin 4) requires a 10 kohm pull-up to Vdd and a 100 nF capacitor to ground for proper reset - omitting this is the most common boot failure source on PIC16C5x designs.
Route the 4 MHz crystal traces (OSC1 pin 6, OSC2 pin 7) symmetrically and keep them short (<10 mm) and away from switching nodes. Add a grounded guard ring around the crystal to reduce EMI pickup. The 28-PDIP through-hole footprint allows easy hand-soldering and rework, but for high-vibration industrial environments consider the SOIC-28 (PIC16C55A-04I/SO) or SSOP-28 (PIC16C55A-04I/SS) surface-mount alternatives for better mechanical reliability.
Информация о соответствии
RoHS and REACH compliant per Microchip product page. Lead-free (Pb-free) PDIP package. Industrial temperature grade -40C to +85C. Not AEC-Q100 qualified; for automotive applications consult Microchip's PIC16F automotive family.
