PIC16C73B-04I/SO - 8-Bit OTP MCU, 7KB, 22 I/O, 28-SOIC | Microchip
Артикул: PIC16C73B-04I/SO ✓ Активен| Кол-во | Цена за ед. | Итого |
|---|---|---|
| 1 | $10.79 | $10,79 |
| 10 | $9.85 | $98,50 |
| 100 | $8.92 | $892,00 |
| 500 | $7.95 | $3.975,00 |
| 1.000 | $7.1 | $7.100,00 |
PIC16C73B-04I/SO Обзор
An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, program memory, data memory, and peripherals on one die. The PIC16C73B belongs to Microchip's PIC16 mid-range family, which sits hierarchically under the PIC16 family, then the broader PIC architecture, then Microcontrollers, then Microprocessors & Controllers, then Semiconductors. OTP (One-Time Programmable) memory is mask-ROM-like flash that can be written only once with a device programmer - cheaper than flash but not re-programmable in-circuit, suiting cost-optimized production volumes.
Key features of the PIC16C73B include a 5-channel 8-bit Analog-to-Digital Converter (ADC), two 8-bit timers (Timer0 and Timer2) plus one 16-bit timer (Timer1), two Capture/Compare/PWM (CCP) modules, a synchronous Serial Peripheral Interface (SPI) or Inter-Integrated Circuit (I2C) port, and a Universal Asynchronous Receiver Transmitter (USART) for serial communication. The 28-SOIC package provides 22 I/O lines plus dedicated VDD/VSS/OSC/RESET pins, supporting through-hole replacement and surface-mount reflow at industrial volumes.
The PIC16C73B uses a 14-bit instruction word and a 4-clock-per-instruction cycle, yielding 5 MIPS at 20 MHz. OTP memory is cheaper than flash and is targeted at high-volume consumer and industrial products where firmware is finalized before production. The Harvard bus architecture separates program and data memory, enabling deterministic instruction fetch and simplifying pipeline operation.
Typical applications include consumer appliance controllers, industrial sensor interfaces, automotive body electronics, low-speed data acquisition systems, and embedded control boards. Designers should note that OTP parts cannot be re-programmed in-circuit and require a device programmer for firmware loading. The 28-SOIC footprint allows hand-soldering on prototype boards and standard reflow on production lines, and the SOIC-28 pinout is widely supported across the PIC16C7xx family for easy migration.
Аналоги без доработки для PIC16C73B-04I/SO — 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 PIC16C73B-04I/SO (тот же форм-фактор и посадочное место) — отличается по Package, Timers, Core Architecture, Operating Temperature, ADC.
Инструмент быстрого сравнения — выберите альтернативные компоненты для сравнения бок о бок:
PIC16C73B-04/SO
✅ Прямая замена✓ В наличии
$4.65 / шт.
Открыть даташит →PIC16C73B-20I/SO
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
PIC16C73B-04E/SO
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
PIC16F73-I/SO
✅ Прямая замена✓ В наличии
$2.45 / шт.
Открыть даташит →PIC16F873A-I/SO
✅ Прямая замена✓ В наличии
$2.65 / шт.
Открыть даташит →PIC16C73AT-20I/SO
✅ Прямая замена✓ В наличии
$5.75 / шт.
Открыть даташит →PIC16C73B-04I/SO Максимальные параметры и электрические характеристики
| Core Architecture | PIC16 (8-bit Harvard RISC) |
| Program Memory Type | OTP (One-Time Programmable) |
| Program Memory Size | 7 KB (4K x 14 words) |
| RAM Size | 192 bytes |
| Максимальная тактовая частота | 4 MHz |
| Instruction Cycle Time | 200 ns |
| Instruction Set Size | 35 single-word instructions |
| I/O Pins | 22 |
| ADC | 5 channels, 8-bit resolution |
| Timers | 1 x 8-bit (Timer0), 1 x 16-bit (Timer1), 1 x 8-bit (Timer2) |
| CCP Modules | 2 (Capture/Compare/PWM) |
| Serial Interfaces | SPI/I2C (SSP) + USART (SCI) |
| Напряжение питания | 4.0 V to 5.5 V |
| Рабочая температура | -40C to +85C (industrial) |
| Корпус | 28-pin SOIC (SO, 0.300 inch body) |
| Тип монтажа | Surface Mount |
| Статус RoHS | non_compliant (windowed/cerdip SKUs exist in family) |
Конфигурация выводов PIC16C73B-04I/SO
| Контакт 1 | MCLR/VPP — Master Clear (Reset) input or programming voltage |
| Контакт 2 | RA0/AN0 — PORTA bit 0 / Analog input 0 |
| Контакт 3 | RA1/AN1 — PORTA bit 1 / Analog input 1 |
| Контакт 4 | RA2/AN2 — PORTA bit 2 / Analog input 2 |
| Контакт 5 | RA3/AN3/VREF — PORTA bit 3 / Analog input 3 / Voltage reference |
| Контакт 6 | RA4/T0CKI — PORTA bit 4 / Timer0 clock input |
| Контакт 7 | RA5/AN4/SS — PORTA bit 5 / Analog input 4 / SPI slave select |
| Контакт 8 | VSS — Ground reference |
| Контакт 9 | OSC1/CLKIN — Oscillator crystal input / external clock input |
| Контакт 10 | OSC2/CLKOUT — Oscillator crystal output / clock output |
| Контакт 11 | RC0/T1OSO/T1CKI — PORTC bit 0 / Timer1 oscillator output / Timer1 clock input |
| Контакт 12 | RC1/T1OSI/CCP2 — PORTC bit 1 / Timer1 oscillator input / CCP2 |
| Контакт 13 | RC2/CCP1 — PORTC bit 2 / CCP1 output |
| Контакт 14 | RC3/SCK/SCL — PORTC bit 3 / SPI clock / I2C clock |
| Контакт 15 | RC4/SDI/SDA — PORTC bit 4 / SPI data in / I2C data |
| Контакт 16 | RC5/SDO — PORTC bit 5 / SPI data out |
| Контакт 17 | RC6/TX/CK — PORTC bit 6 / USART transmit / clock |
| Контакт 18 | RC7/RX/DT — PORTC bit 7 / USART receive / data |
| Контакт 19 | VSS — Ground reference |
| Контакт 20 | VDD — Positive supply voltage |
| Контакт 21 | RB0/INT — PORTB bit 0 / external interrupt |
| Контакт 22 | RB1 — PORTB bit 1 |
| Контакт 23 | RB2 — PORTB bit 2 |
| Контакт 24 | RB3 — PORTB bit 3 |
| Контакт 25 | RB4 — PORTB bit 4 |
| Контакт 26 | RB5 — PORTB bit 5 |
| Контакт 27 | RB6/PGC — PORTB bit 6 / ICSP clock |
| Контакт 28 | RB7/PGD — PORTB bit 7 / ICSP data |
Типичное применение
PIC16C73B-04I/SO подходит для 7 применениеs: Consumer Appliance Controllers, Industrial Sensor Interface Modules, Low-Speed Data Acquisition Systems, Embedded Control Boards, HVAC Thermostat Controllers, Educational and Hobbyist Development Boards, Security System Keypads and Panels.
Consumer Appliance Controllers
The PIC16C73B-04I/SO fits consumer appliance controllers because its 7 KB OTP memory holds pre-finalized firmware for washing machines, microwave ovens, and air-conditioner control boards. The 22 I/O lines drive relay banks, LED indicators, button matrices, and seven-segment displays without external bus expanders. The 4 MHz clock is adequate for keypad scanning, sensor sampling, and PWM motor control via the two CCP modules. The 28-SOIC package supports standard SMT reflow on appliance control PCBs. Compared with flash MCUs, the OTP cost advantage compounds at high volumes once firmware is locked. Industrial -40C to +85C operation tolerates garage or laundry-room environments.
Рекомендуется
Industrial Sensor Interface Modules
The PIC16C73B-04I/SO suits industrial sensor interface modules requiring multi-channel analog input conditioning. Its 5-channel 8-bit ADC samples thermocouples, pressure transducers, and 4-20 mA loop signals directly without an external ADC. The 192-byte RAM buffers averaged readings, while the USART transmits processed data to a host PLC. The SSP port supports SPI for digital sensor chains. Industrial -40C to +85C operation handles factory-floor thermal swings. OTP memory locks calibration coefficients into firmware at production programming, preventing field tampering.
Рекомендуется
Low-Speed Data Acquisition Systems
The PIC16C73B-04I/SO works for low-speed data acquisition systems sampling at sub-1 kHz per channel, where the 4 MHz clock and 8-bit ADC resolution suffice. Its 5 ADC channels plus 22 digital I/Os capture mixed analog and digital sensor data. The 192-byte RAM stores scan-line buffers, while the USART streams packets to a host computer. Two CCP modules generate timing triggers for synchronized sampling. The 28-SOIC footprint mounts into compact DAQ enclosures. OTP memory secures the proprietary calibration algorithm into the firmware.
Рекомендуется
Embedded Control Boards
The PIC16C73B-04I/SO is well suited for embedded control boards in industrial equipment and OEM subsystems. Its 22 I/O pins drive MOSFET gate drivers, opto-isolated inputs, and HMI keypads. The two CCP modules generate PWM signals for valve control or LED dimming. SPI/I2C interfaces connect to external EEPROM for parameter storage. The 4 MHz clock and 1 MIPS throughput handle straightforward state-machine control loops. Industrial temperature rating ensures reliability in cabinet-mounted installations.
Рекомендуется
HVAC Thermostat Controllers
The PIC16C73B-04I/SO fits HVAC thermostat controllers needing temperature sensing, relay switching, and keypad/display interface. The 5-channel ADC reads thermistor or solid-state temperature sensors, while the two CCP modules drive PWM outputs for proportional heating/cooling valve control. The USART connects to a wall-mounted display board or remote sensor. OTP memory locks vendor-specific calibration tables. The 28-SOIC package fits inside compact thermostat housings with standard SMT assembly. Industrial temperature rating handles attic and outdoor cabinet installations.
Рекомендуется
Educational and Hobbyist Development Boards
The PIC16C73B-04I/SO serves educational microcontroller courses and hobbyist projects because of its accessible 28-SOIC through-hole-compatible SPDIP sibling in the same family. Students learn RISC architecture, ADC programming, and serial communication protocols using the 35-instruction set. The 22 I/O pins provide ample experimentation surface for LED arrays, motor control, and sensor integration. OTP memory enforces the production-programming mindset in advanced labs. Industrial temperature tolerance allows rugged lab and field use.
Рекомендуется
Security System Keypads and Panels
The PIC16C73B-04I/SO works in security system keypads and alarm panels where the 22 I/O pins scan 4x4 button matrices and drive status LEDs without external logic. The 4 MHz clock provides debounce-free keypad scanning. OTP memory locks the security access codes and panel configuration into firmware at production. The USART interfaces with a central alarm panel or modem. The industrial temperature range ensures reliability in unheated garages and outdoor enclosures. The 28-SOIC package enables compact SMT design in modern panel housings.
Рекомендуется
Сводка рекомендуемых товаров
Справочные инженерные данные для PIC16C73B-04I/SO — сравнение, рекомендации по проектированию и информация о соответствии.
Руководство по выбору
Сравнение с аналогами
| Параметр | Этот товар | PIC16C73B-04/SO | PIC16C73B-20I/SO | PIC16F73-I/SO | PIC16F873A-I/SO | PIC16C73AT-20I/SO |
|---|---|---|---|---|---|---|
| Package | 28-SOIC | 28-SOIC - same | 28-SOIC - same | 28-SOIC - same | 28-SOIC - same | 28-SOIC - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Memory Type | OTP | OTP | OTP | Flash | Flash | OTP |
| Program Memory | 7 KB | 7 KB | 7 KB | 7 KB | 7 KB | 7 KB |
| RAM | 192 bytes | 192 bytes | 192 bytes | 192 bytes | 192 bytes | 192 bytes |
| Max Clock Frequency | 4 MHz | 4 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz |
| Operating Temperature | -40C to +85C (industrial) | 0C to +70C (commercial) | -40C to +85C (industrial) | -40C to +85C (industrial) | -40C to +85C (industrial) | -40C to +85C (industrial) |
| In-Circuit Reprogramming | No (OTP) | No (OTP) | No (OTP) | Yes (Flash + ICSP) | Yes (Flash + ICSP) | No (OTP) |
Ключевые отличия
- Lower cost OTP memory for high-volume production (против PIC16F73-I/SO)
- Industrial -40C to +85C operating range vs commercial (против PIC16C73B-04/SO)
- 4 MHz clock for low-power or noise-sensitive applications (против PIC16C73B-20I/SO)
Заметки по проектированию
The PIC16C73B-04I/SO requires a stable 5.0V supply (4.0-5.5V range) with proper decoupling. Place a 100 nF ceramic capacitor directly between VDD (pins 7 and 28) and VSS (pins 8 and 19) with traces shorter than 5 mm. For applications with noisy relay or motor switching, add a bulk 10 uF tantalum or electrolytic capacitor on the main 5V rail. The device draws approximately 2-15 mA active depending on clock and peripheral configuration.
Keep the oscillator traces between OSC1 (pin 9) and OSC2 (pin 10) short and surrounded by a ground guard ring to minimize EMI coupling. Use a crystal with the load capacitance specified in the datasheet (typically 15-33 pF) and place load capacitors as close as possible to the oscillator pins. For high-EMI environments, consider a 4-layer PCB with a dedicated ground plane beneath the MCU to improve noise immunity.
The OTP memory cannot be re-programmed in-circuit - verify firmware thoroughly using a windowed CERDIP sample or PIC16F73 flash equivalent before committing to OTP production programming. The MCLR pin (pin 1) requires a 10 kohm pull-up to VDD and should not be left floating. The ADC requires the A/D acquisition time delay before conversion; refer to the datasheet section for the correct Tad setting. Do not exceed the 5.5V absolute maximum on any pin.
Информация о соответствии
SOIC variant is non-RoHS due to lead-bearing terminators; not AEC-Q100 qualified for automotive. RoHS-compliant flash equivalent is PIC16F73-I/SO. REACH and halogen status not explicitly stated in available data.
