PIC16F74-E/PT - 20MHz 8-Bit Flash MCU | Microchip
MPN: PIC16F74-E/PT ✓ AktifPIC16F74-E/PT Genel Bakış
An 8-bit flash microcontroller is a compact embedded-control IC that combines a processor core, nonvolatile program memory, volatile data memory, and programmable peripherals on one semiconductor device. PIC16F74 belongs to the PIC16 microcontroller family within the broader embedded-controller and semiconductor hierarchy. This combination allows a board to execute control firmware while reading sensors, operating timers, driving digital outputs, and communicating with external circuits without a separate external program-memory device.
Key features include an 8-channel, 8-bit analog-to-digital converter, two additional timers, two capture/compare/PWM functions, 192 bytes of RAM, and a 33-pin I/O arrangement. The synchronous serial port can operate as a three-wire SPI interface or a two-wire I²C interface, while the USART supports asynchronous serial communication. These peripherals allow the PIC16F74-E/PT to consolidate several common embedded functions into a single controller.
The device uses a Harvard-style embedded architecture with separate program and data memories, and its 4K x 14-word flash organization provides 7 KB of on-chip program storage. The 20 MHz operating speed provides the timing headroom needed for control loops, serial protocols, and general-purpose embedded tasks. Because the MCU integrates flash memory, firmware is retained without an external EEPROM, while the 192-byte RAM supports variables, stack operations, and intermediate calculations.
Typical applications include industrial control panels, instrumentation, motor and actuator control, temperature monitoring, sensor acquisition, and compact serial-interface equipment. Its 8-bit ADC is useful for reading analog sensors, while its timers and PWM functions support periodic control, dimming, or motor-drive functions. SPI or I²C can connect the MCU to sensors, displays, transceivers, or other digital peripherals, and the USART provides a straightforward interface for configuration and diagnostics.
Designers should pay close attention to the 2.5 V to 5.5 V operating range and the voltage levels attached to its I/O pins. Decoupling, oscillator layout, programming access, and exposed-pad or thermal-management requirements should follow the manufacturer datasheet. This page synthesizes the verified manufacturer and distributor data, package information, commercial availability, and engineering guidance to support component selection and procurement.
Drop-in alternatifler için PIC16F74-E/PT — aynı paket, pin-başına uyumlu. PCB yeniden montajı gerektiren farklı paket bileşenleri dışlanmıştır.
Bu Serideki Variantlar
Yedek parça uyumlu olan aynı serideki modeller PIC16F74-E/PT (aynı form faktörü ve ayağa oturma) — farklı olan Package, ADC, Mounting Type, Timers, Operating Temperature Range.
PIC16F74-I/PT
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Veri Şablonunu Görüntüle →PIC16F74T-E/PT
✅ YerleştirmeFiyat için iletişime geçin
Veri Şablonunu Görüntüle →PIC16F74T-I/PT
✅ YerleştirmeFiyat için iletişime geçin
Veri Şablonunu Görüntüle →PIC16F74-E/P
✅ YerleştirmeFiyat için iletişime geçin
Veri Şablonunu Görüntüle →PIC16F74-E/PT Maksimum Değerlendirmeler & Elektriksel Özellikler
| Product Type | 8-bit CMOS flash microcontroller |
| Maximum Clock Speed | 20 MHz |
| Program Memory | 7 KB (4K x 14 words) |
| Data Memory | 192 bytes RAM |
| Number of I/O Pins | 33 pins |
| Supply Voltage Range | 2.5 V to 5.5 V |
| ADC Resolution | 8 bits |
| ADC Channels | 8 channels |
| Additional Timers | 2 timers |
| Capture/Compare/PWM Functions | 2 functions |
| Synchronous Serial Interfaces | 3-wire SPI or 2-wire I²C |
| Asynchronous Serial Interface | USART |
| Paket | 44-pin TQFP, 0.50 mm pitch |
| Package Dimensions | 5 mm x 5 mm |
| Lead-Free Status | Lead-free |
| Yaşam Döngüsü Durumu | Active |
PIC16F74-E/PT 5 mm x 5 mm Pin Yapısı Kılavuzu
PIC16F74-E/PT (5 mm x 5 mm paket) için pin yapısı. Bu dijital IC, GPIO, iletişim arayüzleri (UART, SPI, I2C) ve güç pinleri içerir. Alternatif pin işlevleri ve yapılandırma seçenekleri için üretici veri kitapçığını referans alın. Tünel sistem tasarımı ve PCB yerleşimi için temel bir bileşendir.
Ayrıntılı pin çıkış verisi mevcut değil: PIC16F74-E/PT.
Aşağıdaki veri sayfası tam pin konfigürasyonu için.
Tipik Uygulamalar
PIC16F74-E/PT için uygundur 6 uygulamas: Industrial Sensor Acquisition, Motor and Actuator Control, Temperature Monitoring, Serial Interface Gateway, LED Lighting Control, Compact Instrumentation Panel.
Industrial Sensor Acquisition
PIC16F74-E/PT is well suited to compact industrial sensor-acquisition modules because it combines eight 8-bit ADC channels with 33 I/O pins in a 44-pin TQFP package. The 20 MHz clock provides sufficient execution speed for sampling, filtering, threshold evaluation, and data handling, while 192 bytes of RAM supports working variables and short buffers. A designer can connect analog sensors to the ADC inputs and use SPI or I²C for digital sensors or remote sensing nodes. The USART can provide a straightforward commissioning or diagnostics link. Because the verified supply range is 2.5 V to 5.5 V, interface levels must remain compatible with the selected rail. The -E suffix is relevant where extended-temperature operation is required, subject to confirmation of the exact limits in the manufacturer datasheet.
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Motor and Actuator Control
PIC16F74-E/PT can implement motor, valve, and actuator-control logic where deterministic timing and multiple I/O lines are needed. Its 20 MHz operating speed supports firmware-based sequencing, while two additional timers and two capture/compare/PWM functions help generate timing references, measure events, or drive pulse-width-modulated outputs. The 33 available I/O pins provide connectivity for position sensors, switch inputs, driver-enable signals, and status indicators. In a typical implementation, the MCU reads command or sensor information, updates the actuator outputs, and reports state over SPI, I²C, or USART. Actual motor-drive circuitry must include suitable driver stages and protection, and timing should be checked against the system’s worst-case interrupt latency and operating temperature.
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Temperature Monitoring
PIC16F74-E/PT can serve as the control and communications hub in a temperature-monitoring instrument. The eight-channel 8-bit ADC can acquire signals from analog probes or conditioned sensor outputs, while the 20 MHz processor supports sampling schedules, conversion routines, local threshold checks, and alarm logic. SPI or I²C permits connection to a digital temperature sensor or external converter, and the USART supports display, host, or data-logger communication. With 192 bytes of RAM and 33 I/O pins, the device can coordinate switches, indicators, and status outputs without requiring a separate communications processor. Analog accuracy depends on the reference and conditioning circuitry, so those sections must be evaluated separately from the MCU specifications.
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Serial Interface Gateway
PIC16F74-E/PT is appropriate for a small serial-interface gateway because its synchronous serial port can be configured as three-wire SPI or two-wire I²C and its USART provides asynchronous communication. The 33 I/O pins can support multiple discrete inputs, status LEDs, handshake signals, or peripheral chip selects, while the 20 MHz clock and 7 KB of flash memory accommodate protocol conversion and framing logic. A practical design might read a sensor over I²C, configure an external transceiver through SPI, and forward status information through the USART. The 2.5 V to 5.5 V operating range offers flexibility for embedded systems, but every attached device must share compatible logic levels. Software should include timeout, checksum, and bus-error handling because the MCU does not remove the need for robust protocol management.
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LED Lighting Control
PIC16F74-E/PT can control addressable or multi-channel LED systems using its timers, PWM-capable capture/compare functions, and extensive I/O availability. Its 20 MHz clock is suitable for updating timing sequences, and the 7 KB program flash can hold control tables and communication handlers. The MCU may receive lighting commands through SPI, I²C, or the USART, then distribute those commands across LED driver channels. Eight ADC channels can also support ambient-light or temperature feedback for automatic adjustment. The controller is suitable for compact modules where a 44-pin TQFP footprint is acceptable. External LED-driver topology, current limits, switching transients, and grounding must be designed separately, and the final firmware should account for update intervals that remain stable at the maximum clock frequency and temperature.
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Compact Instrumentation Panel
PIC16F74-E/PT can act as the central controller in a compact instrumentation panel that combines local sensing, display updates, and host communications. Its eight 8-bit ADC channels support analog front-end monitoring, while 33 I/O pins provide control for display selection, buttons, indicators, and communication lines. The 20 MHz clock and 192 bytes of RAM are adequate for panel state management and short protocol tasks, and the USART offers a simple link to a host computer or service port. SPI or I²C can connect a display or programmable peripheral. The 2.5 V to 5.5 V supply range allows integration with both lower-voltage and 5 V subsystems when logic levels are handled correctly. For production equipment, designers should verify brownout behavior, startup timing, and the exact -E temperature limits in the manufacturer datasheet.
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Önerilen Ürünler Özeti
Mühendislik referans verileri: PIC16F74-E/PT — karşılaştırma, tasarım rehberi ve uyumluluk bilgileri.
Seçim Kılavuzu
Alternatiflerle Karşılaştırma
| Parametre | Bu Ürün | PIC16F74-I/PT | PIC16F74T-E/PT | PIC16F74T-I/PT | PIC16F74-E/P |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| CPU Architecture | 8-bit PIC microcontroller | 8-bit PIC microcontroller | 8-bit PIC microcontroller | 8-bit PIC microcontroller | 8-bit PIC microcontroller |
| Maximum Clock Speed | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz |
| Program Memory | 7 KB (4K x 14 words) | 7 KB (4K x 14 words) | 7 KB (4K x 14 words) | 7 KB (4K x 14 words) | 7 KB (4K x 14 words) |
| Data Memory | 192 bytes RAM | 192 bytes RAM | 192 bytes RAM | 192 bytes RAM | 192 bytes RAM |
| Supply Voltage Range | 2.5 V to 5.5 V | 2.5 V to 5.5 V | 2.5 V to 5.5 V | 2.5 V to 5.5 V | 2.5 V to 5.5 V |
| ADC | 8 channels, 8-bit resolution | 8 channels, 8-bit resolution | 8 channels, 8-bit resolution | 8 channels, 8-bit resolution | 8 channels, 8-bit resolution |
| Serial Interfaces | SPI, I²C, and USART | SPI, I²C, and USART | SPI, I²C, and USART | SPI, I²C, and USART | SPI, I²C, and USART |
| Temperature-Grade Suffix | -E extended-temperature grade | -I industrial-temperature grade | -E extended-temperature grade | -I industrial-temperature grade | -E extended-temperature grade |
Ana Farklılayıcılar
- Verified exact -E temperature-grade order code (karşılaştırma:PIC16F74-I/PT)
- Verified 44-pin PT package designation (karşılaştırma:PIC16F74-E/P)
- Integrated communication and conversion peripherals (karşılaştırma:PIC16F74T-E/PT)
- Complete control peripheral set in one device (karşılaştırma:PIC16F74-E/P)
Tasarım Notları
Follow the manufacturer’s recommended decoupling and printed-circuit-board layout for the 2.5 V to 5.5 V supply rails and oscillator circuit. Place input and output capacitors close to their associated pins, preserve the specified ground-return path, and avoid routing noisy digital signals near sensitive analog inputs. The eight ADC channels are only useful if the analog reference and signal-conditioning network are kept separate from switching nodes and digital return currents.
Do not approve an MCU substitution solely from the family name or package count. Verify the exact ordering suffix, temperature grade, pin names, peripheral assignments, memory map, and programming configuration against the manufacturer datasheet and pin-and-code compatibility chart. The verified source material confirms that PIC16F74 devices are available in 40-pin and 44-pin packages, so an assumed footprint match can cause PCB or firmware incompatibility.
Budget the supply rail for the MCU, communication peripherals, pull resistors, and any externally connected loads rather than using the 5.5 V maximum supply value as a power estimate. The supplied data does not include operating, idle, or sleep current, so those values must come from the manufacturer electrical-characteristics table. Confirm that every connected peripheral and I/O signal remains within the selected supply domain to avoid unreliable communication or damage.
The 44-pin TQFP uses a 0.50 mm pitch, making fine-pitch soldering and careful escape routing important. Inspect solder bridges and pin-1 orientation after assembly, particularly on densely routed boards. Because XAIPART’s canonical package library does not include a 44-pin TQFP drawing, use the official Microchip package drawing and land pattern directly rather than extrapolating a 48-pin TQFP footprint.
Uyumluluk Bilgisi
The verified DigChip snippet identifies the offered package as lead-free. RoHS, REACH, halogen-free, and conflict-minerals declarations were not present in the supplied verified excerpts and are therefore marked unknown. AEC-Q100 is not applicable to this general-purpose microcontroller listing.
