PIC16F877-04I/PQ - 8-Bit 4MHz 14KB Flash MCU 44-MQFP | Microchip
Teilenummer: PIC16F877-04I/PQ ✓ Aktiv| Menge | Stückpreis | Gesamt |
|---|---|---|
| 1 | $7.45 | $7,45 |
| 10 | $6.71 | $67,10 |
| 100 | $5.96 | $596,00 |
| 500 | $5.1 | $2.550,00 |
| 1.000 | $4.35 | $4.350,00 |
PIC16F877-04I/PQ Übersicht
An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, non-volatile program memory, working RAM, peripheral set, and I/O on one die. The PIC16F family uses Microchip's enhanced Harvard RISC architecture and occupies the mid-range tier of the PIC line, sitting between the baseline PIC10/12/16 and the high-performance PIC18/PIC24 families. Mid-range MCUs are widely used in embedded control where deterministic timing, low power, and simple peripheral sets are more important than raw MIPS - typical roles include sensor conditioning, user-interface driving, and protocol bridging.
Key features include five built-in peripherals: a 10-bit 8-channel Analog-to-Digital Converter (ADC), two 8-bit timers plus one 16-bit timer, a Universal Synchronous Asynchronous Receiver Transmitter (USART), a Master Synchronous Serial Port (MSSP) supporting both SPI and I2C, and a Capture/Compare/PWM (CCP) module. The device operates from 2.0 V to 5.5 V and provides 25 mA source/sink per I/O, supporting direct LED driving. Only 35 single-word instructions simplify code development, while the 14-bit wide instruction word keeps the program counter at 8K address depth.
The 44-pin MQFP (PQ) package exposes the full peripheral set, including two analog comparators and a parallel slave port, which are absent on the 28-pin PIC16F876. The 200 ns instruction cycle enables deterministic interrupt response suitable for motor-control and power-conversion loops. Brown-out Reset (BOR), Power-on Reset (POR), and a Watchdog Timer (WDT) protect against lock-ups in industrial environments.
Typical applications include industrial automation controllers, HVAC and building-control systems, automotive body electronics, data-acquisition front ends, and consumer appliances. The 4 MHz speed grade is well matched to UART bridges, sensor hubs, and human-machine interface (HMI) key-scan matrices. The I-grade temperature range covers outdoor and factory-floor installations.
Design consideration: pair the MCU with a 20 MHz resonator only if the -20 speed variant is selected; the -04 grade uses a 4 MHz crystal or resonator. In-Circuit Serial Programming (ICSP) requires dedicated RB6/RB7 pins, so do not repurpose them for outputs without isolating the programmer during field updates. The MQFP package needs a thermal pad copper pour for production wave-solder reliability.
This page consolidates distributor pricing, same-family drop-in alternatives, and field-tested design notes that go beyond what the manufacturer datasheet alone provides, helping sourcing, design, and obsolescence teams evaluate the PIC16F877-04I/PQ in context.
Drop-in-Alternativen für PIC16F877-04I/PQ – gleiches Gehäuse, Pin-kompatibel. Bauteile mit anderem Gehäuse, die eine PCB-Überarbeitung erfordern, sind ausgeschlossen.
Varianten dieser Serie
Modelle derselben Serie, die drop-in-kompatibel sind mit PIC16F877-04I/PQ (gleiche Bauform und Footprint) – abweichend in Core Architecture, Package, Timers, Operating Temperature, ADC.
Schnellvergleichstool – Wählen Sie Alternativbauteile für den Direktvergleich:
PIC16F877-04E/PQ
✅ Drop-In✓ Auf Lager
$5.72 / Stück
Datenblatt ansehen →PIC16F874-04I/PQ
✅ Drop-In✓ Auf Lager
$5.78 / Stück
Datenblatt ansehen →PIC16F877-04/PQ
✅ Drop-In✓ Auf Lager
$5.7 / Stück
Datenblatt ansehen →PIC16F874-04/PQ
✅ Drop-In✓ Auf Lager
$5.9 / Stück
Datenblatt ansehen →PIC16F877-04I/PQ Grenzwerte & elektrische Eigenschaften
| Architecture | 8-bit PIC Mid-Range Harvard RISC |
| Core | PIC16 |
| Family | PIC 16F |
| Maximale Taktfrequenz | 4 MHz |
| Instruction Execution Time | 200 ns |
| Program Memory Type | FLASH |
| Program Memory Size | 14 KB (8K x 14 words) |
| Data RAM | 368 bytes |
| EEPROM | 256 bytes |
| I/O Pins | 33 |
| Supply Voltage Range | 2.0 V to 5.5 V |
| Betriebstemperaturbereich | -40 C to +85 C (Industrial) |
| ADC | 10-bit, 8 channels |
| Timers | 2 x 8-bit + 1 x 16-bit |
| Communication Interfaces | USART, MSSP (SPI / I2C) |
| CCP Module | Yes (Capture / Compare / PWM) |
| Gehäuse | 44-pin MQFP (10 x 10 mm) |
| Montageart | Surface Mount |
| Speed Grade Suffix | -04 (4 MHz) |
| Temperature Grade Suffix | I (Industrial) |
| Package Suffix | /PQ (44-MQFP) |
PIC16F877-04I/PQ /pq (44-mqfp) Pinbelegungsleitfaden
Pinbelegung für PIC16F877-04I/PQ (/pq (44-mqfp)-Gehäuse). Dieser digitale IC umfasst GPIO, Kommunikationsschnittstellen (UART, SPI, I2C) und Versorgungspins. Alternative Pin-Funktionen und Konfigurationsoptionen entnehmen Sie dem Herstellerdatenblatt. Unverzichtbar für Embedded-System-Design und PCB-Layout.
Keine detaillierten Pinbelegungsdaten verfügbar für PIC16F877-04I/PQ.
Siehe die Datenblatt für die vollständige Pin-Konfiguration.
Typische Anwendungen
PIC16F877-04I/PQ ist geeignet für 6 Anwendungs: Industrial Automation Controllers, HVAC and Building Control, Data Acquisition Front Ends, Automotive Body Electronics, User Interface / Keypad Controllers, Consumer Appliance Control Boards.
Industrial Automation Controllers
The PIC16F877-04I/PQ's 4 MHz CPU, 33 I/O pins, and integrated 10-bit 8-channel ADC map cleanly onto PLC I/O modules and small machine controllers. The industrial -40 C to +85 C temperature grade covers factory-floor installations, while the on-chip USART and MSSP (SPI/I2C) provide native links to RS-485 transceivers and industrial sensor buses. Its 200 ns instruction cycle keeps deterministic loop times for sequencing and PWM-driven actuator control.
Empfohlen
HVAC and Building Control
HVAC controllers leverage the PIC16F877-04I/PQ's 10-bit ADC to read thermistors, pressure transducers, and airflow sensors, while its CCP module generates PWM outputs for damper and valve actuation. The 256 B of EEPROM stores calibration constants and user set-points across power cycles. Industrial temperature operation and brown-out reset ensure reliable startup across unstable building-supply conditions.
Empfohlen
Data Acquisition Front Ends
Multi-channel data loggers use the PIC16F877-04I/PQ's 8-channel 10-bit ADC, 256 B of EEPROM, and MSSP to stream digitized sensor data to an external SD card or EEPROM. The 4 MHz instruction rate comfortably handles ADC sampling at the 8-channel scan rate, and the USART forwards telemetry to a host computer. Industrial -40 C to +85 C support covers outdoor and indoor remote-monitoring installations.
Empfohlen
Automotive Body Electronics
Non-safety automotive modules such as seat controllers, mirror adjusters, and lighting drivers fit naturally inside the PIC16F877-04I/PQ's capabilities. The 33 I/O pins drive relays, LEDs, and switches, while the CCP module handles PWM dimming. Its operating voltage range (2.0 V to 5.5 V) tolerates 12 V automotive battery cranking transients when paired with external TVS protection. The industrial temperature range covers cabin-environment operation.
Empfohlen
User Interface / Keypad Controllers
Human-machine interface (HMI) panels use the PIC16F877-04I/PQ's PORTB interrupt-on-change feature for keypad scanning without CPU polling, plus its 33 I/O pins to drive 7-segment or character LCDs. The 4 MHz CPU sustains smooth menu navigation while the USART relays user input to a host processor. EEPROM stores menu configuration and last-known state across power cycles.
Empfohlen
Consumer Appliance Control Boards
Washing machines, microwave ovens, and small kitchen appliances depend on the PIC16F877-04I/PQ's robust I/O set, ADC channels for sensing temperature and water level, and PWM via the CCP module for motor and heater regulation. Industrial -40 C to +85 C support handles appliance interior temperature rise, and the 256 B EEPROM stores cycle state and error logs. Proven PIC mid-range firmware tools accelerate consumer-product certification timelines.
Empfohlen
Zusammenfassung der empfohlenen Produkte
Technische Referenzdaten für PIC16F877-04I/PQ – Vergleich, Designhinweise und Compliance-Informationen.
Auswahlhilfe
Vergleich mit Alternativen
| Parameter | Dieses Produkt | PIC16F877-04E/PQ | PIC16F874-04I/PQ | PIC16F877-04/PQ | PIC16F874-04/PQ |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 44-MQFP (10x10 mm) | 44-MQFP (10x10 mm) - same | 44-MQFP (10x10 mm) - same | 44-MQFP (10x10 mm) - same | 44-MQFP (10x10 mm) - same |
| Program Memory (Flash) | 14 KB (8K x 14) | 14 KB | 7 KB | 14 KB | 7 KB |
| RAM / EEPROM | 368 B / 256 B | 368 B / 256 B | 368 B / 256 B | 368 B / 256 B | 368 B / 256 B |
| Maximum Clock Frequency | 4 MHz | 4 MHz | 4 MHz | 4 MHz | 4 MHz |
| Operating Temperature Range | -40 C to +85 C (Industrial) | -40 C to +125 C (Extended) | -40 C to +85 C (Industrial) | 0 C to +70 C (Commercial) | 0 C to +70 C (Commercial) |
| ADC | 10-bit, 8 channels | 10-bit, 8 channels | 10-bit, 8 channels | 10-bit, 8 channels | 10-bit, 8 channels |
| I/O Pins | 33 | 33 | 33 | 33 | 33 |
| Communication Interfaces | USART + MSSP (SPI/I2C) | USART + MSSP (SPI/I2C) | USART + MSSP (SPI/I2C) | USART + MSSP (SPI/I2C) | USART + MSSP (SPI/I2C) |
Wichtigste Unterscheidungsmerkmale
- Largest Flash memory at the 44-MQFP footprint (vs. PIC16F874-04I/PQ)
- Industrial temperature grade for harsh environments (vs. PIC16F877-04/PQ)
- Full peripheral set on 44-MQFP (vs. PIC16F876 (28-pin SOIC/SPDIP))
Designhinweise
Power the PIC16F877-04I/PQ from a regulated 2.0 V to 5.5 V supply. Place a 100 nF decoupling capacitor close to each VDD/VSS pair (the device has two pairs on this 44-MQFP package). For best ADC accuracy, drive AVDD from a low-noise regulator; even a few millivolts of ripple will couple into analog conversions.
Place the 4 MHz crystal or resonator within a few millimeters of OSC1/OSC2 (pins 13/14) and route grounds symmetrically. Keep the clock traces short and shielded by a ground pour to avoid coupling noise into the ADC inputs. The MCLR/VPP pin (pin 1) requires a 10 kohm pull-up and a 100 nF cap for in-circuit serial programming (ICSP).
Do not exceed 25 mA source or sink per I/O pin, and never exceed the 200 mA total package dissipation budget. The PORTB interrupt-on-change feature must be configured carefully - any mismatch between RBIF and the corresponding IOC flag will leave interrupts masked. The MSSP module needs correct direction (TRIS) settings before enabling I2C mode, otherwise the SDA/SCL lines will fight each other and damage ports.
Estimated: at 4 MHz, 5 V supply, full I/O loading and typical industrial ambient, power dissipation is well under 100 mW - the 44-MQFP package handles this comfortably without thermal relief. Even at 85 C ambient, junction temperature remains safely below the 150 C absolute maximum. No heatsink or thermal pad copper pour is required for the MQFP package at this power level.
Compliance-Informationen
RoHS and REACH compliance status not explicitly stated in the verified web data. Microchip is QS-9000 / ISO 9001 certified at its Chandler and Tempe facilities. AEC-Q100 is not applicable for general industrial / consumer MCU parts; choose a Q-graded variant for automotive safety-critical systems. Lead-free is implied by the Microchip modern packaging - reclaimed from platform note that Microchip QS-9000 quality system applies to this PICmicro line.
