PIC16F877-04E/PT - 8-bit PIC MCU, 14KB Flash, 44-TQFP | Microchip
MPN: PIC16F877-04E/PT ✗ סוף ייצורPIC16F877-04E/PT סקירה
What is an 8-bit PIC microcontroller? An 8-bit PIC microcontroller is a RISC-based Harvard-architecture MCU from Microchip Technology. The PIC16F877 belongs to the mid-range PIC16F family, sits inside the broader PIC16F family, and is part of Microchip's 8-bit microcontroller portfolio alongside PIC18 and PIC10/12/16 devices. These MCUs integrate CPU core, Flash program memory, SRAM, EEPROM, ADCs, timers, and communication peripherals on a single chip.
Key features of the PIC16F877-04E/PT include 200 ns instruction execution, 8 channels of 10-bit Analog-to-Digital conversion, two 8-bit timers plus one 16-bit timer, two Capture/Compare/PWM modules, an MSSP configurable as SPI or I2C, a USART, an ICD (In-Circuit Debugger) interface, and self-programming support. The -04E suffix indicates a 4 MHz speed grade with the Extended temperature range.
The architecture is built on a 14-bit instruction word with a 35-instruction RISC set, delivering deterministic interrupt latency and predictable timing. The 10-bit ADC provides 8 input channels at conversion rates suitable for sensor signal acquisition, while the two PWM/Capture/Compare modules can drive motor control, LED dimming, or waveform generation tasks.
Applications include industrial automation controllers, sensor signal acquisition systems, motor control boards, embedded instrumentation, and legacy equipment retrofits. The PIC16F877A is the preferred successor for new designs; the -04E/PT is intended for maintenance of existing designs.
When designing with this part, ensure Vdd decoupling with 100 nF and 10 uF capacitors placed close to the supply pins. The MCLR pin requires proper configuration for in-circuit debugging or reset. Use ICD2/ICD3 programmers for development.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet. The PIC16F877 datasheet (DS30292C) remains the authoritative reference for electrical characteristics and peripheral configuration.
חלופות תחליף ישיר עבור PIC16F877-04E/PT — אותו מארז, תואם פין-לפין. חלקים במארז שונה הדורשים עיבוד מחדש של ה-PCB אינם נכללים.
וריאנטים בסדרה זו
דגמים מאותה סדרה התואמים Drop-in עם PIC16F877-04E/PT (אותו גורם צורה וטביעת רגל) — שונים ב Core Architecture, Package, ADC, Operating Temperature, Serial Interfaces.
PIC16F877A-I/PT
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←PIC16F877-04I/PT
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←PIC16F887-I/PT
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←PIC16F874A-I/PT
✅ Drop-In📋 חלופה להתייחסות (לא בקטלוג)
PIC16F877-20E/PT
✅ Drop-In📋 חלופה להתייחסות (לא בקטלוג)
PIC16F877-04E/PT דירוגים מרביים ומאפיינים חשמליים
| Core Architecture | PIC (RISC, Harvard) |
| רוחב אפיק נתונים | 8 bit |
| Instruction Word Width | 14 bit |
| Program Memory Type | Flash |
| Program Memory Size | 14 KB (8K x 14) |
| RAM Size | 368 byte |
| EEPROM Size | 256 byte |
| תדר שעון מקסימלי | 4 MHz |
| Instruction Execution Time | 200 ns |
| מתח אספקה פעיל | 2.0 V to 5.5 V |
| I/O Pins | 33 |
| ADC | 8 channels x 10 bit |
| Timers | 2 x 8-bit + 1 x 16-bit |
| PWM / CCP Modules | 2 |
| Communication Interfaces | MSSP (SPI/I2C), USART |
| מארז | 44-TQFP (10x10 mm) |
| סוג הרכבה | Surface Mount |
| טווח טמפרטורת פעולה | -40C to +125C (Extended, E suffix) |
| In-Circuit Debug | ICD interface |
| Self-Programming | Yes |
| סטטוס RoHS | Compliant |
תצורת פינים של PIC16F877-04E/PT
| פין 1 | MCLR/Vpp — Master Clear (reset) input / programming voltage |
| פין 2 | RA0/AN0 — PORTA bit 0 / Analog input channel 0 |
| פין 3 | RA1/AN1 — PORTA bit 1 / Analog input channel 1 |
| פין 4 | RA2/AN2/Vref- — PORTA bit 2 / Analog input 2 / ADC Vref- |
| פין 5 | RA3/AN3/Vref+ — PORTA bit 3 / Analog input 3 / ADC Vref+ |
| פין 6 | RA4/T0CKI — PORTA bit 4 / Timer0 clock input |
| פין 7 | RA5/AN4/SS — PORTA bit 5 / Analog input 4 / SPI slave select |
| פין 8 | RE0/RD/AN5 — PORTE bit 0 / Parallel port read / Analog input 5 |
| פין 9 | RE1/WR/AN6 — PORTE bit 1 / Parallel port write / Analog input 6 |
| פין 10 | RE2/CS/AN7 — PORTE bit 2 / Parallel port chip select / Analog input 7 |
| פין 11 | VDD — Positive supply voltage (2.0V to 5.5V) |
| פין 12 | VSS — Ground reference |
| פין 13 | OSC1/CLKI — Oscillator crystal input / external clock input |
| פין 14 | OSC2/CLKO — Oscillator crystal output / clock output |
| פין 15 | RC0/T1OSO/T1CKI — PORTC bit 0 / Timer1 oscillator output / Timer1 clock input |
| פין 16 | RC1/T1OSI/CCP2 — PORTC bit 1 / Timer1 oscillator input / CCP2 I/O |
| פין 17 | RC2/CCP1 — PORTC bit 2 / CCP1 I/O |
| פין 18 | RC3/SCK/SCL — PORTC bit 3 / SPI clock / I2C clock |
| פין 19 | RD0/PSP0 — PORTD bit 0 / Parallel slave port bit 0 |
| פין 20 | RD1/PSP1 — PORTD bit 1 / Parallel slave port bit 1 |
| פין 21 | RD2/PSP2 — PORTD bit 2 / Parallel slave port bit 2 |
| פין 22 | RD3/PSP3 — PORTD bit 3 / Parallel slave port bit 3 |
| פין 23 | RC4/SDI/SDA — PORTC bit 4 / SPI data in / I2C data |
| פין 24 | RC5/SDO — PORTC bit 5 / SPI data out |
| פין 25 | RC6/TX/CK — PORTC bit 6 / USART transmit / USART clock |
| פין 26 | RC7/RX/DT — PORTC bit 7 / USART receive / USART data |
| פין 27 | RD4/PSP4 — PORTD bit 4 / Parallel slave port bit 4 |
| פין 28 | RD5/PSP5 — PORTD bit 5 / Parallel slave port bit 5 |
| פין 29 | RD6/PSP6 — PORTD bit 6 / Parallel slave port bit 6 |
| פין 30 | RD7/PSP7 — PORTD bit 7 / Parallel slave port bit 7 |
| פין 31 | VSS — Ground reference |
| פין 32 | VDD — Positive supply voltage |
| פין 33 | RB0/INT — PORTB bit 0 / External interrupt input |
| פין 34 | RB1 — PORTB bit 1 |
| פין 35 | RB2 — PORTB bit 2 |
| פין 36 | RB3/PGM — PORTB bit 3 / Low-voltage programming input |
| פין 37 | RB4 — PORTB bit 4 |
| פין 38 | RB5 — PORTB bit 5 |
| פין 39 | RB6/PGC — PORTB bit 6 / ICD clock |
| פין 40 | RB7/PGD — PORTB bit 7 / ICD data |
| פין 41 | VSS — Ground reference |
| פין 42 | VDD — Positive supply voltage |
| פין 43 | NC — Not connected (per datasheet, TQFP pin reserved) |
| פין 44 | NC — Not connected (per datasheet, TQFP pin reserved) |
יישומים טיפוסיים
PIC16F877-04E/PT מתאים עבור 6 יישוםs: Industrial Automation Controllers, Sensor Signal Acquisition Boards, Motor Control and PWM Drive, Embedded Instrumentation and Data Loggers, Legacy Equipment Retrofit and Maintenance, Educational and Hobby Development Boards.
Industrial Automation Controllers
The PIC16F877-04E/PT fits industrial automation controllers because it integrates 33 I/O pins, 8 channels of 10-bit ADC, and a USART for sensor and actuator interfacing on a single chip. At 4 MHz with 200 ns instruction execution, the part provides deterministic interrupt latency for real-time control loops. The 14 KB Flash supports ladder-logic-style program structures, while the 256-byte EEPROM stores calibration constants across power cycles. The extended -40C to +125C temperature range (E suffix) qualifies the part for factory-floor enclosures.
מומלץ
Sensor Signal Acquisition Boards
The PIC16F877-04E/PT is well-suited for multi-signal data acquisition boards because its 8-channel 10-bit ADC samples analog sensor inputs (temperature, pressure, flow) at rates sufficient for industrial telemetry. The 368-byte RAM buffers sample sets, while 14 KB Flash stores the conversion and averaging algorithms. The MSSP peripheral reads SPI-based digital sensors (e.g., MCP3204) in parallel with the analog scan, and the USART streams formatted data to a host. The 44-TQFP gives board designers 33 I/O for both analog and digital sensor chains.
מומלץ
Motor Control and PWM Drive
The PIC16F877-04E/PT drives brushed DC and small stepper motors via its two CCP/PWM modules generating complementary PWM signals at configurable frequencies. The 16-bit timer sets the PWM period with sub-microsecond resolution, while the 8-bit timers handle commutation sequencing for stepper drives. H-bridge driver ICs such as the L293D or VNH2SP30 are commanded directly from the 33 I/O pins. The extended temperature grade supports under-hood and motor-mounted electronics.
מומלץ
Embedded Instrumentation and Data Loggers
The PIC16F877-04E/PT powers portable data loggers because its 256-byte EEPROM retains logged samples across battery swaps without external NVRAM. The PIC's low-power sleep mode combined with the 2.0-5.5 V supply range supports multi-month battery operation from two AA cells. Real-time clock ICs (e.g., DS1307 or MCP79410) attach over the I2C MSSP channel. The 14 KB Flash stores FAT-style file system or binary log formats with timestamp headers.
מומלץ
Legacy Equipment Retrofit and Maintenance
The PIC16F877-04E/PT is the maintenance part of choice for field-replacement scenarios in equipment shipped between 2000 and 2015, where PIC16F877 was a design standard. Its 44-TQFP footprint and pinout remain unchanged across the -04, -04I, -04E, -20, and A revision variants, allowing direct board swaps. Distributor inventory of the -04E/PT specifically targets equipment manufacturers needing to service installed bases. For new designs the A revision is preferred.
מומלץ
Educational and Hobby Development Boards
The PIC16F877-04E/PT appears on educational trainer boards and PIC programmer kits because its 44-TQFP package is easy to handle, the ICD interface supports in-circuit debugging, and the 14 KB Flash fits typical classroom projects (LED chasers, LCD drivers, frequency counters). The Microchip PICDEM and PICkit boards reference this part. Hobbyists building retro projects can use the freely available MPLAB X IDE and XC8 compiler.
מומלץ
סיכום מוצרים מומלצים
נתוני עזר הנדסיים עבור PIC16F877-04E/PT — השוואה, הנחיות תכנון ומידע על תאימות.
מדריך בחירה
השוואה עם חלופות
| פרמטר | מוצר זה | PIC16F877A-I/PT | PIC16F877-04I/PT | PIC16F887-I/PT | PIC16F874A-I/PT | PIC16F877-20E/PT |
|---|---|---|---|---|---|---|
| Package | 44-TQFP (10x10 mm) | 44-TQFP (10x10 mm) - same | 44-TQFP (10x10 mm) - same | 44-TQFP (10x10 mm) - same | 44-TQFP (10x10 mm) - same | 44-TQFP (10x10 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory | 14 KB Flash | 14 KB Flash | 14 KB Flash | 14 KB Flash | 7 KB Flash (-50%) | 14 KB Flash |
| Maximum Clock Frequency | 4 MHz | 20 MHz | 4 MHz | 20 MHz | 20 MHz | 20 MHz |
| Lifecycle Status | NRND | Active | NRND | Active | Active | NRND |
| Temperature Range | -40C to +125C (Extended) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +125C (Extended) |
| ADC Channels | 8 x 10-bit | 8 x 10-bit (enhanced) | 8 x 10-bit | 14 x 10-bit | 8 x 10-bit | 8 x 10-bit |
| PWM / CCP Modules | 2 | 2 (enhanced CCP) | 2 | 3 (ECCP) | 2 | 2 |
מבדילים עיקריים
- Extended temperature range -40C to +125C for industrial/automotive environments (לעומתPIC16F877A-I/PT)
- Lower-speed grade reduces EMI and power consumption in cost-sensitive designs (לעומתPIC16F877-20E/PT)
- Established mid-range PIC architecture with extensive legacy ecosystem support (לעומתPIC16F887-I/PT)
הערות תכנון
Decouple the PIC16F877-04E/PT with a 100 nF ceramic capacitor placed within 5 mm of each VDD pin (pins 11, 32, 42) and a single 10 uF tantalum or ceramic bulk capacitor on the supply rail. The 44-TQFP package has three VDD pins (11, 32, 42) and three VSS pins (12, 31, 41); all must be connected. Per the Microchip PIC16F87x datasheet (DS30292C), inadequate decoupling causes ADC noise and brown-out resets under motor load transients.
Route the oscillator traces (OSC1 pin 13, OSC2 pin 14) as short as possible, kept away from high-current switching traces, and surrounded by ground pour on both sides. For 4 MHz operation a standard 4 MHz crystal with 22 pF load capacitors is recommended. The MCLR pin (1) requires a 10 kohm pull-up to VDD and a 100 nF cap to ground for noise immunity; in ICD mode this pin is also the programming voltage input and must not be left floating.
The PIC16F877-04E/PT shares the 44-TQFP footprint with PIC16F877A and PIC16F887, but the configuration registers (CONFIG1, CONFIG2) differ between revisions. When migrating firmware from the -04E to the A revision, review oscillator configuration and watchdog timer settings per the PIC16F877A datasheet (DS39582A). The PIC16F887 uses a different register map and is not source-compatible without porting. For long-term designs, use PIC16F887-I/PT as the successor to maximize peripheral availability.
Estimated: at 4 MHz clock, 5 V supply, and typical CMOS load switching, the PIC16F877-04E/PT dissipates approximately 25-50 mW. The 44-TQFP package has theta_JA around 50 C/W, so junction temperature rise is 1.5-2.5 C above ambient. At the 125 C extended-temperature ceiling this leaves 50 C margin to the absolute maximum junction of 150 C. No heatsink is required; standard PCB thermal relief on the ground pins is sufficient for industrial use.
מידע על תאימות
RoHS and lead-free compliant per Microchip product page. Not AEC-Q100 qualified - the extended temperature grade is for industrial environments, not automotive safety-critical. Microchip QS-9000 certified manufacturing facility (since 1999) per DigiKey listing.