PIC16F874-04E/PT - 8-Bit 4MHz Flash MCU, 7KB, 44-TQFP | Microchip
MPN: PIC16F874-04E/PT ✓ فعالPIC16F874-04E/PT جائزہ
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash/ROM), data memory (RAM), and a range of peripheral interfaces. The PIC16F874 belongs to Microchip's mid-range PIC® 16F family, which uses a Harvard architecture with separate program and data buses, enabling predictable instruction timing. Within the broader taxonomy, the PIC16F874 sits as: 8-bit MCU -> RISC MCU -> PIC® 16F family -> Flash-based mid-range PIC -> automotive-grade variant (E suffix) -> TQFP-44 package. This hierarchy is what allows engineers to migrate between similar PIC16F87x parts with minimal code changes.
Key features of this device include 200 ns instruction execution time at 4 MHz oscillator, in-system programmability via ICSP, a 10-bit Analog-to-Digital Converter (ADC) with up to 8 input channels, and the nanoWatt low-power feature set that includes sleep mode, watchdog timer, and on-chip oscillator calibration. Brown-out Reset (BOR) and Power-on Reset (POR) ensure reliable startup under fluctuating supply conditions, while the In-Circuit Serial Programming (ICSP) interface allows firmware updates without removing the part from the board.
The PIC16F874 is built on a CMOS process and uses a 14-bit instruction word format. Its peripheral set is comparable to the larger PIC16F877 but in a smaller 44-pin footprint rather than 40-pin PDIP or 44-pin TQFP. Compared with the 28-pin PIC16F876, this 44-pin variant exposes additional I/O and ADC channels. The architecture supports prioritized interrupts with hardware context saving and a hardware stack eight levels deep.
Typical applications for the PIC16F874-04E/PT include automotive body controllers and instrument clusters, industrial sensor conditioning boards, low-cost motor control using PWM and CCP, battery management front-ends, and small appliances requiring a low-temperature microcontroller that can be re-flashed in the field. Its wide operating voltage tolerance (4 V to 5.5 V) makes it tolerant of the load-dump transients seen in 12 V automotive systems when paired with a 5 V regulator.
When designing with this part, reserve the MCLR pin as the reset input (do not tie directly to VDD without the recommended pull-up), and follow Microchip's recommended decoupling scheme of a 100 nF ceramic capacitor on each VDD pin and a 10 µF bulk capacitor near the IC. For automotive (-40 °C to +125 °C) deployment, pay special attention to oscillator start-up time and use the internal RC oscillator only when timing accuracy is non-critical.
This page synthesizes distributor pricing, drop-in alternatives within the same TQFP-44 footprint, and practical design notes not found on a single manufacturer datasheet page.
کے لیے ڈراپ اِن متبادل PIC16F874-04E/PT — یکساں پیکیج، پن سے پن مطابقت پذیر۔ مختلف پیکیج والے پرزے جن کے لیے PCB دوبارہ کام درکار ہو، شامل نہیں ہیں۔
اس سیریز میں مختلف ورژن
اسی سیریز کے ماڈلز جو ڈراپ اِن مطابقت رکھتے ہیں PIC16F874-04E/PT (یکساں فارم فیکٹر اور فٹ پرنٹ) — میں مختلف Package, Timers, Core Architecture, CCP Modules, Operating Temperature.
PIC16F874-04I/PT
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC16F874T-04E/PT
✅ ڈراپ-اِن📋 حوالہ جاتی متبادل (کیٹلاگ میں نہیں)
PIC16F877-04/PT
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC16F874-04/PQ
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC16F874-04E/PQ
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC16F874-04E/PT زیادہ سے زیادہ ریٹنگز اور برقی خصوصیات
| Core Architecture | PIC 8-bit RISC (Harvard) |
| Instruction Word | 14-bit |
| Clock Speed (max) | 4 MHz |
| Instruction Cycle | 200 ns |
| Program Memory | 7 KB (4K × 14) Flash |
| RAM | 192 bytes |
| EEPROM | 128 bytes |
| I/O Pins | 33 |
| ADC | 10-bit, 8 channels |
| Timers | 2 × 8-bit, 1 × 16-bit |
| CCP Modules | 1 (Capture/Compare/PWM) |
| Communication | USART, MSSP (SPI / I²C) |
| سپلائی وولٹیج | 4 V to 5.5 V |
| آپریٹنگ درجہ حرارت | -40 °C to +125 °C (automotive grade) |
| پیکیج | 44-pin TQFP (PT), 10 × 10 mm |
| ماؤنٹنگ ٹائپ | Surface Mount (Gull-wing) |
| RoHS اسٹیٹس | Compliant |
| Programming | ICSP (In-Circuit Serial Programming) |
PIC16F874-04E/PT پن کنفیگریشن
| پن 1 | MCLR — Master Clear (reset) input, active low |
| پن 2 | RA0/AN0 — Port A bit 0 / Analog input 0 |
| پن 3 | RA1/AN1 — Port A bit 1 / Analog input 1 |
| پن 4 | RA2/AN2/VREF- — Port A bit 2 / Analog input 2 / ADC VREF- |
| پن 5 | RA3/AN3/VREF+ — Port A bit 3 / Analog input 3 / ADC VREF+ |
| پن 6 | RA4/T0CKI — Port A bit 4 / Timer0 clock input |
| پن 7 | RA5/AN4/SS — Port A bit 5 / Analog input 4 / SPI slave select |
| پن 8 | RE0/RD/AN5 — Port E bit 0 / Parallel-port read / Analog input 5 |
| پن 9 | RE1/WR/AN6 — Port E bit 1 / Parallel-port write / Analog input 6 |
| پن 10 | RE2/CS/AN7 — Port E bit 2 / Parallel-port chip select / Analog input 7 |
| پن 11 | VDD — Positive supply voltage (4 V to 5.5 V) |
| پن 12 | VSS — Ground reference |
| پن 13 | OSC1/CLKI — Oscillator input / external clock input |
| پن 14 | OSC2/CLKO — Oscillator output / clock output (Fosc/4) |
| پن 15 | RC0/T1OSO/T1CKI — Port C bit 0 / Timer1 oscillator output / Timer1 clock |
| پن 16 | RC1/T1OSI/CCP2 — Port C bit 1 / Timer1 oscillator input / CCP2 |
| پن 17 | RC2/CCP1 — Port C bit 2 / CCP1 (PWM output) |
| پن 18 | RC3/SCK/SCL — Port C bit 3 / SPI clock / I2C clock |
| پن 19 | RD0/PSP0 — Port D bit 0 / Parallel Slave Port bit 0 |
| پن 20 | RD1/PSP1 — Port D bit 1 / Parallel Slave Port bit 1 |
| پن 21 | RD2/PSP2 — Port D bit 2 / Parallel Slave Port bit 2 |
| پن 22 | RD3/PSP3 — Port D bit 3 / Parallel Slave Port bit 3 |
| پن 23 | RC4/SDI/SDA — Port C bit 4 / SPI data in / I2C data |
| پن 24 | RC5/SDO — Port C bit 5 / SPI data out |
| پن 25 | RC6/TX/CK — Port C bit 6 / USART TX / USART clock |
| پن 26 | RC7/RX/DT — Port C bit 7 / USART RX / USART data |
| پن 27 | RD4/PSP4 — Port D bit 4 / Parallel Slave Port bit 4 |
| پن 28 | RD5/PSP5 — Port D bit 5 / Parallel Slave Port bit 5 |
| پن 29 | RD6/PSP6 — Port D bit 6 / Parallel Slave Port bit 6 |
| پن 30 | RD7/PSP7 — Port D bit 7 / Parallel Slave Port bit 7 |
| پن 31 | VSS — Ground reference |
| پن 32 | VDD — Positive supply voltage (4 V to 5.5 V) |
| پن 33 | RB0/INT — Port B bit 0 / External interrupt input |
| پن 34 | RB1 — Port B bit 1 |
| پن 35 | RB2 — Port B bit 2 |
| پن 36 | RB3/PGM — Port B bit 3 / Low-voltage programming |
| پن 37 | RB4 — Port B bit 4 (interrupt-on-change) |
| پن 38 | RB5 — Port B bit 5 (interrupt-on-change) |
| پن 39 | RB6/PGC — Port B bit 6 / ICSP clock (ICD) |
| پن 40 | RB7/PGD — Port B bit 7 / ICSP data (ICD) |
| پن 41 | NC — Not connected (per datasheet TQFP-44 layout) |
| پن 42 | NC — Not connected (per datasheet TQFP-44 layout) |
| پن 43 | NC — Not connected (per datasheet TQFP-44 layout) |
| پن 44 | NC — Not connected (per datasheet TQFP-44 layout) |
عام استعمالات
PIC16F874-04E/PT کے لیے موزوں ہے 6 ایپلیکیشنs: Automotive Body Control Modules, Industrial Sensor Conditioning, Low-Cost PWM Motor Control, Battery Management Front-Ends, Small Appliance Control Boards, HVAC and Climate Control.
Automotive Body Control Modules
The PIC16F874-04E/PT's automotive -40C to +125C temperature grade and 4 MHz operation make it well suited for body-control ECUs that switch lighting, mirrors, and seat motors. Its 33 I/O pins directly drive relay coils and MOSFET gates through the CCP/PWM modules, while the 10-bit ADC reads battery voltage and thermistor inputs without an external ADC IC. Compared with newer PIC18 parts, the PIC16F874-04E/PT offers proven long-term availability in automotive service channels. Pair with the LM7805 5V regulator and TVS diode for load-dump protection; the 4-5.5V supply range tolerates cranking transients. The 7KB Flash holds typical body-control firmware, and ICSP allows field reflash via the OBD-II connector.
تجویز کردہ
Industrial Sensor Conditioning
The PIC16F874-04E/PT's 8-channel 10-bit ADC, 33 I/O pins, and USART/SPI/I2C peripherals make it a strong fit for industrial 4-20mA sensor conditioning boards. Its 200 ns instruction cycle is fast enough for 100 Hz closed-loop control loops, and the 7 KB Flash accommodates PID + linearization firmware. Compared with dedicated ADC chips, the integrated ADC eliminates BOM cost while keeping the BOM under USD 5 in 1k volumes. The automotive temperature grade also supports factory-floor installations without de-rating. Use the MSSP module to interface to SPI-based digital sensors and the USART to drive RS-485 transceivers for Modbus RTU links.
تجویز کردہ
Low-Cost PWM Motor Control
The PIC16F874-04E/PT's CCP module generates precise PWM for brushed DC and small BLDC motor control up to 25 kHz. The 16-bit timer provides 100 ns resolution at 4 MHz oscillator, enough for hobby-grade servo and small fan speed control. The automotive temperature grade suits motor control in dashboard ventilation and seat-position actuators. Compared with dedicated motor-driver ASICs, the PIC16F874-04E/PT adds software-configurable control curves and ICSP field-tuning. Drive N-channel MOSFET half-bridges from Port C pins, with the ADC reading back current-sense shunt voltage for closed-loop torque control.
تجویز کردہ
Battery Management Front-Ends
The PIC16F874-04E/PT's 8-channel ADC multiplexes voltage and current measurements for low-cell-count battery management front-ends (4-8S Li-ion packs). Its nanoWatt sleep current keeps quiescent draw low for long-shelf-life packs. The 7KB Flash fits basic state-of-charge algorithms and SMBus communication over the MSSP I2C peripheral. The automotive -40C to +125C grade handles under-hood and outdoor installations. Pair with a balancing FET array and CHG/DCHG MOSFETs; the PIC16F874 reads cell voltages through the ADC and controls balancing via GPIO. ICSP supports firmware updates as battery chemistries evolve.
تجویز کردہ
Small Appliance Control Boards
The PIC16F874-04E/PT integrates USART, SPI, I2C, ADC, and PWM in a single TQFP-44, making it ideal for small appliance mainboards like coffee machines, induction cooktops, and air purifiers. Its 4 MHz grade keeps EMI low while still handling touch-button scanning and PID temperature control. The 33 I/O pins drive relay banks, seven-segment displays, and buzzer PWM simultaneously without external logic. Compared with newer Cortex-M0 parts, the PIC16F874-04E/PT offers simpler development (35-instruction RISC) and lower tool-chain cost. Use the 16-bit timer for precise cooking-cycle timing and the ADC for NTC thermistor temperature sensing.
تجویز کردہ
HVAC and Climate Control
The PIC16F874-04E/PT's automotive temperature grade and 4 MHz operation are well matched for HVAC damper controllers, fan-speed regulators, and thermostat mainboards. Its 10-bit ADC reads thermistor and humidity sensor inputs at 0.5C resolution, while the CCP module drives TRIAC firing pulses for AC line loads. The 7KB Flash fits PID climate-control firmware, and the USART supports Modbus or BACnet links to a building-management system. Compared with PLCs, the PIC16F874-04E/PT reduces per-node cost to under USD 10 in 1k volumes. ICSP enables field firmware updates without disassembly.
تجویز کردہ
تجویز کردہ پروڈکٹس کا خلاصہ
کے لیے انجینئرنگ ریفرنس ڈیٹا PIC16F874-04E/PT — موازنہ، ڈیزائن رہنمائی، اور تعمیل کی معلومات۔
انتخاب کی گائیڈ
متبادلات کے ساتھ موازنہ
| پیرامیٹر | یہ پروڈکٹ | PIC16F874-04I/PT | PIC16F874T-04E/PT | PIC16F877-04/PT | PIC16F874-04/PQ | PIC16F874-04E/PQ |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | TQFP-44 (PT) | TQFP-44 (PT) - same | TQFP-44 (PT) - same | TQFP-44 (PT) - same | TQFP-44 (PQ) - same family, different outline | TQFP-44 (PQ) - same family, different outline |
| Program Memory | 7 KB Flash | 7 KB Flash | 7 KB Flash | 14 KB Flash (upgrade) | 7 KB Flash | 7 KB Flash |
| Clock Speed (max) | 4 MHz | 4 MHz | 4 MHz | 4 MHz | 4 MHz | 4 MHz |
| RAM | 192 bytes | 192 bytes | 192 bytes | 368 bytes | 192 bytes | 192 bytes |
| I/O Pins | 33 | 33 | 33 | 33 | 33 | 33 |
| Operating Temperature | -40C to +125C (automotive) | -40C to +85C (industrial) | -40C to +125C (automotive) | -40C to +85C (industrial, base) | 0C to +70C (commercial) | -40C to +125C (automotive) |
| ADC | 10-bit, 8 channels | 10-bit, 8 channels | 10-bit, 8 channels | 10-bit, 8 channels | 10-bit, 8 channels | 10-bit, 8 channels |
| Lifecycle Status | Active | Active | Active | Active | Active | Active |
اہم امتیازی خصوصیات
- Automotive temperature grade in same TQFP-44 footprint (بمقابلہPIC16F874-04I/PT)
- Identical peripheral set to PIC16F877 with smaller Flash (بمقابلہPIC16F877-04/PT)
- TQFP-44 (PT) package vs MQFP-44 (PQ) variant (بمقابلہPIC16F874-04E/PQ)
ڈیزائن نوٹس
Place a 100 nF ceramic decoupling capacitor as close as possible to each VDD pin (pins 11 and 32) and a single 10 uF bulk tantalum or aluminum electrolytic capacitor near the MCU. The PIC16F874-04E/PT draws approximately 5 mA active at 4 MHz with all peripherals enabled, so the regulator must supply at least 50 mA headroom. Brown-out Reset (BOR) is enabled by configuration bit and prevents code corruption at supply voltages below the BOR threshold (configurable 2.5 V to 4.5 V). For 12 V automotive rails, place a TVS diode and 5 V LDO before the MCU to survive load-dump transients up to 40 V.
Keep the oscillator traces (OSC1 pin 13, OSC2 pin 14) short and surround them with a ground pour to reduce EMI. The TQFP-44 (PT) package has a thermal pad area but no electrical pad; the central die flag is not connected to ground on this part. Place the ICSP connector (RB6/PGC = pin 39, RB7/PGD = pin 40) on the board edge so the production line can program the firmware without disassembling the enclosure. Add 4.7 kohm pull-ups on SDA (pin 23) and SCL (pin 18) for I2C bus integrity even if the bus is unused.
Do not leave the MCLR pin (pin 1) floating - tie it to VDD through a 10 kohm pull-up resistor or use a reset supervisor IC for noisy automotive environments. Do not exceed the 5.5 V absolute maximum on any I/O pin; clamp inductive loads (relay coils, solenoids) with flyback diodes. When using the internal RC oscillator, calibrate the OSCTUNE register to compensate for temperature drift. Configuration bits must be set explicitly - an unprogrammed configuration word enables the watchdog timer by default, which can cause unexpected resets. The CCP1 module is on RC2 (pin 17) only - do not remap it to another pin on the PIC16F874.
تعمیل کی معلومات
RoHS and REACH compliant per Microchip product page. Lead-free matte-tin finish. AEC-Q100 not formally qualified but automotive temperature grade (-40C to +125C) per Microchip part numbering convention. Halogen-free status not explicitly stated in the verified data.
