PIC16F777T-I/ML - 8-bit 20MHz 14KB Flash MCU 44-QFN | Microchip
MPN: PIC16F777T-I/ML ✓ نشطPIC16F777T-I/ML نظرة عامة
An 8-bit microcontroller (MCU) is a small, single-chip computer built around an 8-bit data path that integrates a CPU core, non-volatile program memory (FLASH or ROM), volatile working memory (SRAM), digital I/O, and on-chip peripherals such as timers, ADC, and serial interfaces. MCUs sit at the lowest level of the embedded computing hierarchy - below microprocessors - and are designed to run deterministic real-time control loops in products ranging from washing machines to industrial sensors. The PIC16F777 belongs to the mid-range PIC16 family, which Microchip introduced as a successor to the baseline PIC16C5X and PIC12CXXX lines, and which remains fully code-compatible with the PIC16C7X OTP family.
Key features that differentiate the PIC16F777T-I/ML include NanoWatt power management with multiple idle/sleep modes that drop supply current into the microamp range, an extended instruction set of 35 single-word instructions, 200 ns instruction execution, and an integrated ICD/ICSP programming/debug interface that allows in-circuit firmware updates without removing the part. The 44-pin QFN footprint also exposes a high pin count (36 I/O) suitable for human-interface or motor-control panels.
The architecture is a Harvard RISC design with separate program and data buses, a hardware multiplier, and an 8-level deep hardware stack. Combined with the 14-channel 10-bit ADC, this makes the part suitable for sensor-fusion and closed-loop control.
Typical applications include industrial control panels, HVAC thermostats, motor-control front-ends, automotive body electronics, white goods user-interface boards, and remote sensor nodes. Designers favor this family when deterministic real-time response, on-chip ADC, and code-protectable FLASH outweigh the need for a Cortex-M class core.
Designers should plan for an external 20 MHz resonator, a 100 nF decoupling cap on VDD, and a bulk 10 uF cap near the analog AVdd pin to keep ADC readings clean. Circuit placement near noisy switching stages should be avoided or shielded.
This page synthesizes verified distributor pricing, parametric drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.
بدائل مباشرة لـ PIC16F777T-I/ML — نفس الحزمة، متوافق دبوس بدبوس. تُستثنى القطع ذات الحزم المختلفة التي تتطلب تعديل PCB.
الطرازات في هذه السلسلة
طرازات من نفس السلسلة متوافقة تمامًا مع PIC16F777T-I/ML (نفس عامل الشكل والبصمة) — يختلف في ADC, Package, Timers, Communication, I/O Pins.
PIC16F777-I/ML
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←PIC16F76-I/ML
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←PIC16F767T-I/SS
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←PIC16F74T-I/PT
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←PIC16F767-I/ML
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←PIC16F77T-I/ML
✅ بديل مباشر📋 بديل مرجعي (غير موجود في الكتالوج)
PIC16F777T-I/ML الحدود القصوى والخصائص الكهربائية
| Core Architecture | 8-bit PIC16 RISC (Harvard) |
| Program Memory Type | FLASH |
| Program Memory Size | 14 KB (8K x 14 words) |
| RAM | 368 bytes |
| أقصى تردد للساعة | 20 MHz |
| Instruction Execution Time | 200 ns |
| Operating Voltage | 2.0 V to 5.5 V |
| I/O Pins | 36 |
| ADC | 14 channels, 10-bit |
| Timers | 3 |
| PWM Modules | 3 (2 CCP + 1 enhanced) |
| Communication | USART + MSSP (SPI / I2C) |
| العلبة | 44-QFN (8x8 mm) with EP |
| درجة حرارة التشغيل | -40 C to +85 C (Industrial) |
| نوع التركيب | Surface Mount |
| مستوى MSL | 3 (168 hours) |
| Lead-Free / RoHS | Yes / Compliant |
تكوين أطراف PIC16F777T-I/ML
| دبوس 1 | RA0/AN0 — PORTA bit 0 / Analog input channel 0 |
| دبوس 2 | RA1/AN1 — PORTA bit 1 / Analog input channel 1 |
| دبوس 3 | RA2/AN2/VREF- — PORTA bit 2 / Analog input 2 / ADC VREF- |
| دبوس 4 | RA3/AN3/VREF+ — PORTA bit 3 / Analog input 3 / ADC VREF+ |
| دبوس 5 | RA4/T0CKI — PORTA bit 4 / Timer0 clock input |
| دبوس 6 | RA5/AN4/SS — PORTA bit 5 / Analog input 4 / SPI slave select |
| دبوس 7 | RA6 — PORTA bit 6 |
| دبوس 8 | OSC1/CLKI — Crystal oscillator input / external clock in |
| دبوس 9 | OSC2/CLKO — Crystal oscillator output / clock out |
| دبوس 10 | RC0/T1OSO/T1CKI — PORTC bit 0 / Timer1 oscillator output / Timer1 clock |
| دبوس 11 | RC1/T1OSI/CCP2 — PORTC bit 1 / Timer1 oscillator input / CCP2 |
| دبوس 12 | RC2/CCP1 — PORTC bit 2 / CCP1 PWM output |
| دبوس 13 | RC3/SCK/SCL — PORTC bit 3 / SPI clock / I2C clock |
| دبوس 14 | RC4/SDI/SDA — PORTC bit 4 / SPI data in / I2C data |
| دبوس 15 | RC5/SDO — PORTC bit 5 / SPI data out |
| دبوس 16 | RC6/TX/CK — PORTC bit 6 / USART TX / USART clock |
| دبوس 17 | RC7/RX/DT — PORTC bit 7 / USART RX / USART data |
| دبوس 18 | RD0 — PORTD bit 0 |
| دبوس 19 | RD1 — PORTD bit 1 |
| دبوس 20 | RD2 — PORTD bit 2 |
| دبوس 21 | RD3 — PORTD bit 3 |
| دبوس 22 | RD4 — PORTD bit 4 |
| دبوس 23 | RD5/PSP0 — PORTD bit 5 / Parallel slave port bit 0 |
| دبوس 24 | RD6/PSP1 — PORTD bit 6 / Parallel slave port bit 1 |
| دبوس 25 | RD7/PSP2 — PORTD bit 7 / Parallel slave port bit 2 |
| دبوس 26 | VSS — Ground reference |
| دبوس 27 | VDD — Positive supply voltage |
| دبوس 28 | RE0/RD — PORTE bit 0 / Parallel slave port read control |
| دبوس 29 | RE1/WR — PORTE bit 1 / Parallel slave port write control |
| دبوس 30 | RE2/CS — PORTE bit 2 / Parallel slave port chip select |
| دبوس 31 | AVDD — Analog positive supply voltage |
| دبوس 32 | AVSS — Analog ground reference |
| دبوس 33 | RB0/INT — PORTB bit 0 / External interrupt |
| دبوس 34 | RB1 — PORTB bit 1 |
| دبوس 35 | RB2 — PORTB bit 2 |
| دبوس 36 | RB3/PGM — PORTB bit 3 / ICSP programming |
| دبوس 37 | RB4 — PORTB bit 4 |
| دبوس 38 | RB5/PGM — PORTB bit 5 / ICSP programming |
| دبوس 39 | RB6/PGC — PORTB bit 6 / ICSP clock |
| دبوس 40 | RB7/PGD — PORTB bit 7 / ICSP data |
| دبوس 41 | MCLR/VPP — Master clear reset / programming voltage |
| دبوس 42 | NC — Not connected (per datasheet) |
| دبوس 43 | NC — Not connected (per datasheet) |
| دبوس 44 | NC — Not connected (per datasheet) |
التطبيقات النموذجية
PIC16F777T-I/ML مناسب لـ 6 التطبيقs: Industrial Control Panel, HVAC Thermostat, Small Motor Control Front-End, White Goods User-Interface Board, Remote Sensor Node, Automotive Body Electronics (Non-Safety).
Industrial Control Panel
The PIC16F777T-I/ML fits industrial control panel designs because its 14 KB FLASH stores menu/setting firmware, 368 bytes of SRAM holds real-time I/O state, and 36 I/O pins drive keypads, LED indicators, character LCDs, and relay coils. The 14-channel 10-bit ADC reads potentiometers and analog sensors directly, replacing external ADC ICs and saving PCB area. Compared to a Cortex-M0+ design, the PIC16F777T offers lower cost (USD 7.40 at 100 pcs vs USD 2-3 for basic M0+), deterministic 200 ns interrupt latency, and Microchip's MPLAB X IDE ecosystem. Industrial -40C to +85C temperature grade handles factory-floor thermal stress without derating.
موصى به
HVAC Thermostat
The PIC16F777T-I/ML is well suited for HVAC thermostat main boards because its 14 KB FLASH supports scheduling firmware, 14 ADC channels read indoor/outdoor temperature sensors and humidity transducers, and 3 PWM outputs drive triac-fired fan coils. The 2.0-5.5V supply lets the MCU run directly from a 3.3V LDO fed by the 24VAC transformer tap, simplifying the analog front end. NanoWatt technology drops quiescent supply into the microamp range between button presses, satisfying Energy Star standby budgets.
موصى به
Small Motor Control Front-End
The PIC16F777T-I/ML fits small brushed-DC or stepper motor control front-ends because its 3 PWM modules and 2 CCP peripherals drive H-bridge MOSFETs with dead-band control, while the 14 ADC channels read back-EMF, current sense, and position feedback. Its 200 ns deterministic interrupt latency is critical for closed-loop torque control at PWM frequencies up to 50 kHz. The 44-QFN ML package exposes a thermal pad that handles the ~0.5W typical dissipation in motor PWM switching.
موصى به
White Goods User-Interface Board
The PIC16F777T-I/ML powers washing-machine, dishwasher, and refrigerator user-interface boards because its 36 I/O lines drive segment LCDs, capacitive touch buttons, status LEDs, and buzzer PWM. The 14 KB FLASH stores multi-region language strings, and the in-circuit serial programming (ICSP) interface allows end-of-line firmware customization. Industrial -40C to +85C temperature grade handles the kitchen-cabinet thermal envelope without performance degradation.
موصى به
Remote Sensor Node
The PIC16F777T-I/ML fits battery-powered remote sensor nodes because NanoWatt technology drops sleep current below 1 uA, the 14 ADC channels read multi-zone temperature/humidity/pressure transducers, and the 20 MHz core wakes fast enough to service sensor reads within milliseconds. The 14 KB FLASH holds TinyOS-lite or proprietary mesh stacks, while the 44-QFN package fits in a compact 8x8 mm footprint alongside a 2.4 GHz radio module.
موصى به
Automotive Body Electronics (Non-Safety)
The PIC16F777T-I/ML powers automotive body-electronics modules such as seat controllers, mirror adjusters, and interior lighting drivers because its 14 KB FLASH holds configurable mode firmware, 14 ADC channels read position-feedback pots, and 36 I/O drive multiple motors and lamps. The -40C to +85C industrial grade covers cabin thermal ranges, although underhood applications require the AEC-Q100 qualified PIC16F1xx family. Designers favor PIC16F for FOTA-less, deterministic-control body modules.
موصى به
ملخص المنتجات الموصى بها
بيانات مرجعية هندسية لـ PIC16F777T-I/ML — المقارنة وإرشادات التصميم ومعلومات الامتثال.
دليل الاختيار
المقارنة مع البدائل
| المعامل | هذا المنتج | PIC16F777-I/ML | PIC16F76-I/ML | PIC16F767T-I/SS | PIC16F77T-I/ML |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 44-QFN (8x8 mm) | 44-QFN (8x8 mm) - same | 44-QFN (8x8 mm) - same | 44-QFN (8x8 mm) - same | 44-QFN (8x8 mm) - same |
| FLASH | 14 KB (8K x 14) | 14 KB | 7 KB (-50%) | 7 KB (-50%) | 14 KB |
| RAM | 368 B | 368 B | 192 B (-48%) | 192 B (-48%) | 368 B |
| ADC | 14-ch, 10-bit | 14-ch, 10-bit | 8-ch, 8-bit | 14-ch, 10-bit | No ADC |
| I/O Pins | 36 | 36 | 22 | 36 | 33 |
| Core Speed | 20 MHz / 200 ns | 20 MHz / 200 ns | 20 MHz / 200 ns | 20 MHz / 200 ns | 20 MHz / 200 ns |
| Unit Price @ 100 | USD 7.40 | USD 7.20 | USD 6.50 | USD 6.80 | USD 7.10 |
أبرز الفروقات
- Largest FLASH in PIC16F7X family (مقابلPIC16F767T-I/SS)
- Same 44-QFN package across family (مقابلPIC16F74T-I/PT)
- 14-channel 10-bit ADC with NanoWatt sleep (مقابلPIC16F77T-I/ML)
ملاحظات التصميم
The PIC16F777T-I/ML accepts 2.0 V to 5.5 V on VDD and AVDD. Place a 100 nF ceramic decoupling capacitor within 5 mm of every VDD/AVDD pin and a 10 uF bulk capacitor near the analog AVdd pin. AVdd noise directly couples into ADC readings - keep analog and digital ground returns separate and join only at the IC exposed pad. Estimated: at 20 MHz active mode and 5 V supply, supply current is ~10 mA, well within a small LDO's rating.
Route the 20 MHz crystal traces (OSC1/OSC2) as short as possible (<5 mm), keep them above a continuous ground pour, and surround with a ground ring to suppress harmonic radiation. The exposed thermal pad on the 44-QFN (ML) package must be soldered to a 4 sq mm copper pad for thermal and electrical performance. Do not route high-speed digital signals under the analog AVdd traces or near the ADC inputs.
PIC16F777T-I/ML uses the RB6/RB7 pins (PGC and PGD) for ICSP programming and ICD debug - these must not be pulled to ground at start-up, otherwise the MCU enters programming mode and the application fails to boot. Also note that PORTB internal weak pull-ups can be overridden by external loads, so external 10 kohm pull-ups are recommended for production boards. The MCLR pin requires a 10 kohm pull-up to VDD and a 100 nF cap to ground for noise immunity.
معلومات الامتثال
RoHS compliant per Microchip product page. NOT AEC-Q100 qualified - select PIC16F1xx AEC-Q100 variants for automotive applications. Industrial -40C to +85C temperature grade.
