PIC16LF777-I/PT - 14KB Flash 8-bit MCU, 44-TQFP | Microchip
MPN: PIC16LF777-I/PT ✓ Hoạt độngPIC16LF777-I/PT Tóm tắt
A microcontroller (MCU) is an integrated circuit that combines a CPU core, program memory, working RAM, and programmable peripherals on a single die. The PIC16LF family belongs to Microchip's mid-range 8-bit PIC architecture family, sitting between the baseline PIC10/12/16 and the high-performance PIC18/dsPIC families. PIC MCUs use a Harvard RISC architecture with separate program and data buses and a small instruction set (35 instructions in the mid-range family), making them easy to program while delivering deterministic real-time performance.
The PIC16LF777 integrates 14 channels of 10-bit Analog-to-Digital conversion (ADC), three timers (Timer0, Timer1, Timer2), two Capture/Compare/PWM (CCP) modules, an Enhanced Capture/Compare/PWM (ECCP) module, a USART with addressable SPI/I2C support, and a 10-bit ADC shared with the comparator module. The 36 general-purpose I/O pins are organized across five ports (PORTA-PORTE) with individual bit-direction control, supporting direct LED drive and 5V-tolerant inputs. The nanoWatt technology extends battery life by offering multiple power-managed modes including Run, Idle, and Sleep.
This device is designed for embedded applications requiring a balance of analog and digital peripherals, USB connectivity (via external transceiver), and low power consumption. The 10-bit ADC with 14 channels enables multi-sensor acquisition, while the ECCP module supports bridge-driver PWM and half/full-bridge control for motor and power-conversion applications.
Typical applications include industrial control systems, motor control boards, sensor interfaces, battery-powered instruments, and consumer appliances. The wide operating voltage (2V to 5.5V) makes it suitable for both 3.3V and 5V system designs, while the low-power Sleep mode extends battery life in remote or portable deployments.
When designing with the PIC16LF777, allocate adequate decoupling on VDD/AVDD/VDDCORE pins and follow Microchip's analog ground layout recommendations to achieve full ADC performance. The 44-pin TQFP package provides ample I/O for complex systems; confirm pin assignments using MPLAB X IDE and the device datasheet before finalizing your PCB layout.
This page synthesizes distributor pricing, drop-in PIC alternatives, and practical design notes not found in the manufacturer datasheet alone.
Bộ thay thế dễ dàng lắp đặt cho PIC16LF777-I/PT — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với PIC16LF777-I/PT (cùng hình factor và footprint) — khác nhau ở ADC, Package, Communication, Core Architecture, Timers.
PIC16F777-I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16LF747-I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16LF18877-I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16LF1947-I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16LF1934-I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16LF777-I/PT Tỷ lệ tối đa & tính chất điện
| Core Architecture | PIC16 (8-bit) |
| Program Memory | 14 KB Flash (8K x 14 words) |
| RAM | 368 bytes |
| EEPROM | 256 bytes |
| Maximum CPU Speed | 20 MHz (10 MIPS) |
| Instruction Execution Time | 200 ns at 20 MHz |
| Supply Voltage Range | 2 V to 5.5 V |
| I/O Pins | 36 |
| ADC | 14-channel, 10-bit |
| Timers | 3 (Timer0, Timer1, Timer2) |
| CCP/ECCP Modules | 2 CCP + 1 ECCP |
| Communication Peripherals | AUSART (Addressable USART), MSSP (SPI/I2C) |
| Khoảng nhiệt độ hoạt động | -40 C to +85 C (industrial) |
| Hộp | 44-TQFP (10x10 mm) |
| Kiểu lắp đặt | Surface Mount |
| Cấp MSL | 3 (168 hours) |
| Trạng thái RoHS | Compliant |
| Lead-Free / Halogen-Free | Yes / Yes |
Cấu hình chân PIC16LF777-I/PT
| Chân 1 | MCLR — Master Clear (Reset) input, active low |
| Chân 2 | RA0/AN0 — PORTA bit 0 / Analog input 0 |
| Chân 3 | RA1/AN1 — PORTA bit 1 / Analog input 1 |
| Chân 4 | RA2/AN2 — PORTA bit 2 / Analog input 2 |
| Chân 5 | RA3/AN3/VREF+ — PORTA bit 3 / Analog input 3 / ADC VREF+ |
| Chân 6 | RA4/AN4 — PORTA bit 4 / Analog input 4 |
| Chân 7 | RA5/AN5/SS — PORTA bit 5 / Analog input 5 / SPI Slave Select |
| Chân 8 | RE0/RD — PORTE bit 0 / Read control for PSP |
| Chân 9 | RE1/WR — PORTE bit 1 / Write control for PSP |
| Chân 10 | RE2/CS — PORTE bit 2 / Chip Select for PSP |
| Chân 11 | VDD — Digital supply voltage (2V to 5.5V) |
| Chân 12 | VSS — Digital ground |
| Chân 13 | OSC1/CLKI — Crystal oscillator input / external clock in |
| Chân 14 | OSC2/CLKO — Crystal oscillator output / clock out |
| Chân 15 | RC0/T1OSO/T1CKI — PORTC bit 0 / Timer1 oscillator output / Timer1 clock input |
| Chân 16 | RC1/T1OSI/CCP2 — PORTC bit 1 / Timer1 oscillator input / CCP2 |
| Chân 17 | RC2/CCP1 — PORTC bit 2 / CCP1 |
| Chân 18 | RC3/SCK/SCL — PORTC bit 3 / SPI clock / I2C clock |
| Chân 19 | RD0/PSP0 — PORTD bit 0 / Parallel Slave Port bit 0 |
| Chân 20 | RD1/PSP1 — PORTD bit 1 / Parallel Slave Port bit 1 |
| Chân 21 | RD2/PSP2 — PORTD bit 2 / Parallel Slave Port bit 2 |
| Chân 22 | RD3/PSP3 — PORTD bit 3 / Parallel Slave Port bit 3 |
| Chân 23 | RC4/SDI/SDA — PORTC bit 4 / SPI data in / I2C data |
| Chân 24 | RC5/SDO — PORTC bit 5 / SPI data out |
| Chân 25 | RC6/TX/CK — PORTC bit 6 / USART TX / USART clock |
| Chân 26 | RC7/RX/DT — PORTC bit 7 / USART RX / USART data |
| Chân 27 | RD4/PSP4 — PORTD bit 4 / Parallel Slave Port bit 4 |
| Chân 28 | RD5/PSP5 — PORTD bit 5 / Parallel Slave Port bit 5 |
| Chân 29 | RD6/PSP6 — PORTD bit 6 / Parallel Slave Port bit 6 |
| Chân 30 | RD7/PSP7 — PORTD bit 7 / Parallel Slave Port bit 7 |
| Chân 31 | VSS — Digital ground |
| Chân 32 | VDD — Digital supply voltage (2V to 5.5V) |
| Chân 33 | RB0/INT — PORTB bit 0 / External interrupt |
| Chân 34 | RB1 — PORTB bit 1 |
| Chân 35 | RB2 — PORTB bit 2 |
| Chân 36 | RB3/PGM — PORTB bit 3 / Low-voltage programming |
| Chân 37 | RB4 — PORTB bit 4 |
| Chân 38 | RB5 — PORTB bit 5 |
| Chân 39 | RB6/PGC — PORTB bit 6 / ICSP clock |
| Chân 40 | RB7/PGD — PORTB bit 7 / ICSP data |
| Chân 41 | AVDD — Analog supply voltage |
| Chân 42 | AVSS — Analog ground |
| Chân 43 | AN6 — Analog input 6 |
| Chân 44 | AN7 — Analog input 7 |
Ứng dụng tiêu biểu
PIC16LF777-I/PT phù hợp cho 6 Áp dụngs: Industrial Motor Control, Battery-Powered Sensor Hubs, Home Appliance Control Boards, Automotive Body Electronics, Educational Development Platforms, Power Supply Monitoring and Control.
Industrial Motor Control
The PIC16LF777-I/PT's Enhanced CCP (ECCP) module delivers full-bridge and half-bridge PWM outputs with programmable dead-band control, while its three timers and 14-channel 10-bit ADC enable precise motor speed and current feedback. This makes it well-suited for driving small BLDC, brushed DC, or stepper motors via external MOSFET gate drivers. The 36 I/O pins provide ample headroom for encoder inputs, Hall sensors, and fault protection signals. Its wide 2V to 5.5V supply range supports both 3.3V and 5V motor-driver rails in industrial automation equipment such as conveyor controllers, valve actuators, and small-format robotics.
Được đề xuất
Battery-Powered Sensor Hubs
The PIC16LF777-I/PT's nanoWatt technology with multiple power-managed modes (Run, Idle, Sleep) and 2V minimum supply enables extended battery life in remote sensor deployments. The 14-channel 10-bit ADC accepts signals from temperature, light, humidity, or pressure sensors directly, while the MSSP peripheral drives SPI/I2C digital sensors. The 368-byte RAM and 14 KB Flash are sufficient for sensor-fusion algorithms and averaging routines. Typical deployments include wireless environmental monitors, IoT edge nodes, and handheld instrumentation where Sleep current of <1 uA preserves battery runtime over months.
Được đề xuất
Home Appliance Control Boards
The PIC16LF777-I/PT is widely used in white-goods control boards such as washing machines, dishwashers, and microwave ovens due to its robust 5V-tolerant I/O, 36 GPIO pins, and reliable Flash program memory. The ECCP module drives TRIAC-based AC loads for heater or motor elements, while the ADC reads thermistor inputs for temperature regulation. Industrial temperature range (-40C to +85C) ensures reliability in appliance thermal environments. The 44-TQFP package simplifies automated SMT assembly, lowering production cost for high-volume consumer goods.
Được đề xuất
Automotive Body Electronics
While the PIC16LF777 is not AEC-Q100 qualified, it is widely used in non-safety automotive body electronics such as interior lighting controllers, seat-position modules, and HVAC blend-door actuators where its 5V I/O tolerance, ECCP PWM, and ADC channels simplify the bill of materials. The wide operating temperature and robust peripheral set suit the under-dash environment. Designers targeting AEC-Q100 should select the PIC16F777-I/PT automotive-grade equivalent. The 44-TQFP package provides the I/O density needed for multi-channel actuator control without expanding PCB area.
Được đề xuất
Educational Development Platforms
Universities and training institutions favor the PIC16LF777-I/PT for embedded systems courses due to its mature toolchain (MPLAB X IDE, XC8 compiler), low cost, and the PIC architecture's deterministic 14-bit instruction set. The 44-TQFP package is breadboard-friendly via adapter boards, and the 36 I/O plus 14 ADC channels expose students to a representative mix of digital and analog interfacing. Curriculum projects include traffic-light controllers, line-following robots, digital thermometers, and PWM-driven servo motors. The LF variant's 2V operation also teaches low-power design principles.
Được đề xuất
Power Supply Monitoring and Control
The PIC16LF777-I/PT's 14-channel 10-bit ADC is well-suited to multi-rail power-supply monitoring in telecom and server backplane applications, while its USART drives communication with the supervisory host. The ECCP module generates switching-frequency PWM for digital potentiometers or fan-speed control. Industrial temperature rating ensures stable operation in rack-mounted equipment. Combined with a supervisor IC and a current-sense amplifier, the LF777 builds a compact, programmable power-management front end that reports voltage, current, and temperature over UART or I2C.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC16LF777-I/PT — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | PIC16F777-I/PT | PIC16LF747-I/PT | PIC16LF18877-I/PT | PIC16LF1947-I/PT | PIC16LF1934-I/PT |
|---|---|---|---|---|---|---|
| Package | 44-TQFP (10x10) | 44-TQFP (10x10) - same | 44-TQFP (10x10) - same | 44-TQFP (10x10) - same | 44-TQFP (10x10) - same | 44-TQFP (10x10) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory | 14 KB Flash | 14 KB Flash | 7 KB Flash (-50%) | 56 KB Flash (+300%) | 28 KB Flash (+100%) | 7 KB Flash (-50%) |
| RAM | 368 bytes | 368 bytes | 192 bytes | 4096 bytes | 2048 bytes | 256 bytes |
| Supply Voltage Range | 2 V to 5.5 V | 4 V to 5.5 V (no 2V operation) | 2 V to 5.5 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V |
| Maximum Clock Speed | 20 MHz | 20 MHz | 20 MHz | 32 MHz | 32 MHz | 32 MHz |
| ADC Channels | 14 x 10-bit | 14 x 10-bit | 14 x 10-bit | 24 x 10-bit (varies by package) | 17 x 10-bit | 11 x 10-bit |
| I/O Pins | 36 | 36 | 36 | 36 | 36 | 36 |
| ECCP Module | Yes | Yes | No | Yes (multiple PWM) | Yes (multiple PWM) | No |
| Unit Price (qty 1) | $8.42 | ~$8.20 | ~$7.10 | ~$3.50 | ~$3.90 | ~$2.80 |
Bảo phân biệt quan trọng
- 14 KB Flash with 2V-5.5V wide-voltage operation (vsPIC16LF747-I/PT)
- Enhanced CCP (ECCP) with full-bridge PWM and programmable dead-band (vsPIC16LF1934-I/PT)
- 36 I/O and 14 ADC channels in 44-TQFP (vsPIC16LF18877-I/PT)
- nanoWatt technology with multiple low-power modes (vsPIC16F777-I/PT)
Ghi chú thiết kế
Decouple the PIC16LF777-I/PT with a 100 nF ceramic capacitor placed within 5 mm of each VDD/AVDD pin and a bulk 10 uF tantalum or ceramic capacitor on the main supply rail. A separate analog ground (AVSS) tied to digital ground at a single point reduces ADC noise by 1-2 LSB. Estimated: at 20 MHz with all peripherals active, current draw is approximately 13 mA at 5V, so a 3.3V LDO rated at 100 mA is sufficient for typical designs.
Keep the analog signal traces short and isolated from digital switching lines; route the analog ground (AVSS) separately back to the regulator ground pin to avoid ground bounce coupling into the ADC. Place the 44-TQFP's exposed pad (if present on this package revision) on a copper pour connected to VSS. For crystal oscillator traces (OSC1/OSC2), keep them under 10 mm and guard them with a ground pour on both sides to suppress EMI.
Do not apply signals to PORTA analog-capable pins while the ADC is enabled without first configuring the pin as analog (default after POR); digital input contention can cause shoot-through and corrupt ADC readings. Always set the ADCON1 register at startup to configure AN0-AN7 as analog vs digital. A common debugging issue is forgetting to enable the ECCP module's PWM output via the TRIS register - the pin remains in input mode, and PWM appears absent.
When using the AUSART at high baud rates (above 115200), add a series 100 ohm resistor on the TX line and ensure the receiver RX pin has a 10 kohm pull-up to VDD. For I2C bus, select 4.7 kohm pull-ups at 100 kHz or 2.2 kohm at 400 kHz; the MSSP peripheral is fully open-drain, so external pull-ups are mandatory. MSSP SDA/SCL traces should be kept under 100 mm to avoid bus-capacitance violations.
Thông tin tuân thủ
RoHS compliant per Microchip product page. Not AEC-Q100 qualified - for automotive applications select PIC16F777-I/PT or a PIC16F193x variant with automotive grade.