PIC16LF77-I/ML - 8-bit MCU, 14KB Flash, 33 I/O, 44-QFN | Microchip
MPN: PIC16LF77-I/ML ✓ Hoạt độngPIC16LF77-I/ML Tóm tắt
An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, memory (Flash/ROM and RAM), and peripherals around an 8-bit data path. PIC microcontrollers use a Harvard RISC architecture with a 14-bit instruction word optimized for deterministic single-cycle execution. Within the broader taxonomy, PIC16F7x devices sit in the PIC16 mid-range family, which is itself a sub-family of Microchip's 8-bit PIC microcontroller portfolio (PIC10/12/16/18) under the wider class of embedded microcontrollers and semiconductors.
Key features of the PIC16LF77-I/ML include 14KB of self-programmable Flash program memory, 368 bytes of data RAM, a 10-bit successive-approximation ADC with up to 8 channels, three timer/counter modules, a synchronous serial port (SSP) supporting SPI and I2C, a USART for asynchronous serial communication, and a parallel slave port. The device operates across an industrial temperature range of -40C to +85C and supports 33 digital I/O pins, allowing direct interfacing with sensors, keypads, displays, and actuators.
The architecture combines a high-performance 14-bit RISC CPU with a 200 ns instruction cycle at 20 MHz oscillator input, Harvard bus architecture for simultaneous instruction and data fetches, and a wide operating voltage range that extends down to 2.0V. Integrated peripherals - ADC, comparators, PWM, and capture/compare modules - reduce total BOM count and PCB area in mixed-signal embedded systems.
Typical applications include industrial control and automation (sensor interfacing, motor drive logic), low-power consumer electronics (appliance controllers, battery-powered instruments), automotive body and chassis subsystems (HVAC control, instrument clusters), medical monitoring devices (portable measurement instruments), and general-purpose embedded products requiring 8-bit deterministic control. The wide I/O count and rich peripheral set also suit data acquisition front-ends and human-machine interface (HMI) panels.
When designing with the PIC16LF77-I/ML, ensure the QFN thermal pad is properly soldered to a sufficient copper pour for heat dissipation, place the decoupling capacitor pair (100 nF + 10 uF) within 5 mm of the VDD pins, and reserve MCLR pin handling with the recommended 10 kohm pull-up. Programming/debugging is supported via ICSP using MPLAB tools and the PICkit or ICD programmers.
This page synthesizes distributor stock and pricing from authorized channels, pin-compatible drop-in alternatives in the same 44-QFN footprint, and practical design notes - information engineers need that the bare datasheet does not aggregate.
Bộ thay thế dễ dàng lắp đặt cho PIC16LF77-I/ML — 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 PIC16LF77-I/ML (cùng hình factor và footprint) — khác nhau ở Package, ADC, Timers, I/O Pins, Capture/Compare/PWM.
PIC16LF777-I/ML
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16F77-I/ML
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16LF74-I/ML
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16LF767-I/ML
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC16LF727-I/MV
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC16LF77-I/ML Tỷ lệ tối đa & tính chất điện
| Product Type | 8-bit Microcontroller (MCU) |
| Core Architecture | PIC16 RISC, 14-bit instruction word |
| Family | PIC16F7x |
| Program Memory (Flash) | 14 KB |
| Data RAM | 368 bytes |
| Maximum I/O Pins | 33 |
| ADC | 10-bit, up to 8 channels |
| Timers | 3 (Timer0, Timer1, Timer2) |
| Serial Interfaces | USART, SSP (SPI / I2C) |
| Parallel Slave Port | Yes |
| Operating Voltage | 2.0 V to 5.5 V (LF variant) |
| Tần số xung maksimum | 20 MHz (200 ns instruction cycle) |
| Nhiệt độ hoạt động | -40C to +85C (Industrial) |
| Hộp | 44-pin QFN (ML) 8x8 mm |
| Kiểu lắp đặt | Surface Mount |
| Trạng thái RoHS | Compliant |
| Lead-Free | Yes |
Cấu hình chân PIC16LF77-I/ML
| Chân 1 | MCLR — Master Clear (reset) input, active low; connect to VDD via 10 kohm pull-up |
| 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 positive reference |
| Chân 6 | RA4/T0CKI — PORTA bit 4 / Timer0 clock input |
| Chân 7 | RA5/AN4/SS — PORTA bit 5 / Analog input 4 / SPI slave select |
| Chân 8 | RE0/RD/AN5 — PORTE bit 0 / Parallel slave port read / Analog input 5 |
| Chân 9 | RE1/WR/AN6 — PORTE bit 1 / Parallel slave port write / Analog input 6 |
| Chân 10 | RE2/CS/AN7 — PORTE bit 2 / Parallel slave port chip select / Analog input 7 |
| Chân 11 | VDD — Positive supply voltage (2.0 V to 5.5 V) |
| Chân 12 | VSS — Ground reference |
| Chân 13 | OSC1/CLKI — Oscillator input / external clock input |
| Chân 14 | OSC2/CLKO — Oscillator output / clock output |
| 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 output |
| Chân 17 | RC2/CCP1 — PORTC bit 2 / CCP1 output |
| Chân 18 | RC3/SCK/SCL — PORTC bit 3 / SPI clock / I2C clock |
| Chân 19 | RD0/PSP0 — PORTD bit 0 / Parallel slave port data bit 0 |
| Chân 20 | RD1/PSP1 — PORTD bit 1 / Parallel slave port data bit 1 |
| Chân 21 | RD2/PSP2 — PORTD bit 2 / Parallel slave port data bit 2 |
| Chân 22 | RD3/PSP3 — PORTD bit 3 / Parallel slave port data 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 async transmit / sync clock |
| Chân 26 | RC7/RX/DT — PORTC bit 7 / USART async receive / sync data |
| Chân 27 | RD4/PSP4 — PORTD bit 4 / Parallel slave port data bit 4 |
| Chân 28 | RD5/PSP5 — PORTD bit 5 / Parallel slave port data bit 5 |
| Chân 29 | RD6/PSP6 — PORTD bit 6 / Parallel slave port data bit 6 |
| Chân 30 | RD7/PSP7 — PORTD bit 7 / Parallel slave port data bit 7 |
| Chân 31 | VSS — Ground reference |
| Chân 32 | VDD — Positive supply voltage (2.0 V to 5.5 V) |
| Chân 33 | RB0/INT — PORTB bit 0 / External interrupt input |
| Chân 34 | RB1 — PORTB bit 1 |
| Chân 35 | RB2 — PORTB bit 2 |
| Chân 36 | RB3/PGM — PORTB bit 3 / Low-voltage ICSP programming input |
| Chân 37 | RB4 — PORTB bit 4 |
| Chân 38 | RB5/PGM — PORTB bit 5 / Low-voltage ICSP programming input |
| Chân 39 | RB6/PGC — PORTB bit 6 / ICSP clock (programming/debug) |
| Chân 40 | RB7/PGD — PORTB bit 7 / ICSP data (programming/debug) |
| Chân 41 | NC — Not connected (per datasheet) |
| Chân 42 | NC — Not connected (per datasheet) |
| Chân 43 | NC — Not connected (per datasheet) |
| Chân 44 | NC — Not connected (per datasheet) |
Ứng dụng tiêu biểu
PIC16LF77-I/ML phù hợp cho 6 Áp dụngs: Industrial Sensor Monitoring, Battery-Powered Consumer Appliance, Automotive Body and HVAC Control, Portable Medical Monitoring Device, Human-Machine Interface (HMI) Panel, Data Acquisition Front End.
Industrial Sensor Monitoring
The PIC16LF77-I/ML's 10-bit ADC with 8 channels and 33 I/O pins make it ideal for industrial sensor monitoring nodes that read multiple analog transducers (temperature, pressure, flow) and report back over UART or SPI. The 2.0 V minimum VDD supports 3.3 V operation common in industrial field instrumentation, while the 14 KB Flash accommodates calibration tables and linearization firmware. Placed on a sensor interface board with a 4-20 mA loop driver or RS-485 transceiver, the MCU performs signal conditioning and protocol framing deterministically at 5 MIPS. Its wide -40C to +85C industrial temperature range matches factory floor environments without derating.
Được đề xuất
Battery-Powered Consumer Appliance
The LF (low-power) silicon process gives the PIC16LF77-I/ML a sleep current in the microamp range while retaining the full 14 KB Flash and 33 I/O of the F77 family, enabling years of battery life in portable appliances such as handheld meters or remote controls. Operating down to 2.0 V extends usable battery life from a 3 V coin cell below 10% remaining capacity. The integrated 10-bit ADC monitors battery voltage and sensor inputs without external components. Combined with a low-dropout regulator and a low-quiescent sensor, the MCU provides deterministic control for keypad scanning, display driving, and wireless transmit scheduling via SPI-attached radio.
Được đề xuất
Automotive Body and HVAC Control
Automotive body controllers and HVAC modules use the PIC16LF77-I/ML for fan-speed PWM control, temperature sensing, and switch-matrix input handling. The 33 I/O pins support direct connection to a keypad/button matrix, LED drivers, and BLDC fan tachometer inputs, while the 14 KB Flash holds HVAC state-machine firmware. Operating up to 5.5 V tolerates the 12 V automotive rail after local regulation, and the -40C to +85C industrial range covers cabin environments. The parallel slave port enables connection to a host ECU for shared-display data, and the 10-bit ADC reads multiple thermistors and potentiometers for setpoint control.
Được đề xuất
Portable Medical Monitoring Device
The PIC16LF77-I/ML fits portable medical monitors (pulse oximeters, glucose meters, digital thermometers) where low-voltage operation, deterministic control, and reliable Flash storage of calibration data are critical. The 10-bit ADC captures amplified photodiode or electrochemical-sensor signals, and 14 KB Flash stores patient-record buffers and look-up tables for non-linear sensor compensation. The wide operating voltage (2.0-5.5 V) supports direct Li-ion battery connection with a simple LDO, while the low-power sleep modes extend battery life between measurements. USART and SSP peripherals link to BLE or USB-CDC modules for data upload to a clinician's dashboard.
Được đề xuất
Human-Machine Interface (HMI) Panel
The PIC16LF77-I/ML drives small HMI panels combining character LCDs, seven-segment displays, and matrix keypads in industrial equipment. With 33 I/O pins it directly multiplexes up to a 4x5 keypad and 8-digit seven-segment display without external I/O expanders, while the parallel slave port allows a host processor to update display contents via a high-speed 8-bit bus. The 14 KB Flash holds the menu navigation and debouncing logic, and the SSP peripheral drives SPI-attached graphical or character OLEDs. The industrial temperature rating makes it suitable for factory-floor operator panels.
Được đề xuất
Data Acquisition Front End
The PIC16LF77-I/ML acts as a low-cost data-acquisition front end in test-and-measurement systems, scanning up to 8 analog channels with its 10-bit ADC, buffering samples in 368 B RAM, and streaming them out via USART to a PC or higher-tier processor. The 20 MHz clock enables sampling rates up to ~50 kSPS aggregate, sufficient for low-bandwidth instrumentation. The wide 2.0-5.5 V operating range simplifies dual-supply analog designs, and the integrated SSP supports SPI-attached external ADCs when higher resolution is required. Industrial temperature rating and the 44-QFN's compact footprint suit dense multi-channel DAQ boards.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC16LF77-I/ML — 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 | PIC16LF777-I/ML | PIC16F77-I/ML | PIC16LF74-I/ML | PIC16LF767-I/ML | PIC16LF727-I/MV |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 44-QFN (ML) 8x8 mm | 44-QFN (ML) - same | 44-QFN (ML) - same | 44-QFN (ML) - same | 44-QFN (ML) - same | 44-QFN (MV) - same footprint family |
| Program Flash | 14 KB | 14 KB | 14 KB | 7 KB (-50%) | 14 KB | 14 KB |
| Data RAM | 368 bytes | 368 bytes | 368 bytes | 192 bytes (-48%) | 368 bytes | 368 bytes |
| I/O Pins | 33 | 33 | 33 | 33 | 36 | 36 |
| Operating Voltage | 2.0 V to 5.5 V | 2.0 V to 5.5 V | 4.0 V to 5.5 V (no LF) | 2.0 V to 5.5 V | 2.0 V to 5.5 V | 1.8 V to 3.6 V |
| Max Clock | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 10 MHz | 32 MHz (XLP) |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
Bảo phân biệt quan trọng
- Low-voltage 2.0 V minimum VDD enables battery-powered 3.3 V designs (vsPIC16F77-I/ML)
- Same 44-QFN footprint as enhanced successors for drop-in upgradability (vsPIC16LF727-I/MV)
- 33 I/O pins with parallel slave port for host-MCU bus interfaces (vsPIC16LF767-I/ML)
Ghi chú thiết kế
The PIC16LF77-I/ML accepts 2.0 V to 5.5 V on VDD (pins 11 and 32) with VSS on pins 12 and 31. Place a 100 nF decoupling capacitor within 5 mm of each VDD pin and a bulk 10 uF tantalum or ceramic at the board supply entry. For analog reference stability, add a 10 uF + 100 nF pair at AVdd/AVss if the part is configured for separate analog supply. Inductive loads driven by I/O pins require flyback diodes to prevent latch-up; high-side MOSFET switches should include gate-source pull-downs to define the off-state.
The 44-pin QFN (ML) package has an exposed thermal pad (EP) that must be soldered to a copper pour on the PCB for heat dissipation. At maximum 20 MHz operation with all 33 I/O pins toggling at 50% duty, the MCU dissipates approximately 100 mW - well within QFN ratings - but a thermal pad pour of at least 25 mm^2 on top and inner PCB layers is recommended to keep junction temperature below 70C at 25C ambient. Without the thermal pad connection, theta_JA rises sharply and long-term reliability degrades.
Route the oscillator traces (OSC1/OSC2) as short as possible and guard them with a ground pour to minimize EMI pickup. Keep the MCLR trace short and isolate it from switching signal traces; place the 10 kohm pull-up resistor within 3 mm of the MCLR pin. If using ICSP for in-circuit programming, dedicate pins RB6/PGC and RB7/PGD in your schematic with a 4.7 kohm series resistor on each line to allow programming without removing the MCU from board. Use a star-ground topology with separate analog and digital grounds joined at a single point near the MCU's VSS pin.
Do not leave the MCLR pin floating - even brief voltage spikes below Vih can trigger spurious resets. Always populate the recommended 10 kohm pull-up to VDD. The LF (low-voltage) variants only operate down to 2.0 V; do not substitute an LF part in a design that needs 5 V tolerance beyond VDD+0.3 V on any pin, as I/O pin voltage tolerance is VDD-referenced. Finally, ensure the CONFIG words are set correctly for the oscillator mode (HS, XT, LP, RC) to match your crystal or resonator - a mismatch causes the device to fail to start or run at the wrong frequency.
Thông tin tuân thủ
RoHS and lead-free status per Microchip product page; AEC-Q100 automotive qualification not listed for the I (industrial) grade. For automotive applications requiring AEC-Q100, consider PIC16F77-E/ML or PIC16LF77-I/ML variants qualified to automotive standards - confirm with Microchip.