PIC16LF73T-I/ML - 8-bit 20MHz 7KB Flash MCU 28-QFN | Microchip
MPN: PIC16LF73T-I/ML ✓ Hoạt độngPIC16LF73T-I/ML Tóm tắt
An 8-bit microcontroller is a single-chip computer built around an 8-bit data path, an ALU, on-board program memory (FLASH/ROM), data memory (RAM), and a set of peripheral blocks (timers, ADC, communication ports). The PIC16 family uses a RISC instruction set with a fixed instruction width (14-bit opcode here), which simplifies decoding and enables deterministic interrupt latency. Within the broader hierarchy, a PIC MCU sits under: microcontroller -> embedded processor -> semiconductor IC. The 'LF' suffix indicates an extended low-voltage core, supporting operation from 2.5 V to 5.5 V, and the 'T' in the order code denotes the Tape & Reel shipping form.
Key features include a 5-channel 8-bit ADC with additional 8-bit timer resources, two capture/compare/PWM modules, a USART for asynchronous serial, an MSSP for SPI/I2C, and 22 I/O pins to interface with sensors, switches, displays, and actuators. The FLASH program memory is in-circuit programmable, supporting field firmware updates. The instruction cycle is 200 ns at 20 MHz (one instruction per four oscillator cycles), and the device includes standard power-saving and watchdog timer blocks.
The PIC16LF73T-I/ML is built on Microchip's mature PIC16 enhanced mid-range architecture, which adds interrupt context saving and a deeper hardware stack relative to the baseline PIC16C5X series. The 28-QFN package provides a compact footprint and a low thermal-resistance path through the exposed pad (EP), making it suitable for space-constrained designs that still need efficient heat dissipation when the ADC and I/O are heavily loaded.
Typical applications include low-power industrial sensor interfaces, battery-powered handheld instruments, automotive body and convenience modules (where the LF core's wide voltage range helps), appliance control boards, and consumer white-goods user-interface controllers. The integrated USART and MSSP make it a practical host for sensor, EEPROM, and display peripherals.
When designing with this part, place a 0.1 µF decoupling capacitor on VDD as close to the pin as possible, and use the exposed pad as the main thermal/ground return on a multi-layer board with adequate copper pours. In-circuit serial programming (ICSP) requires careful trace routing to keep MCLR/VPP and RB6/RB7 away from switching nodes to avoid programming glitches.
This page synthesizes distributor pricing (DigiKey, Mouser), verified drop-in same-package alternatives from the PIC16F73 family, and practical PCB/programming notes that complement the Microchip datasheet for engineers selecting an 8-bit MCU.
Bộ thay thế dễ dàng lắp đặt cho PIC16LF73T-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 PIC16LF73T-I/ML (cùng hình factor và footprint) — khác nhau ở Package, Timers, ADC, Operating Temperature, Core Architecture.
PIC16F73T-I/ML
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16LF73-I/ML
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16LF737T-I/ML
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16LF72T-I/ML
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16LF723T-I/ML
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16LF723A-I/ML
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16LF1938T-I/ML
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Xem tài liệu →PIC16LF1902-I/ML
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Xem tài liệu →PIC16LF73T-I/ML Tỷ lệ tối đa & tính chất điện
| Core | PIC16 8-bit RISC |
| Instruction Set Width | 14-bit |
| Tần số xung maksimum | 20 MHz |
| Instruction Cycle Time | 200 ns at 20 MHz |
| Program Memory (FLASH) | 7 KB (4K x 14) |
| Data RAM | 192 bytes |
| Digital I/O Pins | 22 |
| ADC | 5 channels, 8-bit |
| Timers | 3 (Timer0, Timer1, Timer2) |
| CCP Modules | 2 (Capture / Compare / PWM) |
| Serial Interfaces | USART + MSSP (SPI / I2C) |
| Supply Voltage (LF core) | 2.5 V to 5.5 V |
| Nhiệt độ hoạt động | -40 C to +85 C (Industrial 'I') |
| Hộp | 28-pin QFN (6 x 6 mm) with Exposed Pad |
| Kiểu lắp đặt | Surface Mount |
| Shipping Form | Tape & Reel (T suffix) |
| Trạng thái RoHS | Compliant |
| Programming | ICSP (In-Circuit Serial Programming) |
Cấu hình chân PIC16LF73T-I/ML
| Chân 1 | MCLR/VPP — Master Clear (reset, active low) / ICSP programming voltage input |
| Chân 2 | RA0/AN0 — PORTA bit 0 / analog input channel 0 |
| Chân 3 | RA1/AN1 — PORTA bit 1 / analog input channel 1 |
| Chân 4 | RA2/AN2/VREF- — PORTA bit 2 / analog input 2 / ADC VREF- |
| Chân 5 | RA3/AN3/VREF+ — PORTA bit 3 / analog input 3 / ADC VREF+ |
| Chân 6 | RA4/T0CKI — PORTA bit 4 / Timer0 clock input (open-drain) |
| Chân 7 | RA5/AN4/SS — PORTA bit 5 / analog input 4 / SPI slave select |
| Chân 8 | VSS — Ground reference |
| Chân 9 | OSC1/CLKI — Oscillator crystal input / external clock in |
| Chân 10 | OSC2/CLKO — Oscillator crystal output / clock output |
| Chân 11 | RC0/T1OSO/T1CKI — PORTC bit 0 / Timer1 oscillator out / Timer1 clock in |
| Chân 12 | RC1/T1OSI/CCP2 — PORTC bit 1 / Timer1 oscillator in / CCP2 |
| Chân 13 | RC2/CCP1 — PORTC bit 2 / CCP1 (PWM output) |
| Chân 14 | RC3/SCK/SCL — PORTC bit 3 / SPI clock / I2C clock |
| Chân 15 | RC4/SDI/SDA — PORTC bit 4 / SPI data in / I2C data |
| Chân 16 | RC5/SDO — PORTC bit 5 / SPI data out |
| Chân 17 | RC6/TX/CK — PORTC bit 6 / USART TX / USART clock |
| Chân 18 | RC7/RX/DT — PORTC bit 7 / USART RX / USART data |
| Chân 19 | VSS — Ground reference |
| Chân 20 | VDD — Positive supply (2.5 V to 5.5 V) |
| Chân 21 | RB0/INT — PORTB bit 0 / external interrupt |
| Chân 22 | RB1 — PORTB bit 1 |
| Chân 23 | RB2 — PORTB bit 2 |
| Chân 24 | RB3/PGM — PORTB bit 3 / LVP programming |
| Chân 25 | RB4 — PORTB bit 4 |
| Chân 26 | RB5 — PORTB bit 5 |
| Chân 27 | RB6/PGC — PORTB bit 6 / ICSP clock |
| Chân 28 | RB7/PGD — PORTB bit 7 / ICSP data |
Ứng dụng tiêu biểu
PIC16LF73T-I/ML phù hợp cho 6 Áp dụngs: Battery-Powered Sensor Interface, Industrial Control and Appliance Board, Automotive Body and Convenience Module, Consumer User Interface Controller, Low-Cost Measurement Instrument, Educational and Hobby Electronics.
Battery-Powered Sensor Interface
The PIC16LF73T-I/ML fits battery-powered sensor-interface designs because its 'LF' core operates down to 2.5 V, allowing 2x AA cells to keep the MCU running until their ~2.7 V cutoff. Its 5-channel 8-bit ADC is sized for threshold detection on temperature, light, and contact sensors, while the 7 KB FLASH stores calibration tables and protocol stacks. The 192-byte SRAM is sufficient for small FIFO buffers over SPI or I2C. At 20 MHz and 3.3 V, the LF core typically draws single-digit mA, which is a strong fit for sleep-mode-dominated duty cycles. The QFN-28 package keeps the total PCB small enough for hand-held instruments.
Được đề xuất
Industrial Control and Appliance Board
The PIC16LF73T-I/ML is widely used on industrial and appliance control boards where the LF voltage range tolerates noisy 24 V-to-5 V rails and brown-out events. Its 22 digital I/O drive keys, relays, LEDs, and 7-segment displays directly, and the 2 CCP modules produce PWM for motor and valve control. The PIC16 RISC core provides deterministic interrupt latency, which is essential for line-frequency zero-crossing detection in TRIAC-based appliance designs. The exposed pad on the 28-QFN gives a low thermal path, important when outputs are sourcing high current into solenoids.
Được đề xuất
Automotive Body and Convenience Module
The PIC16LF73T-I/ML is a practical fit for automotive body and convenience modules (window lift, mirror control, interior lighting) that run off 12 V rails regulated to 5 V. The wide 2.5 V to 5.5 V supply range tolerates cranking transients and load-dump recovery. The PIC16 architecture's 35 single-word instructions simplify coding for fast event-driven loops over the CAN/LIN gateway. The 22 I/O are sufficient for switches, LEDs, and H-bridge enable signals. Note that AEC-Q100 grade is not explicitly claimed on the LF73 family page; for safety-critical modules, choose a Q-graded PIC16 variant.
Được đề xuất
Consumer User Interface Controller
The PIC16LF73T-I/ML drives consumer user-interface controllers for white goods, audio panels, and small appliances because its 22 I/O can scan keypads and drive LED or LCD readouts simultaneously. The integrated MSSP block runs SPI/I2C slaves for LED drivers and EEPROM, and the USART connects to a host MCU or Bluetooth module. The 7 KB FLASH fits menu state machines and button-debounce logic with room to spare. The exposed-pad QFN-28 helps the part survive the warm interior of an appliance when driving LEDs and relay coils.
Được đề xuất
Low-Cost Measurement Instrument
The PIC16LF73T-I/ML anchors low-cost bench and field measurement instruments (multimeters, light meters, simple data loggers) where its 5-channel 8-bit ADC, 22 I/O, and 7 KB FLASH are sufficient. The PIC16 architecture's deterministic timing supports 1-second sampling intervals using Timer1 with a 32.768 kHz crystal. The 192-byte RAM provides a small rolling buffer for the host to offload via USART. The exposed-pad QFN keeps the BOM footprint compact, and the LF voltage range lets the instrument run from 3 V button cells or USB-derived 5 V without re-design.
Được đề xuất
Educational and Hobby Electronics
The PIC16LF73T-I/ML is well suited for educational and hobby projects where its 35-instruction PIC16 RISC architecture offers a gentle learning curve, and the 28-QFN is small but still hand-solderable with the exposed pad. The 7 KB FLASH and 192 B RAM cover typical class projects (LED chasers, PWM motor control, I2C peripherals). ICSP reveals that PICkit programmers connect through MCLR, RB6, and RB7, which are easy to bring out on a development board. The LF voltage range lets students run the same board from 2x AA cells or a 5 V USB supply.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC16LF73T-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 | PIC16F73T-I/ML | PIC16LF73-I/ML | PIC16LF737T-I/ML | PIC16LF72T-I/ML | PIC16LF723T-I/ML |
|---|---|---|---|---|---|---|
| Package | 28-QFN (6x6) with EP | 28-QFN (6x6) with EP - same | 28-QFN (6x6) with EP - same | 28-QFN (6x6) with EP - same | 28-QFN (6x6) with EP - same | 28-QFN (6x6) with EP - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core / Supply Voltage | LF core, 2.5-5.5 V | F core, 4.0-5.5 V | LF core, 2.5-5.5 V | LF core, 2.5-5.5 V | LF core, 2.5-5.5 V | LF core, 2.5-5.5 V |
| FLASH Program Memory | 7 KB (4K x 14) | 7 KB | 7 KB | 7 KB | 3.5 KB (-50%) | 7 KB |
| Data RAM | 192 bytes | 192 bytes | 192 bytes | 256 bytes (+33%) | 128 bytes (-33%) | 192 bytes |
| Digital I/O | 22 | 22 | 22 | 25 | 22 | 11 (-50%) |
| Maximum Clock Frequency | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz |
| Operating Temperature | -40 C to +85 C (I) | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C |
Bảo phân biệt quan trọng
- Wide 2.5 V to 5.5 V supply range (LF core) (vsPIC16F73T-I/ML)
- Higher ADC resolution available in same footprint (vsPIC16LF737T-I/ML)
- Industrial -40 C to +85 C temperature grade (vsPIC16LF723T-I/ML)
Ghi chú thiết kế
Place a 0.1 µF ceramic decoupling capacitor on VDD (pin 20) as close to the package as possible, and bond the exposed pad (EP) directly to the ground plane with multiple thermal vias for a low-impedance return. The LF core operates from 2.5 V to 5.5 V; ensure the bulk supply (LDO or DC-DC post-filter) stays above 2.5 V under full load, including the brown-out threshold for the PIC16 BOR module.
Route ICSP signals (MCLR/VPP, PGC/RB6, PGD/RB7) away from switching nodes and high-current traces. Add a 10 kΩ pull-up on MCLR to VDD to keep the device out of reset during noisy power-up, and place a small signal diode or TVS on MCLR if the board is exposed to ESD during in-field firmware updates. The 28-QFN has a center EP that must be soldered; missing solder joints here cause thermal and electrical issues.
Do not exceed the absolute maximum VDD of 7.0 V; the LF core is robust only within 2.5 V to 5.5 V. Configure unused I/O as outputs and drive them low (not high-impedance inputs) to minimize supply current. The ADC's VREF+ and VREF- pins must be tied or left grounded per the datasheet to avoid floating-reference noise. When migrating from PIC16F73 to PIC16LF73, verify that any 4.0-5.5 V-only peripherals on your board still operate at 2.5 V.
The PIC16LF73T-I/ML's 20 MHz oscillator and 5-channel ADC are sensitive to noisy digital traces routed adjacent to VREF+ or analog inputs. Keep analog traces short, surround them with a ground pour, and add an RC filter on each analog input if the source is high-impedance. The MSSP's I2C lines need 4.7 kΩ to 10 kΩ pull-ups to VDD (4.7 kΩ for 400 kHz Fast Mode). Use Timer1 with a 32.768 kHz crystal for RTC and low-power sleep cycles.
Thông tin tuân thủ
RoHS compliance is consistent with distributor listings for /ML QFN packages. AEC-Q100 grade is not explicitly claimed on the standard PIC16LF73 family; select a Q-graded variant for automotive safety-critical applications.
