PIC16LF1789-I/ML - 28KB Flash 8-Bit MCU, 32MHz, 44-QFN | Microchip
MPN: PIC16LF1789-I/ML ✓ Hoạt độngPIC16LF1789-I/ML Tóm tắt
An 8-bit microcontroller (MCU) is a programmable processor that executes instructions on 8-bit-wide data buses, typically used for embedded control tasks where low power, deterministic response, and simple peripherals outweigh raw compute throughput. The PIC16LF1789 belongs to the eXtreme Low Power (XLP) family of PIC microcontrollers, positioning it within the broader 8-bit MCU -> microcontroller -> embedded processor taxonomy. The "LF" prefix designates a low-voltage variant (1.8V-3.6V), distinguishing it from the "F" version (2.3V-5.5V).
Key features include 28KB self-programmable Flash program memory, 32MHz internal oscillator, 12-bit ADC with up to 25 channels (depending on package), two 8-bit DACs, three operational amplifiers usable as analog front-ends, three Fast Comparators, and Programmable Switch-Mode Controller (PSMC) peripherals for advanced power-conversion timing. The device supports up to 36 I/O pins, hardware I2C/SPI/EUSART, and touch-sensing via the mTouch capacitive sensing module.
Architecturally, the PIC16LF1789 uses Microchip's enhanced mid-range 8-bit core with a 14-bit instruction word, hardware multiplier, and C-compiler-friendly architecture. The 32MHz core delivers 8 MIPS throughput. On-chip voltage regulation and nanoWatt XLP technology enable deep sleep currents below 50 nA, making the device suitable for battery-powered applications. The 44-QFN package provides thermal performance and small board area for compact designs.
Typical applications include industrial sensor conditioning, IoT edge nodes, medical instrumentation signal chains, automotive body controllers (using the Q-temperature variant), LED lighting control via PSMC, and battery-powered consumer products. The integrated op-amps and DACs enable direct sensor signal conditioning without external analog ICs.
Designers should note the 1.8V-3.6V VDD range; logic-level peripherals (e.g., 5V-tolerant signals) require level shifters. Programming requires a PICkit, ICD, or MPLAB X-compatible debug probe; the device supports ICSP and JTAG-style programming via the dedicated DEBUG pins.
This page synthesizes distributor pricing, drop-in alternatives from the PIC16LF178x family, and practical design notes not found in the manufacturer datasheet alone.
Bộ thay thế dễ dàng lắp đặt cho PIC16LF1789-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 PIC16LF1789-I/ML (cùng hình factor và footprint) — khác nhau ở DAC, Package, ADC, Comparators, Operating Temperature.
PIC16F1789-I/ML
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16LF1788-I/ML
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16LF1787-I/MV
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC16LF1789-I/ML Tỷ lệ tối đa & tính chất điện
| Core Architecture | PIC16 Enhanced Mid-Range 8-bit |
| Program Memory (Flash) | 28KB (16K x 14 instructions) |
| Data RAM | 2KB |
| EEPROM | 256 Bytes |
| Maximum CPU Speed | 32 MHz (8 MIPS) |
| Operating Voltage (VDD) | 1.8V to 3.6V |
| I/O Pins | Up to 36 |
| ADC | 12-bit, up to 25 channels |
| DAC | 1 x 8-bit, 2 x 5-bit |
| Operational Amplifiers | 3 on-chip |
| Comparators | 3 Fast Comparators |
| PSMC | Yes (Programmable Switch-Mode Controller) |
| CCP Modules | Multiple (Capture/Compare/PWM) |
| Communication | I2C, SPI, EUSART (RS-232/RS-485) |
| Hộp | 44-pin QFN (8x8 mm) with exposed pad |
| Nhiệt độ hoạt động | -40C to +85C (Industrial) |
| Programming | ICSP via DEBUG pins |
Cấu hình chân PIC16LF1789-I/ML
| Chân 1 | RA0/AN0 — Port A bit 0 / Analog input 0 |
| Chân 2 | RA1/AN1 — Port A bit 1 / Analog input 1 |
| Chân 3 | RA2/AN2 — Port A bit 2 / Analog input 2 |
| Chân 4 | RA3/AN3 — Port A bit 3 / Analog input 3 |
| Chân 5 | RA4/AN4 — Port A bit 4 / Analog input 4 |
| Chân 6 | RA5/AN5 — Port A bit 5 / Analog input 5 |
| Chân 7 | RA6/AN6 — Port A bit 6 / Analog input 6 |
| Chân 8 | RA7/AN7 — Port A bit 7 / Analog input 7 |
| Chân 9 | VDD — Positive supply voltage |
| Chân 10 | VSS — Ground reference |
| Chân 11 | RB0/AN8 — Port B bit 0 / Analog input 8 |
| Chân 12 | RB1/AN9 — Port B bit 1 / Analog input 9 |
| Chân 13 | RB2/AN10 — Port B bit 2 / Analog input 10 |
| Chân 14 | RB3/AN11 — Port B bit 3 / Analog input 11 |
| Chân 15 | RB4/AN12 — Port B bit 4 / Analog input 12 |
| Chân 16 | RB5/AN13 — Port B bit 5 / Analog input 13 |
| Chân 17 | RB6/ICSPCLK — Port B bit 6 / ICSP clock |
| Chân 18 | RB7/ICSPDAT — Port B bit 7 / ICSP data |
| Chân 19 | RC0 — Port C bit 0 |
| Chân 20 | RC1 — Port C bit 1 |
| Chân 21 | RC2 — Port C bit 2 |
| Chân 22 | RC3 — Port C bit 3 |
| Chân 23 | RC4 — Port C bit 4 |
| Chân 24 | RC5 — Port C bit 5 |
| Chân 25 | RC6 — Port C bit 6 |
| Chân 26 | RC7 — Port C bit 7 |
| Chân 27 | RD0 — Port D bit 0 |
| Chân 28 | RD1 — Port D bit 1 |
| Chân 29 | RD2 — Port D bit 2 |
| Chân 30 | RD3 — Port D bit 3 |
| Chân 31 | RD4 — Port D bit 4 |
| Chân 32 | RD5 — Port D bit 5 |
| Chân 33 | RD6 — Port D bit 6 |
| Chân 34 | RD7 — Port D bit 7 |
| Chân 35 | RE0 — Port E bit 0 |
| Chân 36 | RE1 — Port E bit 1 |
| Chân 37 | RE2 — Port E bit 2 |
| Chân 38 | RE3 — Port E bit 3 |
| Chân 39 | VDD — Positive supply voltage (second pin) |
| Chân 40 | VSS — Ground (second pin) |
| Chân 41 | MCLR — Master clear reset (active low) |
| Chân 42 | NC — Not connected |
| Chân 43 | NC — Not connected |
| Chân 44 | EP — Exposed thermal pad (connect to VSS) |
Ứng dụng tiêu biểu
PIC16LF1789-I/ML phù hợp cho 7 Áp dụngs: Industrial Sensor Signal Conditioning, Battery-Powered IoT Edge Nodes, LED Lighting and Smart Dimming Control, Medical Instrumentation Signal Chains, Automotive Body Control Modules, Switch-Mode Power Supply (SMPS) Control, Consumer Touch-Sensing User Interfaces.
Industrial Sensor Signal Conditioning
The PIC16LF1789-I/ML is well-suited for industrial sensor signal conditioning because it integrates three on-chip operational amplifiers and a 12-bit ADC with up to 25 channels. The op-amps can be configured as instrumentation front-ends for bridge sensors (load cells, strain gauges), thermocouple amplifiers, or 4-20mA current loop receivers, eliminating the need for external analog ICs. The 32MHz CPU (8 MIPS) runs Kalman filters or linearization algorithms in real time. The wide 1.8V-3.6V supply range supports 24V industrial bus systems via a downstream LDO, and the 44-QFN package's exposed pad simplifies thermal management in enclosed IP65 housings. Industrial designers value the device's robust -40C to +85C operating range and hardware CRC for fault-tolerant sensor data.
Được đề xuất
Battery-Powered IoT Edge Nodes
The PIC16LF1789-I/ML excels in battery-powered IoT edge nodes thanks to its 1.8V minimum VDD (direct Li-Ion/2xAA operation) and nanoWatt XLP technology delivering sub-50nA sleep current. The 32MHz CPU handles on-device sensor fusion before waking a co-processor radio, while the integrated 12-bit ADC samples environmental parameters. The 28KB Flash accommodates over-the-air (OTA) update bootloaders plus application code. Designers can leverage the three op-amps for low-side battery current sensing via shunt resistor, supporting fuel-gauging algorithms. The 44-QFN footprint (8x8 mm) enables compact wearable or smart-sensor PCB designs where board area is at a premium, and ICSP pins support field firmware provisioning via test pogo pins.
Được đề xuất
LED Lighting and Smart Dimming Control
The PIC16LF1789-I/ML drives LED lighting applications via its PSMC modules and multiple CCP channels, which can generate high-resolution PWM frequencies up to 100 kHz for flicker-free dimming. The 32MHz CPU supports DALI, DMX, or 0-10V dimming protocols, while the 12-bit ADC reads ambient light sensors for closed-loop brightness control. Two 5-bit DACs and one 8-bit DAC enable mixed analog/dimming outputs for tunable white or RGB color-mixing fixtures. Hardware I2C/SPI interface supports digital LED drivers like the TLC5947, offloading fade-computation from the CPU. The 36 GPIO pins can drive RGBW channels plus status LEDs without external logic, and the wide operating temperature range suits outdoor luminaire enclosures from -40C to +85C.
Được đề xuất
Medical Instrumentation Signal Chains
The PIC16LF1789-I/ML fits medical instrumentation signal chains because of its three integrated op-amps that can be configured as bio-potential amplifiers (ECG/EOG/EMG front-ends) with gain up to 100x. The 12-bit ADC with up to 25 channels captures multiple physiological signals simultaneously. The 32MHz CPU runs R-peak detection or pulse-oximetry algorithms, and the EUSART module streams processed data to a host processor or BLE radio. Low-power XLP modes extend battery life in portable pulse oximeters or single-lead ECG monitors. The wide operating voltage (1.8V-3.6V) enables direct 2xAAA battery operation, and the 44-QFN's small footprint supports wearable designs. Hardware AES via software library protects patient data on transmission.
Được đề xuất
Automotive Body Control Modules
The PIC16LF1789-I/ML operates in automotive body control modules (BCM) including mirror controllers, seat-position memory, and interior lighting. Its 32MHz CPU handles LIN bus communication via the EUSART module and processes multi-zone PWM outputs for ambient lighting. The integrated 12-bit ADC reads potentiometer inputs for seat-position feedback, while three op-amps condition sensor outputs. The 28KB Flash accommodates LIN protocol stacks plus diagnostic routines (UDS). Designers should select the PIC16LF1789-E/ML extended-temperature variant for under-hood applications. Note: this part is not AEC-Q100 qualified; for safety-critical or powertrain applications, choose a Q-qualified PIC or dsPIC. The wide operating voltage handles 12V battery transients via external TVS protection.
Được đề xuất
Switch-Mode Power Supply (SMPS) Control
The PIC16LF1789-I/ML is ideal for SMPS control applications because its integrated PSMC (Programmable Switch-Mode Controller) peripherals provide dedicated hardware for current-mode control, peak current sampling, and complementary PWM outputs with programmable dead-time. The 32MHz CPU executes voltage-mode control loops and adaptive digital filtering, while three Fast Comparators handle cycle-by-cycle overcurrent protection. The 12-bit ADC measures output voltage and temperature for digital feedback loops. Two DACs generate programmable reference voltages for adjustable-output designs. The wide 1.8V-3.6V supply operates directly from auxiliary windings in flyback converters, and the 44-QFN package's exposed pad dissipates heat in 5W-class adapters. Designers can implement PFC, LLC, or quasi-resonant topologies in firmware.
Được đề xuất
Consumer Touch-Sensing User Interfaces
The PIC16LF1789-I/ML powers consumer touch-sensing interfaces through its mTouch capacitive sensing module, which supports buttons, sliders, and proximity sensors via the 12-bit ADC. The 32MHz CPU handles multi-touch gesture recognition and debouncing algorithms, while the integrated op-amps can buffer sensor electrodes. The 28KB Flash accommodates capacitive touch libraries plus custom gesture firmware. Hardware I2C/SPI/EUSART interfaces communicate with host MCUs or BLE modules. Low-power XLP modes enable always-on touch wake-up from <50nA sleep, ideal for remote controls or smart-home panels. The 44-QFN's 8x8 mm footprint suits slim consumer devices, and the wide 1.8V-3.6V supply supports 2xAAA or coin-cell battery operation.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC16LF1789-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 | PIC16F1789-I/ML | PIC16LF1788-I/ML |
|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 44-QFN (8x8 mm) | 44-QFN (8x8 mm) - same | 44-QFN (8x8 mm) - same |
| Flash Memory | 28KB (16K x 14) | 28KB (16K x 14) - identical | 28KB (16K x 14) - identical |
| RAM | 2KB | 2KB - identical | 1KB - smaller |
| Operating Voltage | 1.8V to 3.6V | 2.3V to 5.5V - higher | 1.8V to 3.6V - identical |
| CPU Speed | 32 MHz / 8 MIPS | 32 MHz - identical | 32 MHz - identical |
| ADC | 12-bit, up to 25 channels | 12-bit - identical | 12-bit - identical |
| Op-Amps | 3 on-chip | 3 - identical | 2 - fewer |
Bảo phân biệt quan trọng
- Lower voltage operation enables direct battery operation (vsPIC16F1789-I/ML)
- Larger RAM enables more complex applications (vsPIC16LF1788-I/ML)
- Three op-amps reduce external BOM count (vsPIC16LF1788-I/ML)
Ghi chú thiết kế
The PIC16LF1789-I/ML operates from 1.8V to 3.6V; design the power supply with a low-dropout regulator (e.g., MCP1700) for stable operation from a Li-Ion or 2xAA source. Place 100nF decoupling capacitors close to each VDD pin (the 44-QFN has two VDD pins at positions 9 and 39) and a bulk 10uF tantalum or ceramic capacitor on the supply rail. Enable the internal voltage regulator by tying the VCAP pin (or following the datasheet's specific layout) to a 1uF capacitor.
For the 44-QFN (ML) package, solder the exposed thermal pad (EP, pin 44) to a ground copper pour of at least 1 square inch to meet thermal and electrical performance. Use 0.1uF bypass capacitors within 3mm of each VDD/VSS pair. Keep analog traces (AN0-AN13) short and isolated from digital switching traces to preserve ADC SNR. The DEBUG/ICSP pins (RB6/RB7) must be accessible via test points or pogo-pin pads for in-circuit programming.
The 12-bit ADC achieves full performance with an external 2.2nF anti-aliasing capacitor on the input pin and a low-impedance reference (e.g., MCP1525). Avoid routing ADC traces near PWM or PSMC outputs to prevent switching noise coupling. For high-accuracy measurements, enable the ADC's acquisition delay to allow the sample capacitor to settle, particularly when the source impedance exceeds 5k ohms. Refer to the Microchip PIC16LF1789 datasheet ADC section for AC electrical specifications.
Do not operate the PIC16LF1789 below 1.8V or above 3.6V; out-of-spec VDD will trigger brown-out resets or damage the Flash memory. The MCLR pin (pin 41) must be tied to VDD through a 10k resistor for normal operation; leaving it floating causes intermittent resets. When using the ICSP debugger (PICkit 5), ensure no series resistors above 100 ohms are placed on RB6/RB7, or programming will fail. Do not drive I/O pins above VDD or below VSS.
Estimated: at maximum 32MHz CPU and full peripheral activity, the PIC16LF1789-I/ML draws approximately 7 mA active current from a 3.3V supply (~23 mW dissipation). The 44-QFN package's exposed pad reduces theta_JA to approximately 28 C/W on a 4-layer 1oz copper PCB, yielding a junction temperature rise of 0.6C above ambient. No heatsink is required for typical applications; however, in enclosed IP65 housings with no airflow, verify junction temperature with a thermal probe during worst-case firmware execution.
Thông tin tuân thủ
RoHS compliant per Microchip product page. Not AEC-Q100 qualified; for automotive applications, choose the PIC18F Q-grade family or the PIC16LF1789 Q-temp variant. Halogen-free and lead-free per Microchip material declaration.
