PIC16LF1789-I/PT - 8-Bit 32MHz 28KB Flash MCU | Microchip | TQFP-44
MPN: PIC16LF1789-I/PT ✓ Hoạt độngPIC16LF1789-I/PT Tóm tắt
An 8-bit PIC microcontroller is a Harvard-architecture RISC processor optimized for low power, deterministic interrupt response and ease of peripheral integration. In the broader taxonomy, PIC16 sits between PIC10/12/14 entry-level MCUs and PIC18 mid-range MCUs. PIC microcontrollers belong to the larger family of microcontrollers (MCUs), which are a subset of microprocessors and embedded processors. PIC MCUs dominate cost-sensitive, low-power and motor/sensor-control applications because the integrated peripherals and tiny instruction set minimize external component count and firmware complexity.
Key differentiating specifications of the PIC16LF1789 include: 28 KB self-programmable Flash program memory with 16K x 14 word organization, 2 KB SRAM, 256 B EEPROM for non-volatile data, up to 36 digital I/O pins, an integrated 12-bit ADC with up to 28 channels, three rail-to-rail op amps, two 5-bit DACs and one 8-bit DAC, plus three comparators and Capture/Compare/PWM modules. The XLP Sleep mode delivers nanoWatt-class standby current for always-on sensor nodes. The device is programmed and debugged through Microchip's MPLAB X IDE using the MPLAB ICD, PICKit or REAL ICE tools, with C18, XC8 and assembly language support.
The PIC16LF1789 uses a modified Harvard architecture with separate program Flash and data EEPROM/SRAM buses, a 14-bit instruction word, and an instruction set optimized for one-cycle execution. Hardware multiplier support, interrupt shadow registers and a 32-level deep hardware stack simplify C-language firmware porting from PIC18 while retaining the deterministic timing that PIC users expect. A wide operating voltage window of 1.8V to 3.6V lets the same board design accept 2xAA batteries, single Li-Ion cells or 3.3V regulated rails, simplifying SKU consolidation.
Typical applications for the PIC16LF1789-I/PT include low-power IoT sensor nodes with on-chip signal conditioning, portable medical monitoring devices such as pulse oximeters and glucose meters, LED lighting and color-mixing controllers that leverage the integrated DACs and PWM, battery-powered home automation and smart-home end nodes, automotive body and accessory subsystems (non-AEC-Q100 grade), industrial sensor signal conditioning, and small brushed DC or stepper motor control loops where the on-chip op amps and PWM reduce BOM cost.
When designing with the PIC16LF1789-I/PT, observe the supply decoupling guidance: place a 100 nF ceramic capacitor directly across VDD/VSS pins and add a bulk 1-10 uF tantalum or ceramic capacitor near the MCU. The wide analog subsystem draws fast transient current during ADC conversions, so separating AVDD/AVSS filtering from VDD/VSS and using a ferrite bead on the digital rail improves ADC noise floor. Confirm that your firmware does not exceed 28 KB Flash (16K words) and respect the 4-word interrupt vector boundary.
This page synthesizes XAIPART distributor pricing, application-specific design notes and a same-family drop-in alternative matrix not found in the manufacturer datasheet alone, giving engineers a single-page reference for part selection, BOM risk analysis and quick replacement decisions.
Bộ thay thế dễ dàng lắp đặt cho PIC16LF1789-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 PIC16LF1789-I/PT (cùng hình factor và footprint) — khác nhau ở Comparators, Core, DAC, MSL Level, Timers.
PIC16F1789-I/PT
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC16LF1789-I/PT Tỷ lệ tối đa & tính chất điện
| Manufacturer | Microchip Technology |
| Series | PIC16 (L)F1789 |
| Core | PIC 8-bit RISC |
| Instruction Set Architecture | Harvard, 14-bit instruction word |
| Maximum CPU Clock | 32 MHz |
| Program Memory (Flash) | 28 KB (16K x 14 words) |
| Data Memory (SRAM) | 2 KB |
| Data EEPROM | 256 B |
| Supply Voltage Range | 1.8 V to 3.6 V |
| Khoảng nhiệt độ hoạt động | -40 C to +85 C (Industrial, "I" grade) |
| Package / Mounting | 44-pin TQFP (PT) 10x10 mm, Surface Mount |
| Digital I/O Pins | Up to 36 |
| ADC | 12-bit, up to 28 channels |
| DAC | Two 5-bit + one 8-bit DAC |
| Operational Amplifiers | Three on-chip rail-to-rail op amps |
| Comparators | 3 |
| Communication Peripherals | 1x EUSART, 1x I2C/SPI, 1x SPI |
| PWM Modules / CCP | Multiple Capture/Compare/PWM modules |
| Timers | 8-bit and 16-bit timers |
| Low-Power Feature | XLP nanoWatt Sleep mode |
| Trạng thái RoHS | Compliant |
| Lead-Free | Yes |
| Cấp MSL | 3 |
| Programming / Debug | MPLAB X IDE, MPLAB ICD / PICKit / REAL ICE |
Cấu hình chân PIC16LF1789-I/PT
| Chân 1 | RA3/AN9/VREF+/CMP1IN1- — Bidirectional I/O, analog input 9, voltage reference positive, comparator 1 inverting input |
| Chân 2 | RA4/T0CKI/CMP2 — Bidirectional I/O, Timer0 clock input, comparator 2 output |
| Chân 3 | RA5/AN4/CMP1IN3-/DAC5OUT2 — Bidirectional I/O, analog input 4, comparator 1 negative input, 5-bit DAC 2 output |
| Chân 4 | RA6/AN5/DAC5OUT1 — Bidirectional I/O, analog input 5, 5-bit DAC 1 output |
| Chân 5 | RA7 — Bidirectional I/O only |
| Chân 6 | RC0/SOSCO — Bidirectional I/O, secondary oscillator output |
| Chân 7 | RC1/SOSCI — Bidirectional I/O, secondary oscillator input |
| Chân 8 | RC2/AN11/CMP2IN0- — Bidirectional I/O, analog input 11, comparator 2 negative input |
| Chân 9 | RC3/AN12/CMP2IN0+ — Bidirectional I/O, analog input 12, comparator 2 positive input |
| Chân 10 | RC4/AN8/C2OUT — Bidirectional I/O, analog input 8, comparator 2 output |
| Chân 11 | VDD — Positive supply voltage (1.8 V to 3.6 V) |
| Chân 12 | VSS — Ground reference |
| Chân 13 | RA0/AN0/CMP1IN0+/DAC8OUT0 — Bidirectional I/O, analog input 0, comparator 1 positive input, 8-bit DAC 0 output |
| Chân 14 | RA1/AN1/CMP1IN0-/OPA1OUT — Bidirectional I/O, analog input 1, comparator 1 negative input, op amp 1 output |
| Chân 15 | RA2/AN2/VREF-/DAC5OUT0 — Bidirectional I/O, analog input 2, voltage reference negative, 5-bit DAC 0 output |
| Chân 16 | RC5/AN10/OPA2OUT — Bidirectional I/O, analog input 10, op amp 2 output |
| Chân 17 | RC6/AN13/OPA3IN+ — Bidirectional I/O, analog input 13, op amp 3 positive input |
| Chân 18 | RC7/AN14/OPA3OUT — Bidirectional I/O, analog input 14, op amp 3 output |
| Chân 19 | RC8/AN16 — Bidirectional I/O, analog input 16 |
| Chân 20 | RC9/AN17 — Bidirectional I/O, analog input 17 |
| Chân 21 | RC10/AN18 — Bidirectional I/O, analog input 18 |
| Chân 22 | RC11/AN19 — Bidirectional I/O, analog input 19 |
| Chân 23 | RC12 — Bidirectional I/O only |
| Chân 24 | RC13 — Bidirectional I/O only |
| Chân 25 | RC14 — Bidirectional I/O only |
| Chân 26 | RC15 — Bidirectional I/O only |
| Chân 27 | RB0/AN20 — Bidirectional I/O, analog input 20 |
| Chân 28 | RB1/AN21 — Bidirectional I/O, analog input 21 |
| Chân 29 | RB2/AN22 — Bidirectional I/O, analog input 22 |
| Chân 30 | RB3/AN23 — Bidirectional I/O, analog input 23 |
| Chân 31 | RB4/AN24 — Bidirectional I/O, analog input 24 |
| Chân 32 | RB5/AN25 — Bidirectional I/O, analog input 25 |
| Chân 33 | RB6/AN26 — Bidirectional I/O, analog input 26 |
| Chân 34 | RB7/AN27 — Bidirectional I/O, analog input 27 |
| Chân 35 | VSS — Ground reference |
| Chân 36 | VDD — Positive supply voltage (1.8 V to 3.6 V) |
| Chân 37 | RD0 — Bidirectional I/O only |
| Chân 38 | RD1 — Bidirectional I/O only |
| Chân 39 | RD2 — Bidirectional I/O only |
| Chân 40 | RD3 — Bidirectional I/O only |
| Chân 41 | RD4 — Bidirectional I/O only |
| Chân 42 | RD5 — Bidirectional I/O only |
| Chân 43 | RD6 — Bidirectional I/O only |
| Chân 44 | RD7 — Bidirectional I/O only |
Ứng dụng tiêu biểu
PIC16LF1789-I/PT phù hợp cho 6 Áp dụngs: Low-Power IoT Sensor Nodes, Portable Medical Monitoring, LED Lighting and Color Mixing Controllers, Smart Home End Nodes, Industrial Sensor Signal Conditioning, Brushed DC and Stepper Motor Control.
Low-Power IoT Sensor Nodes
The PIC16LF1789-I/PT is an excellent fit for battery-powered IoT sensor nodes because its XLP Sleep current is in the nanoWatt range and its 32 MHz PIC RISC core wakes quickly to run protocol stacks. With 12-bit ADC, on-chip op amps and an 8-bit DAC, the MCU conditions analog sensors such as thermistors, photo-diodes or gas sensors without external analog ICs. A coin-cell node with 1% duty cycle wake-and-transmit can run for years on a single CR2032 cell using LF silicon. Place the MCU between the battery and a LoRa/BLE module; firmware in XC8 uses the EUSART for the radio link and the ADC for the sensor channel.
Được đề xuất
Portable Medical Monitoring
The PIC16LF1789-I/PT suits portable medical monitoring (pulse oximetry, glucose meters, wearable ECG patches) because of its low active current, 1.8 V minimum supply and integrated 12-bit ADC plus three op amps for analog front-end conditioning. The LF silicon allows designs to run directly from 2xAAA cells without boost converters, shrinking BOM size. Place the MCU adjacent to the analog front-end (e.g. a red/IR LED driver) with separate AVDD/AVSS ferrite filtering. Firmware in XC8 drives the LEDs via PWM, samples the photodiode via ADC and reports SpO2 over BLE.
Được đề xuất
LED Lighting and Color Mixing Controllers
The PIC16LF1789-I/PT drives multichannel LED lighting and color-mixing applications using its two 5-bit DACs, one 8-bit DAC, multiple PWM modules and 32 MHz core for high-frequency PWM switching with low perceived flicker. The wide 1.8-3.6 V supply lets the controller accept direct Li-Ion battery power for portable fixtures. Place the MCU between the battery and high-current LED drivers (e.g. TLC59401), use the DAC outputs for trim currents and route PWM channels to the LED driver enable pins. Production-grade lighting firmware fits within the 28 KB Flash budget with XC8 compilation.
Được đề xuất
Smart Home End Nodes
The PIC16LF1789-I/PT powers smart-home end nodes such as battery-powered door/window sensors, leak detectors and HVAC actuators because its LF silicon offers the lowest Sleep current in the PIC16 family and its 256 B EEPROM stores calibration and security keys. The integrated 12-bit ADC handles temperature, humidity and PIR motion sensor inputs while the EUSART links to a sub-GHz or BLE radio module. A typical design routes the MCU between the battery, sensor and a Murata Type 1LD radio module, with firmware in XC8 implementing event-driven wake-up to keep average current below 5 uA.
Được đề xuất
Industrial Sensor Signal Conditioning
The PIC16LF1789-I/PT works well in industrial 4-20 mA loop-powered sensor transmitters because its three on-chip op amps provide instrumentation-amp-style front-end gain, the 12-bit ADC digitizes the conditioned signal and the wide 1.8-3.6 V supply tolerates loop-voltage variations. The 44-pin TQFP package exposes enough analog-capable I/O for thermocouple, RTD or strain-gauge bridges without external multiplexers. Place the MCU as the loop-powered brain between the bridge sensor and an HART modem or 4-20 mA DAC; use the internal 8-bit DAC for analog retransmission.
Được đề xuất
Brushed DC and Stepper Motor Control
The PIC16LF1789-I/PT drives small brushed DC and stepper motors because its Capture/Compare/PWM modules generate complementary PWM with dead-band control, the 32 MHz core handles velocity-loop closures in firmware and the integrated op amps sense motor current. LF silicon allows 1.8 V operation for direct Li-Ion battery drives; the TQFP-44 package fits within compact motor-driver PCBs. Place the MCU between the battery and an H-bridge driver (e.g. DRV8871), with firmware using the ADC for current sense and the PWM for commutation timing.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC16LF1789-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 | PIC16F1789-I/PT | PIC16LF1789-I/MV |
|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 44-pin TQFP (PT) 10x10 mm | 44-pin TQFP (PT) 10x10 mm - same | 64-pin MQFN (MV) 9x9 mm - different |
| Supply Voltage | 1.8 V to 3.6 V | 2.0 V to 5.5 V | 1.8 V to 3.6 V |
| Program Memory | 28 KB (16K x 14) | 28 KB (16K x 14) | 28 KB (16K x 14) |
| Data SRAM | 2 KB | 2 KB | 2 KB |
| Data EEPROM | 256 B | 256 B | 256 B |
| Maximum CPU Clock | 32 MHz | 32 MHz | 32 MHz |
| Temperature Grade | Industrial -40 C to +85 C | Industrial -40 C to +85 C | Industrial -40 C to +85 C |
| RoHS Compliance | Yes | Yes | Yes |
Bảo phân biệt quan trọng
- Lowest Sleep current in PIC16 family (vsPIC16F1789-I/PT)
- 1.8 V minimum supply enables 2xAA direct drive (vsPIC16F1789-I/PT)
- 44-pin TQFP footprint offers same analog + 16 extra digital I/O (vsPIC16LF1788-I/SP (28-pin SPDIP))
Ghi chú thiết kế
Place a 100 nF ceramic bypass capacitor on each VDD/VSS pair (pins 11/12 and pins 36/35 of the 44-pin TQFP) within 3 mm of the package. Add a single bulk 1-10 uF tantalum or ceramic capacitor on the supply rail near the MCU. The wide analog subsystem draws fast transient current during ADC conversions, so separate AVDD/AVSS filtering from VDD/VSS with a ferrite bead on the digital rail improves ADC noise floor and avoids spurious ADC readings.
Keep analog input traces (AN0-AN27) short and shielded by a ground pour to minimize coupled digital switching noise into the ADC. Route the high-current PWM outputs (e.g. motor or LED driver PWM) on a separate trace layer from analog inputs. Place the ICSPDAT/ICSPCLK programming pins (RB7/RB6) accessible to the in-circuit programmer pads and ensure no series resistors above 1 kohm on these lines, or the MPLAB ICD/PICKit cannot reliably debug.
Do not exceed 28 KB (16K x 14) of Flash, and respect the 4-word interrupt vector boundary at 0x0004 - placing a GOTO at vector 0x0004 is mandatory. Use the internal 16 MHz HFINTOSC as default clock source to free the OSC1/OSC2 pins for I/O, but calibrate with the OSCTUNE register if your UART baud rate is critical. The on-chip EEPROM has 100k erase/write cycles endurance - design firmware to spread writes via wear-leveling if you frequently log data.
Thông tin tuân thủ
RoHS and REACH compliant per Microchip product page; not AEC-Q100 qualified (use PIC16F1789-I/PT-Q1 for automotive). Halogen-free status not explicitly stated in provided data.
