PIC24FJ128GA110-I/PT - 16-Bit 32MHz 128KB Flash MCU | Microchip
MPN： PIC24FJ128GA110-I/PT ✓ 啟用中PIC24FJ128GA110-I/PT 概覽
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program and data memory, peripherals, and I/O on one silicon die. The PIC24F family sits within Microchip's 16-bit MCU portfolio (hypernym: MCU -> microcontroller -> embedded controller -> semiconductor), bridging 8-bit PIC10/12/16/18 devices and 32-bit PIC32 parts. The 'FJ' prefix denotes Flash program memory with XLP technology, optimized for battery-powered and energy-harvesting designs where quiescent current under 100 nA is mandatory.
Key features of the PIC24FJ128GA110-I/PT include 23 independent timers (5 x 16-bit and 18 x 16-bit via peripherals), a 10-bit 1.1 Msps Analog-to-Digital Converter (ADC) with up to 32 input channels, two analog comparators, an RTCC with calendar mode, and a Parallel Master Port (PMP) for external bus expansion. Hardware crypto accelerator, CTMU (Capacitive Touch mTouch) module, and five CCP/ECCP modules support motor drive, SMPS control, and human-interface touch sensing without external ICs.
Architecturally, the PIC24FJ128GA110-I/PT uses a modified Harvard bus with a 24-bit instruction word and 16-bit data path, enabling compact C code while supporting linear addressing up to 16 MB. The XLP design uses dynamic power management and deep-sleep modes that draw less than 100 nA with RAM retention, while Run mode current is typically under 1 mA/MIPS - a sweet spot for portable instrumentation.
Typical applications include industrial sensor hubs, USB human-interface devices (HID), portable medical monitors, remote controls, home automation gateways, and low-power wireless sensor nodes. The 100-pin TQFP exposes enough I/O (up to 85 GPIOs) for color TFT displays and parallel memory expansion, while the 16 KB RAM buffer comfortably holds TCP/IP stacks for embedded connectivity. Automotive-grade versions exist in the same family (e.g., PIC24FJ128GA110-I/PT is commercial grade).
Design consideration: the I-temp grade (-40C to +85C) suffix 'I' makes this part suitable for industrial environments, but the 100-pin TQFP requires a 4-layer PCB for clean decoupling; route VDD/VSS pairs to a solid internal ground plane and place 100 nF + 1 uF caps within 5 mm of each VDD pin.
This page synthesizes distributor pricing, drop-in same-family alternatives, and practical PCB layout notes not found in the manufacturer datasheet alone.
直接替換替代品，適用於 PIC24FJ128GA110-I/PT — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： PIC24FJ128GA110-I/PT （相同外形與佔位） — 差異在於 Package, Core Architecture, ADC, Operating Temperature, Timers.
PIC24FJ256GA110-I/PT
✅ 直接替換聯絡詢價
查看資料表 →PIC24FJ192GA110-I/PT
✅ 直接替換聯絡詢價
查看資料表 →PIC24FJ128GA110T-I/PT
✅ 直接替換📋 參考替代品（不在目錄中）
PIC24FJ128GB110-I/PT
✅ 直接替換聯絡詢價
查看資料表 →PIC24FJ128DA110-I/PT
✅ 直接替換聯絡詢價
查看資料表 →PIC24FJ128GA310-I/PF
✅ 直接替換聯絡詢價
查看資料表 →PIC24FJ128GA110-I/PT 最大額定值與電氣特性
| Core Architecture | PIC24F (16-bit modified Harvard, 24-bit instruction word) |
| Maximum CPU Speed | 32 MHz (16 MIPS) |
| Program Memory (Flash) | 128 KB (43K x 24 words) |
| Data RAM | 16 KB |
| Operating Voltage | 2.0 V to 3.6 V |
| I/O Pins | Up to 85 GPIO |
| Timers | 23 (5 x 16-bit + peripheral-based 16-bit timers) |
| UART Modules | 4 |
| SPI Modules | 3 |
| I2C Modules | 3 |
| ADC | 10-bit, 1.1 Msps, up to 32 channels |
| Analog Comparators | 2 |
| CCP / ECCP Modules | 5 |
| RTCC | Yes (calendar mode) |
| Parallel Master Port (PMP) | Yes |
| CTMU (mTouch) | Yes (Capacitive Touch module) |
| Standby Current (XLP) | < 100 nA (with RAM retention) |
| 封裝 | 100-pin TQFP (12x12 mm) |
| 工作溫度 | -40C to +85C (Industrial 'I' grade) |
| 安裝類型 | Surface Mount |
| MSL 等級 | 3 (per JEDEC J-STD-020) |
| RoHS 狀態 | Compliant |
PIC24FJ128GA110-I/PT 腳位配置
| 腳位 1 | RG15 — I/O port / remappable peripheral |
| 腳位 2 | VSS — Ground reference |
| 腳位 3 | VDD — Positive supply (3.3V nominal) |
| 腳位 4 | RG13 — I/O port / remappable peripheral |
| 腳位 5 | RG12 — I/O port / remappable peripheral |
| 腳位 6 | RC15 — I/O port / remappable peripheral |
| 腳位 7 | RC13 — I/O port / remappable peripheral |
| 腳位 8 | RC14 — I/O port / remappable peripheral |
| 腳位 9 | RA14 — I/O port / remappable peripheral |
| 腳位 10 | RA15 — I/O port / remappable peripheral |
| 腳位 11 | RA9 — I/O port / remappable peripheral |
| 腳位 12 | RA10 — I/O port / remappable peripheral |
| 腳位 13 | RA7 — I/O port / remappable peripheral |
| 腳位 14 | RA6 — I/O port / remappable peripheral |
| 腳位 15 | RC1 — I/O port / remappable peripheral |
| 腳位 16 | RC2 — I/O port / remappable peripheral |
| 腳位 17 | RC3 — I/O port / remappable peripheral |
| 腳位 18 | RC4 — I/O port / remappable peripheral |
| 腳位 19 | AVSS — Analog ground |
| 腳位 20 | AVDD — Analog positive supply |
| 腳位 21 | RB5 — I/O port / analog input AN5 |
| 腳位 22 | RB4 — I/O port / analog input AN4 |
| 腳位 23 | RB3 — I/O port / analog input AN3 |
| 腳位 24 | RB2 — I/O port / analog input AN2 |
| 腳位 25 | RB1 — I/O port / analog input AN1 |
| 腳位 26 | RB0 — I/O port / analog input AN0 |
| 腳位 27 | RB6 — I/O port / remappable peripheral |
| 腳位 28 | RB7 — I/O port / remappable peripheral |
| 腳位 29 | RB8 — I/O port / remappable peripheral |
| 腳位 30 | RB9 — I/O port / remappable peripheral |
| 腳位 31 | RB10 — I/O port / remappable peripheral |
| 腳位 32 | RB11 — I/O port / remappable peripheral |
| 腳位 33 | VSS — Ground reference |
| 腳位 34 | VDD — Positive supply (3.3V nominal) |
| 腳位 35 | RF5 — I/O port / remappable peripheral |
| 腳位 36 | RF4 — I/O port / remappable peripheral |
| 腳位 37 | RD9 — I/O port / remappable peripheral |
| 腳位 38 | RD8 — I/O port / remappable peripheral |
| 腳位 39 | RD7 — I/O port / remappable peripheral |
| 腳位 40 | RD6 — I/O port / remappable peripheral |
| 腳位 41 | RD5 — I/O port / remappable peripheral |
| 腳位 42 | RD4 — I/O port / remappable peripheral |
| 腳位 43 | RD3 — I/O port / remappable peripheral |
| 腳位 44 | RD2 — I/O port / remappable peripheral |
| 腳位 45 | RD1 — I/O port / remappable peripheral |
| 腳位 46 | RD0 — I/O port / remappable peripheral |
| 腳位 47 | ENVREG — Voltage regulator enable |
| 腳位 48 | VCAP — Voltage regulator output filter |
| 腳位 49 | OSC2 — Oscillator crystal output |
| 腳位 50 | OSC1 — Oscillator crystal input / external clock |
| 腳位 51 | RA0 — I/O port / remappable peripheral |
| 腳位 52 | RA1 — I/O port / remappable peripheral |
| 腳位 53 | RA2 — I/O port / remappable peripheral |
| 腳位 54 | RA3 — I/O port / remappable peripheral |
| 腳位 55 | RA4 — I/O port / remappable peripheral |
| 腳位 56 | RA5 — I/O port / remappable peripheral |
| 腳位 57 | VSS — Ground reference |
| 腳位 58 | VDD — Positive supply (3.3V nominal) |
| 腳位 59 | RF7 — I/O port / remappable peripheral |
| 腳位 60 | RF8 — I/O port / remappable peripheral |
| 腳位 61 | RF13 — I/O port / remappable peripheral |
| 腳位 62 | RF12 — I/O port / remappable peripheral |
| 腳位 63 | RF4 — I/O port / remappable peripheral (alternate) |
| 腳位 64 | RF3 — I/O port / remappable peripheral |
| 腳位 65 | RF2 — I/O port / remappable peripheral |
| 腳位 66 | RF1 — I/O port / remappable peripheral |
| 腳位 67 | RF0 — I/O port / remappable peripheral |
| 腳位 68 | RD14 — I/O port / remappable peripheral |
| 腳位 69 | RD15 — I/O port / remappable peripheral |
| 腳位 70 | RD12 — I/O port / remappable peripheral |
| 腳位 71 | RD13 — I/O port / remappable peripheral |
| 腳位 72 | RG14 — I/O port / remappable peripheral |
| 腳位 73 | RF6 — I/O port / remappable peripheral |
| 腳位 74 | VSS — Ground reference |
| 腳位 75 | VDD — Positive supply (3.3V nominal) |
| 腳位 76 | RG0 — I/O port / remappable peripheral |
| 腳位 77 | RG1 — I/O port / remappable peripheral |
| 腳位 78 | RE0 — I/O port / remappable peripheral |
| 腳位 79 | RE1 — I/O port / remappable peripheral |
| 腳位 80 | RE2 — I/O port / remappable peripheral |
| 腳位 81 | RE3 — I/O port / remappable peripheral |
| 腳位 82 | RE4 — I/O port / remappable peripheral |
| 腳位 83 | RE5 — I/O port / remappable peripheral |
| 腳位 84 | RE6 — I/O port / remappable peripheral |
| 腳位 85 | RE7 — I/O port / remappable peripheral |
| 腳位 86 | RG6 — I/O port / remappable peripheral |
| 腳位 87 | RG7 — I/O port / remappable peripheral |
| 腳位 88 | RG8 — I/O port / remappable peripheral |
| 腳位 89 | RG9 — I/O port / remappable peripheral |
| 腳位 90 | MCLR — Master clear / reset (active low) |
| 腳位 91 | VSS — Ground reference |
| 腳位 92 | VDD — Positive supply (3.3V nominal) |
| 腳位 93 | RC12 — I/O port / remappable peripheral |
| 腳位 94 | RC13 — I/O port / remappable peripheral |
| 腳位 95 | RC14 — I/O port / remappable peripheral |
| 腳位 96 | RC15 — I/O port / remappable peripheral |
| 腳位 97 | RD5 — I/O port / remappable peripheral (alternate) |
| 腳位 98 | RD6 — I/O port / remappable peripheral (alternate) |
| 腳位 99 | RD7 — I/O port / remappable peripheral (alternate) |
| 腳位 100 | RG14 — I/O port / remappable peripheral (alternate) |
典型應用
PIC24FJ128GA110-I/PT 適用於 7 應用s: Portable Medical Monitor, Industrial Sensor Hub / Modbus Node, USB Human-Interface Device (HID), Home Automation Gateway, Portable Test & Measurement Instrument, Low-Power Wireless Sensor Node, Automotive Dashboard Sub-Display Controller.
Portable Medical Monitor
The PIC24FJ128GA110-I/PT is well-suited for portable medical monitors such as pulse oximeters, glucose meters, and wearable ECG patches. Its XLP architecture draws less than 100 nA in deep-sleep with RTCC running, enabling multi-month battery life on a single CR2032 cell. The 128 KB Flash comfortably holds Bluetooth/BLE command stacks plus a real-time waveform buffer, while 16 KB RAM supports running averages and trend graphs. The 10-bit 1.1 Msps ADC with up to 32 channels captures multiple bio-signals (SpO2, heart rate, temperature) without external muxes. The four UARTs enable simultaneous connection to a BLE module, OLED display driver, and isolated USB-C charging path. Industrial-grade -40C to +85C operation supports skin-contact and refrigerated storage environments.
推薦
Industrial Sensor Hub / Modbus Node
For industrial sensor hubs aggregating multiple 4-20 mA loops, thermocouples, and digital sensors, the PIC24FJ128GA110-I/PT delivers 85 GPIO and 4 UARTs that map cleanly to RS-485 Modbus RTU masters, RS-232 debug ports, and dual-sensor SPI buses. The 23 timers support precise PWM-driven excitation for RTD/thermistor measurement, while the 10-bit ADC's 32 channels handle multi-zone temperature monitoring without external multiplexers. The 32 MHz / 16 MIPS throughput executes the Modbus master stack plus concurrent SPI sensor reads without CPU starvation. XLP standby with RTCC keeps battery-backed gateways alive during line-power outages. Industrial -40C to +85C operation is mandatory for unconditioned factory floor enclosures.
推薦
USB Human-Interface Device (HID)
The PIC24FJ128GA110-I/PT family member PIC24FJ128GB110-I/PT (same TQFP-100 footprint) integrates a full-speed USB 2.0 OTG controller with on-chip transceiver, making it ideal for USB HID peripherals such as custom keyboards, programmable input boards, and instrument-control panels. The 128 KB Flash hosts USB stacks plus HID report descriptors and key remapping logic; 16 KB RAM handles HID buffer queues without dropping packets. With 85 GPIO, the MCU drives large matrix-scan keypads and rotary encoders directly, eliminating I/O expander ICs. Hardware CCP modules generate precise key-press debounce timing, while the CTMU module supports capacitive touch sliders for modern industrial HID aesthetics. Migration to PIC24FJ128GB110-I/PT is pin-to-pin on the same PCB layout.
推薦
Home Automation Gateway
The PIC24FJ128GA110-I/PT powers home automation gateways bridging Wi-Fi, Zigbee, BLE, and sub-GHz sub-systems into a unified dashboard. The 3 SPI, 3 I2C, and 4 UART interfaces connect simultaneously to multiple wireless modules (typically ESP32 for Wi-Fi, nRF52 for BLE, and a sub-GHz transceiver) without bus contention. The 16 KB RAM holds MQTT message queues and small TLS session caches, while the 128 KB Flash runs the full TCP/IP and TLS stacks plus a Web-server for local UI. The 32 MHz throughput handles TLS handshake encryption without user-perceptible latency. XLP standby reduces night-mode power when only the RTCC wake-up timer is active, critical for always-on mains-powered devices seeking Energy Star ratings.
推薦
Portable Test & Measurement Instrument
Handheld multimeters, oscilloscope probes, and field-installable cable testers benefit from the PIC24FJ128GA110-I/PT's combination of 10-bit 1.1 Msps ADC, 32 analog channels, RTCC with calendar, and rich serial connectivity. The MCU samples up to 1.1 Msps while running FFT and RMS calculations in real time thanks to 16 MIPS throughput. The RTCC timestamps measurements for ISO 17025-traceable calibration logs, while 16 KB RAM buffers 10,000+ samples before flushing to external EEPROM. Four UARTs drive Bluetooth result export, USB charging, and isolated RS-485 Modbus logging simultaneously. The 100-pin TQFP supports a color TFT display via PMP plus capacitive touch via CTMU, enabling modern touchscreen handheld UX.
推薦
Low-Power Wireless Sensor Node
Battery-powered wireless sensor nodes - from agricultural soil monitors to logistics cold-chain trackers - rely on the PIC24FJ128GA110-I/PT's XLP architecture. Deep-sleep current below 100 nA with RAM retention enables multi-year operation on a pair of AA cells, while the RTCC wakes the MCU at scheduled intervals to sample and transmit. The 128 KB Flash holds wireless protocol stacks (LoRaWAN, Wireless M-Bus, or BLE) plus local data compression, while 16 KB RAM caches 24 hours of measurements between transmissions. The 23 timers schedule periodic wake-ups without CPU intervention, and the 4 UARTs drive multiple wireless modules (LoRa, BLE, sub-GHz) for redundant connectivity. Industrial -40C to +85C operation handles outdoor environments.
推薦
Automotive Dashboard Sub-Display Controller
Although the 'I' industrial grade of PIC24FJ128GA110-I/PT is limited to -40C to +85C, the same die is available as the PIC24FJ128GA110-E/PT extended grade (-40C to +125C) for cabin displays and instrument-cluster sub-displays. The PMP drives small TFT panels directly, while the CTMU module supports capacitive touch buttons or sliders for premium-feel interior controls. The 23 timers generate backlight PWM, gauge animations, and CAN-bus message timeouts concurrently without CPU load. Four UARTs bridge to the central gateway, GPS receiver, Bluetooth audio module, and diagnostic OBD-II port. The 128 KB Flash holds graphical gauge libraries, while 16 KB RAM doubles as a frame buffer for low-resolution icons.
推薦
推薦產品摘要
工程參考資料，適用於 PIC24FJ128GA110-I/PT — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | PIC24FJ256GA110-I/PT | PIC24FJ192GA110-I/PT | PIC24FJ128GB110-I/PT | PIC24FJ128DA110-I/PT | PIC24FJ128GA310-I/PF | PIC24FJ128GA110T-I/PT |
|---|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 100-pin TQFP (12x12) | 100-pin TQFP (12x12) - same | 100-pin TQFP (12x12) - same | 100-pin TQFP (12x12) - same | 100-pin TQFP (12x12) - same | 100-pin TQFP (12x12) - same | 100-pin TQFP (12x12) - same |
| Flash Memory | 128 KB | 256 KB | 192 KB | 128 KB | 128 KB | 128 KB | 128 KB |
| RAM | 16 KB | 32 KB | 32 KB | 16 KB | 16 KB | 16 KB | 16 KB |
| Maximum CPU Speed | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS |
| USB 2.0 FS OTG | No | No | No | Yes (integrated) | No | Yes (integrated) | No |
| ADC Resolution / Type | 10-bit SAR | 10-bit SAR | 10-bit SAR | 10-bit SAR | 16-bit sigma-delta | 10-bit SAR | 10-bit SAR |
| Operating Temperature | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) |
| RoHS Status | Compliant | Compliant | Compliant | Compliant | Compliant | Compliant | Compliant |
主要差異化特點
- Highest-density connectivity in PIC24F family (對比PIC24FJ128GA010-I/PT)
- Drop-in 256 KB upgrade path on same PCB (對比PIC24FJ256GA110-I/PT)
- USB-enabled sibling without layout change (對比PIC24FJ128GB110-I/PT)
- Lower-cost 80-pin variant for compact designs (對比PIC24FJ128GA108-I/PT)
設計說明
Estimated: at VDD = 3.3V and active CPU @ 32 MHz / 16 MIPS, core current draw is approximately 15 mA, rising linearly with peripheral use. Place a 100 nF X7R ceramic capacitor within 5 mm of every VDD/VSS pin pair, plus a single 10 uF bulk cap near the VCAP pin (pin 48). For deep-sleep XLP standby with RTCC enabled, expect <100 nA leakage per Microchip datasheet (DS39747C) - critical for battery-only designs. ENVREG (pin 47) must be tied to VDD or left open only when the internal regulator is intentionally disabled.
Per Microchip datasheet (DS39747C), the 100-pin TQFP (12x12 mm) requires a 4-layer PCB with a dedicated ground plane to meet EMI/EMC and decoupling requirements. Route each VDD/VSS pin pair directly to the plane using short 8 mil traces and one via per pad. Place all 7 VDD pins (3, 34, 58, 75, 92 plus two internal pairs) on the top layer with stitched ground vias. Analog pins (AVDD/AVSS at 19/20) should connect to a separate analog island tied back to digital ground at a single point near the MCU.
Common pitfalls: (1) Forgetting that pin 47 (ENVREG) defaults to enabled - tying it low disables the internal 1.8V core regulator and immediately bricks the part; (2) Attempting to drive a 5V signal into any GPIO (max Vih = VDD + 0.3V per datasheet DS39747C); (3) Using the internal 8 MHz RC oscillator for UART baud rates above 115200 without FRC PLL calibration - drift exceeds UART error tolerance; (4) Configuring the RTCC without an external 32.768 kHz crystal on SOSCO/SOSCI pins, causing time-of-day drift of several percent. Use ICSP pins (PGC/PGD, MCLR) with a 4.7k pull-up on MCLR for reliable in-circuit programming.
Estimated: total decoupling capacitance requirement is ~7 uF spread across the package. Place 100 nF caps on the bottom side of the PCB directly beneath each VDD/VSS pair to minimize loop inductance. For high-speed SPI buses running above 10 MHz, add 33 ohm series-termination resistors at the driver pins to dampen ringing. The PMP pins (PMA0-PMA15, PMD0-PMD15) drive external memory or displays - keep traces under 50 mm and matched within 5 mm to preserve setup/hold timing per datasheet DS39747C electrical characteristics.
合規資訊
RoHS compliant per Microchip product page. The 'I' grade is Industrial (-40C to +85C), not AEC-Q100 qualified; the same die in 'E' grade (-40C to +125C) is suitable for cabin automotive but still not AEC-Q100. Halogen-free per Microchip packaging statement.
