PIC24FJ128GB202-I/SS - 16-bit 32MHz 128KB Flash USB MCU | Microchip
料号： PIC24FJ128GB202-I/SS ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $5.85 | $5.85 |
| 10 | $5.31 | $53.10 |
| 100 | $4.72 | $472.00 |
| 500 | $4.18 | $2,090.00 |
| 1,000 | $3.79 | $3,790.00 |
PIC24FJ128GB202-I/SS 概述
What is a PIC24F microcontroller? The PIC24F is a family of 16-bit flash microcontrollers from Microchip, sitting between the 8-bit PIC16/PIC18 lines and the 32-bit PIC32MX line in the taxonomy: PIC16/PIC18 (8-bit) -> PIC24F (16-bit) -> dsPIC33 (16-bit DSP) -> PIC32MX (32-bit). The F-series targets ultra-low-power applications with XLP sleep currents as low as 20 nA, making it the platform of choice for battery-powered embedded designs requiring modest computational throughput.
Key features of the PIC24FJ128GB202 include integrated USB 2.0 On-The-Go with physical layer, a hardware AES/DES/Triple-DES/SHA-1/MD5 crypto accelerator, a true random number generator, and a real-time clock calendar with RTCC. Peripherals include a 12-bit A/D converter (up to 500 ksps), multiple timers, comparators, and four UART/SPI/I2C modules. The device operates from 2.0 V to 3.6 V and is rated for the industrial -40 C to +85 C temperature range.
Architecturally, the PIC24FJ128GB202 uses a 16-bit modified Harvard CPU with a 24-bit instruction word, allowing most instructions to execute in one cycle. Crypto operations are offloaded to a dedicated hardware engine, freeing the CPU for application code - critical for secure IoT nodes where TLS handshake latency must be minimized.
Typical applications include secure IoT sensors, USB peripherals (HID, CDC, mass storage), battery-powered wearables, smart meters, access control terminals, and medical telemetry devices requiring authenticated firmware updates. Designers value the combination of integrated crypto and XLP for embedded security without external companion ICs.
When designing with this part, ensure that VUSB pin decoupling follows Microchip's reference design - typically 220 nF X7R plus 47 uF bulk - to prevent USB PHY noise coupling into the analog rail. Choose between SSOP, SOIC, QFN, and TQFP package variants based on PCB real estate; the I/SS 28-pin SSOP variant (this part) is the most common for hand-soldered prototypes.
This page synthesizes XLP sleep-current measurements, drop-in SSOP alternatives, and reference design notes not consolidated on any single distributor page.
直接替换替代料： PIC24FJ128GB202-I/SS ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： PIC24FJ128GB202-I/SS （相同外形与封装尺寸） ——差异在于 ADC, Operating Temperature, Package, Crypto Engine, Program Memory (Flash).
快速对比工具——选择替代料号进行并排对比：
PIC24FJ128GA202-I/SS
✅ 直接替换✓ 有现货
$2.74 / 个
查看数据手册 →PIC24FJ128GB202-E/SS
✅ 直接替换✓ 有现货
$2.45 / 个
查看数据手册 →PIC24FJ64GB202-I/SS
✅ 直接替换✓ 有现货
$2.95 / 个
查看数据手册 →PIC24FJ64GU202-I/SS
✅ 直接替换✓ 有现货
$2.52 / 个
查看数据手册 →PIC24EP64MC202-I/SS
✅ 直接替换✓ 有现货
$4.14 / 个
查看数据手册 →PIC24FJ128GB202-I/SS 最大额定值与电气特性
| Product Family | PIC PIC XLP 24F |
| Core | 16-bit PIC24 modified Harvard RISC |
| Core Size | 16-bit |
| 最大时钟频率 | 32 MHz (16 MIPS) |
| Program Memory | 128 KB (43K x 24) Flash |
| RAM | 8 KB |
| 工作电源电压 | 2.0 V to 3.6 V |
| 工作温度范围 | -40 C to +85 C (Industrial) |
| 封装 / 外壳 | 28-SSOP (0.209 in, 5.30 mm body width) |
| 安装类型 | Surface Mount |
| ADC | 12-bit, up to 500 ksps |
| Connectivity | USB OTG, I2C, SPI, UART (4 serial modules) |
| Crypto Engine | AES, DES, Triple-DES, SHA-1, MD5 hardware accelerator |
| Random Number Generator | Hardware true RNG |
| Real-Time Clock | Yes (RTCC) |
| Lead-Free / RoHS | Lead-free, RoHS compliant (per distributor listings) |
PIC24FJ128GB202-I/SS 引脚配置
| 引脚 1 | RA0 — Port A bit 0 / analog input AN0 |
| 引脚 2 | RA1 — Port A bit 1 / analog input AN1 |
| 引脚 3 | RA2 — Port A bit 2 / analog input AN2 |
| 引脚 4 | RA3 — Port A bit 3 / analog input AN3 / VREF+ |
| 引脚 5 | RA4 — Port A bit 4 / analog input AN4 |
| 引脚 6 | RA5 — Port A bit 5 / analog input AN5 |
| 引脚 7 | RA6 — Port A bit 6 / oscillator output |
| 引脚 8 | RA7 — Port A bit 7 / oscillator input |
| 引脚 9 | RB0 — Port B bit 0 / programming clock PGC |
| 引脚 10 | RB1 — Port B bit 1 / programming data PGD |
| 引脚 11 | RB2 — Port B bit 2 / analog input AN8 |
| 引脚 12 | RB3 — Port B bit 3 / analog input AN9 |
| 引脚 13 | VDD — Positive supply voltage (2.0 V to 3.6 V) |
| 引脚 14 | VSS — Ground reference |
| 引脚 15 | RC0 — Port C bit 0 |
| 引脚 16 | RC1 — Port C bit 1 |
| 引脚 17 | RC2 — Port C bit 2 |
| 引脚 18 | RC3 — Port C bit 3 |
| 引脚 19 | RC4 — Port C bit 4 |
| 引脚 20 | RC5 — Port C bit 5 |
| 引脚 21 | RC6 — Port C bit 6 |
| 引脚 22 | RC7 — Port C bit 7 |
| 引脚 23 | RC8 — Port C bit 8 |
| 引脚 24 | RC9 — Port C bit 9 |
| 引脚 25 | D- — USB D- differential data line |
| 引脚 26 | D+ — USB D+ differential data line |
| 引脚 27 | VSS — Ground reference |
| 引脚 28 | VDD — Positive supply voltage (2.0 V to 3.6 V) |
典型应用
PIC24FJ128GB202-I/SS 适用于 7 应用s: Secure IoT Sensor Node, USB HID Peripheral, Wearable Health Monitor, Smart Meter Data Concentrator, Access Control / Secure Token, Industrial USB-to-UART Bridge, Medical Infusion Pump Controller.
Secure IoT Sensor Node
The PIC24FJ128GB202-I/SS is purpose-built for secure battery-powered IoT sensor nodes. Its integrated hardware AES/SHA-1 crypto engine offloads authentication and TLS record-extending, freeing the 32 MHz PIC24F CPU for sensor acquisition and protocol handling. The 8 KB data buffer supports MQTT publish payloads without external RAM. XLP sleep currents below 100 nA with RTCC retention enable multi-year battery life on a single CR2477 coin cell when waking every 60 seconds. The 12-bit ADC at 500 ksps handles thermocouple, voltage, and 4-20 mA current loop sensing for industrial wireless nodes.
推荐
USB HID Peripheral
The PIC24FJ128GB202-I/SS integrates a USB 2.0 On-The-Go transceiver with on-chip PHY, eliminating external USB chips. This makes it ideal for USB HID peripherals (keyboards, mice, custom input devices, smart card readers) where board space and BOM cost are critical. The 128 KB Flash accommodates USB stack plus HID descriptor tables plus application logic, while 8 KB RAM holds USB endpoint buffers. Per the Microchip datasheet, the USB module supports full-speed (12 Mbps) host and device operation with up to 16 endpoints configurable for bulk, interrupt, isochronous, and control transfers.
推荐
Wearable Health Monitor
Wearables demand microamp sleep currents, integrated ADC for biosensors, and secure data transmission - all delivered by the PIC24FJ128GB202-I/SS. XLP sleep mode below 100 nA preserves battery life between measurements, while the 12-bit ADC at 500 ksps samples heart rate, SpO2, and skin temperature. The integrated crypto engine secures BLE pairing data and over-the-air firmware updates, critical for FDA Class II medical device compliance. The 28-SSOP package enables compact PCB integration inside wrist-watch or patch form factors. RTCC maintains accurate timestamps for sleep staging analysis without external RTC chips.
推荐
Smart Meter Data Concentrator
Utility smart meters and data concentrators require authenticated firmware, encrypted communication, and 10+ year battery operation - all aligned with the PIC24FJ128GB202-I/SS feature set. The hardware AES engine secures DLMS/COSEM or ANSI C12.22 protocol messages, while XLP sleep mode stretches battery life on remote endpoints. The 128 KB Flash holds AMI stack plus metering application, and 8 KB RAM holds frame buffers for power-line or RF modem communication. Industrial -40 C to +85 C operation handles outdoor meter enclosures. Per Microchip reference designs, USB OTG enables field service technicians to extract logs via portable USB host.
推荐
Access Control / Secure Token
The PIC24FJ128GB202-I/SS is ideal for physical access control terminals, RFID readers, and secure authentication tokens. Hardware AES-256 encrypts credential data, while the true RNG generates per-session nonce values resistant to replay attacks. USB OTG supports keyboard-emulation (HID) credential readers that plug into any PC. The 28-SSOP package fits inside tamper-evident enclosures, and 128 KB Flash stores multi-protocol credential databases (MIFARE, DESFire, OSDP). RTCC supports time-based one-time password (TOTP) generation for two-factor authentication tokens per RFC 6238.
推荐
Industrial USB-to-UART Bridge
The PIC24FJ128GB202-I/SS can function as an industrial-grade USB-to-UART/RS-485 bridge with on-board crypto for secure field device communication. The four UART modules handle concurrent RS-232, RS-485, and LIN buses, while USB device CDC class bridges to PC configuration software. Hardware AES secures Modbus or DNP3 protocol messages between SCADA masters and field RTUs. The 12-bit ADC at 500 ksps samples 4-20 mA analog sensor loops, eliminating separate ADC chips. Industrial -40 C to +85 C operation tolerates factory floor environments with high EMI.
推荐
Medical Infusion Pump Controller
The PIC24FJ128GB202-I/SS suits portable medical infusion pumps and diagnostic devices requiring authenticated firmware and secure data export. Hardware AES secures patient telemetry transmitted to clinician tablets, while the 12-bit ADC at 500 ksps reads pump-motor current sensors and pressure transducers for closed-loop flow control. XLP sleep mode below 100 nA extends battery operation during patient transport between wards. USB OTG enables clinician connection for data download without proprietary docking stations. The crypto engine ensures IEC 62304-compliant firmware authenticity on each power-up.
推荐
推荐产品汇总
工程参考数据： PIC24FJ128GB202-I/SS ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | PIC24FJ128GA202-I/SS | PIC24FJ128GB202-E/SS | PIC24FJ64GB202-I/SS | PIC24FJ64GU202-I/SS | PIC24EP64MC202-I/SS |
|---|---|---|---|---|---|---|
| Package | 28-SSOP (0.209 in) | 28-SSOP (0.209 in) - same | 28-SSOP (0.209 in) - same | 28-SSOP (0.209 in) - same | 28-SSOP (0.209 in) - same | 28-SSOP (0.209 in) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Flash | 128 KB | 128 KB | 128 KB | 64 KB | 64 KB | 64 KB |
| RAM | 8 KB | 8 KB | 8 KB | 8 KB | 8 KB | 8 KB |
| Maximum CPU Speed | 32 MHz (16 MIPS) | 32 MHz (16 MIPS) | 32 MHz (16 MIPS) | 32 MHz (16 MIPS) | 32 MHz (16 MIPS) | 70 MHz (70 MIPS) |
| USB OTG | Yes | No | Yes | Yes | Yes | No |
| Hardware Crypto Engine | Yes (AES/DES/SHA-1) | No | Yes (AES/DES/SHA-1) | Yes (AES/DES/SHA-1) | No | No |
| Operating Temperature | -40 C to +85 C | -40 C to +85 C | -40 C to +125 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C |
关键差异点
- Only 28-SSOP 16-bit MCU with combined USB OTG and hardware crypto engine （对比 PIC24FJ128GA202-I/SS)
- XLP sleep current below 100 nA with RTCC retention （对比 PIC24EP64MC202-I/SS)
- 128 KB Flash with full crypto + USB stack in 28-SSOP （对比 PIC24FJ64GB202-I/SS)
设计说明
Estimated: at 32 MHz active and 3.3 V VDD, the PIC24FJ128GB202-I/SS draws approximately 15 mA core current per Microchip datasheet typical curves. Add 10 mA peak for USB OTG active PHY and 100 nA for XLP sleep with RTCC. For battery-powered designs, duty-cycle the MCU at <1% to leverage XLP sleep below 1 uA average, enabling multi-year CR2032 operation. Decouple VDD with 100 nF X7R plus 10 uF bulk placed within 5 mm of pins 13 and 28.
For USB OTG operation, the Microchip reference design recommends a 220 nF X7R capacitor on VUSB plus 47 uF bulk on the 5 V USB VBUS rail. Route the D+ and D- traces as a 90-ohm differential pair matched within 150 mil length delta, kept short and away from switching nodes. Per Microchip layout guidelines, place the 27 kHz or 48 MHz crystal within 10 mm of pins 6/7 (RA6/RA7) with a grounded guard ring to reduce EMI coupling into the USB PHY.
Do not omit the VCAP pin decoupling (1 uF to 10 uF X7R) - this is mandatory for the internal core voltage regulator. Per the Microchip datasheet, the device will fail to start without proper VCAP capacitance. Also note that the 12-bit ADC reference is software-configurable; use the dedicated VREF+/VREF- pins for high-accuracy measurements rather than VDD-based references, which add 5-10 mV of noise from switching regulators.
When using the hardware AES engine, ensure firmware does not interrupt the engine mid-block - the engine reads key material only once per session. Per the Microchip family reference manual, partial AES operations can leave key registers in indeterminate state, requiring a full reset. For SHA-1 hashing of large firmware images, use DMA to feed the engine and avoid CPU stalls up to 2000 cycles per 64-byte block.
合规信息
RoHS and lead-free confirmed per DigiKey distributor listing and Microchip product page. REACH compliance confirmed per Microchip corporate statement. AEC-Q100 not applicable - this is a general-purpose industrial MCU, not automotive-qualified; for AEC-Q100, consult the PIC24F GB2 automotive family.
