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Microchip Technology IS1871SF-202-TRAY
- Part No.:
- IS1871SF-202-TRAY
- Manufacturer:
- Microchip Technology
- Category:
- RF Transceiver ICs
- Package:
- 32-VFQFN Exposed Pad
- Datasheet:
-
IS1871SF-202-TRAY.pdf
- Description:
- IC RF TXRX+MCU BLE 32QFN
- Quantity:
- Payment:
- Shipping:
Inventory:278
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Product details
Overview
IS1871SF-202-TRAY from Microchip Technology is a Bluetooth 5.0 Low Energy System-on-Chip (SoC) integrating a 2.4 GHz transceiver, 256 KB Flash, 15 GPIO pins, 6-channel 12-bit ADC (ENOB=10 bits), and AES-CMAC hardware engine in a 4 mm × 4 mm 32QFN package. It operates from 1.9V to 3.6V across –40°C to +85°C and supports beacon applications with –90 dBm Rx sensitivity and 0 dBm Tx output.
For engineers reviewing the IS1871SF-202-TRAY datasheet, IS1871SF-202-TRAY pinout, IS1871SF-202-TRAY application, or IS1871SF-202-TRAY equivalent, this page delivers verified technical context, validated pin functions, real-world use-value per application, and two confirmed alternative parts for IoT sensor nodes, wearable health monitors, proximity beacons, and secure payment peripherals.
Technical Context
The IS1871SF-202-TRAY implements an 8051 MCU core running Microchip's Bluetooth LE stack, with integrated RF transceiver compliant to Bluetooth v5.0 core specification, including enhanced throughput and FIPS-compliant encryption. Its PMU includes a 1.55V buck converter, 1.28V RFLDO, and 1.2V CLDO, enabling ultra-low-power operation down to 1.0 μA in shutdown mode.
It features a hybrid I/O architecture supporting configurable GPIO, ADC, and PWM on shared pins - specifically 6 ADC channels (AD0–AD5), 1 PWM channel (P2_1), and UART HCI interface (HCI_TXD/HCI_RXD). The default factory firmware enables ADC, PTS, GPIO, and PWM; SPI and I2C require firmware customization via Microchip support.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Bluetooth Version | Compliant with Bluetooth v5.0 Low Energy core specification, enabling enhanced throughput and interoperability with iOS/Android. |
| Operating Voltage | 1.9V to 3.6V supply range - compatible with single-cell Li-ion/Li-poly and coin-cell batteries without external regulation. |
| Rx Sensitivity | –90 dBm typical in BLE mode - ensures reliable link budget for indoor IoT deployments up to ~30 m line-of-sight. |
| ADC Resolution | 12-bit SDM-ADC with 10-bit ENOB at 32 kHz sampling - sufficient for battery voltage monitoring and ambient temperature sensing. |
| GPIO Count | 15 general-purpose I/O pins - supports mixed digital/analog functions including ADC inputs (AD0–AD5), PWM output (P2_1), and UART control (CTS/RTS). |
| Package | 32-pin QFN, 4 mm × 4 mm × 0.9 mm, 0.4 mm pitch - optimized for space-constrained wearables and compact beacons. |
| Operating Temp | –40°C to +85°C industrial grade - validated for outdoor sensors, industrial gateways, and medical-grade wearables. |
Pinout & Package
IS1871SF-202-TRAY is housed in a 32-pin QFN package (4 mm × 4 mm × 0.9 mm, 0.4 mm pitch) with exposed thermal pad. Pin functions are validated per DS60001371G Figures 1-4 and Table 1-2.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P1_2 | GPIO / ADC Input / I²C SCL | Multi-function pin usable as general I/O, analog input AD10, or I²C clock - requires firmware configuration. |
| P1_3 | GPIO / ADC Input / I²C SDA | Shared signal for data I/O, AD11, and I²C data - enables compact sensor interface without external level shifters. |
| HCI_TXD | UART Transmit Output | Asynchronous serial output driving host MCU at up to 921.6 kbps with hardware flow control (RTS/CTS). |
| HCI_RXD | UART Receive Input | Asynchronous serial input accepting host commands - tolerant of 0.7×VDD high-level threshold per spec. |
| P3_1 | GPIO / SPI Chip Select | Configurable as GPIO or active-low chip select for external SPI flash - supports over-the-air firmware updates. |
| P2_1 | GPIO / PWM Output | Dedicated 16-bit PWM output (PWM0) with selectable 32 kHz/1 MHz/16 MHz clock sources - drives LEDs or motor control. |
| VBAT | Main Power Input | Primary 1.9–3.6 V supply rail feeding buck converter and LDOs - requires 10 µF decoupling capacitor per datasheet layout guide. |
| AVDD | Analog Power Input | Input to CLDO, PALDO, and RFLDO regulators - must be decoupled with 1 µF X5R/X7R ceramic capacitor. |
Key Features
| Feature | Design Value |
|---|---|
| AES-CMAC Hardware Engine | On-die cryptographic accelerator enabling authenticated encryption for secure beacon payloads and payment handshakes without CPU overhead. |
| Integrated Temperature Sensor | Precision 12-bit/°C PTS with ±3°C accuracy across –40°C to +85°C - eliminates need for external thermal IC in fitness trackers. |
| Ultra-Low-Power Modes | 1.0–2.9 µA shutdown current and 60 µA reduced-current mode - extends coin-cell life to >1 year in periodic beacon advertising. |
| Flexible ADC Architecture | 6-channel 12-bit SDM-ADC with software-selectable input range (0–3.6 V) - supports simultaneous battery voltage and sensor monitoring. |
| Factory-Optimized BLE Stack | Pre-certified Bluetooth v5.0 stack with Apple iOS/Android interoperability - reduces qualification time and avoids RF test lab costs. |
Applications
| Wearable Health Monitor | Smart Proximity Beacon |
|---|---|
|
Use Scenario: Continuous heart-rate and motion tracking in wrist-worn fitness bands using optical and accelerometer sensors. IC Role / Device Role / Timing Role: IS1871SF-202-TRAY acts as BLE connectivity hub, managing sensor data acquisition via ADC and GPIO, then transmitting encrypted packets via HCI UART to host MCU. Use Value: Integrated 12-bit ADC (ENOB=10 bits) and ±3°C temperature sensor eliminate discrete analog front-end components, reducing BOM count by 3–4 parts. |
Use Scenario: Battery-powered indoor navigation tags deployed in retail stores to trigger location-based promotions on smartphones. IC Role / Device Role / Timing Role: IS1871SF-202-TRAY operates autonomously in beacon mode, broadcasting iBeacon/Eddystone frames with programmable advertising interval and RSSI-based proximity estimation. Use Value: –90 dBm receiver sensitivity and 0 dBm transmit power deliver stable 10–20 m detection range while sustaining >2-year coin-cell lifetime. |
| Secure Payment Peripheral | Industrial Sensor Node |
|
Use Scenario: Contactless payment dongle interfacing with point-of-sale terminals via BLE, requiring tamper-resistant data exchange. IC Role / Device Role / Timing Role: IS1871SF-202-TRAY performs AES-CMAC authentication and encrypts transaction data before transmission - no external security IC required. Use Value: Hardware-accelerated AES-CMAC reduces encryption latency to <10 µs and prevents side-channel leakage common in software-only implementations. |
Use Scenario: Wireless temperature/humidity node mounted in HVAC ducts or factory machinery, reporting data every 5 minutes. IC Role / Device Role / Timing Role: IS1871SF-202-TRAY samples ambient temperature via its internal PTS and battery voltage via ADC, then enters 1.0 µA shutdown between transmissions. Use Value: Industrial –40°C to +85°C rating and validated RF performance across that range ensure reliability in unconditioned environments without derating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Bluetooth Low Energy SoC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| nRF52810-QCAA | ARM Cortex-M4 core, 192 KB Flash, 24 GPIO, no integrated temperature sensor, higher peak current (13 mA Rx/Tx) | Better compute headroom for custom BLE profiles but requires external temp sensor and larger PCB area (5×5 mm QFN) | Select when needing >15 GPIO or custom protocol stack development; not drop-in due to different pinout and power sequencing. |
| CC2640R2FIPN | ARM Cortex-M3 core, 128 KB Flash, 31 GPIO, integrated DCDC, –96 dBm Rx sensitivity, 1.8–3.8 V operation | Superior RF sensitivity and wider voltage range, but larger 48-pin QFN (5×5 mm) and no factory-certified iBeacon firmware | Choose for longer-range beacons or battery chemistries below 1.9 V; requires full TI BLE stack integration effort. |
Compared with nRF52810-QCAA and CC2640R2FIPN, IS1871SF-202-TRAY offers the smallest footprint (4×4 mm), lowest shutdown current (1.0 µA), and pre-certified beacon firmware - making it optimal for cost-sensitive, space-constrained, battery-limited IoT endpoints where rapid time-to-market is critical.
Availability
IS1871SF-202-TRAY is available at Aetrix Electronics and suitable for wearable health monitors, smart proximity beacons, secure payment peripherals, and industrial sensor nodes requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for IS1871SF-202-TRAY includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Microchip Technology is a U.S.-based semiconductor company specializing in microcontrollers, analog devices, and wireless solutions, with over 30 years of embedded systems leadership and ISO 9001-certified manufacturing.
The IS1871SF-202-TRAY belongs to Microchip's Bluetooth Low Energy SoC product line, designed specifically for ultra-low-power, certified, and rapidly deployable IoT edge nodes - emphasizing minimal external components, factory firmware readiness, and industrial temperature resilience.
FAQ
What is the operating temperature range for IS1871SF-202-TRAY?
The IS1871SF-202-TRAY is rated for industrial operation from –40°C to +85°C, with full Bluetooth v5.0 RF certification and electrical performance validated across this range. This makes IS1871SF-202-TRAY suitable for outdoor beacons, automotive cabin sensors, and factory-floor monitoring where ambient extremes are expected.
Does IS1871SF-202-TRAY include an integrated temperature sensor?
Yes, IS1871SF-202-TRAY integrates a Precision Temperature Sensor (PTS) with 12-bit/°C resolution and ±3°C accuracy over –40°C to +85°C. It requires no external calibration and is accessible via dedicated register reads in the factory firmware - eliminating the need for discrete thermal ICs in wearables and environmental sensors.
How many ADC channels does IS1871SF-202-TRAY support?
IS1871SF-202-TRAY provides six 12-bit SDM-ADC channels (AD0–AD5), each mapped to specific GPIO pins (e.g., P0_0–P0_5, P1_2–P1_3). These support full-scale input ranges from 0 V to 3.6 V and deliver 10-bit effective number of bits (ENOB) at 32 kHz sampling - ideal for battery voltage and analog sensor monitoring.
Is IS1871SF-202-TRAY pin-compatible with IS1870SF-202-TRAY?
No, IS1871SF-202-TRAY is not pin-compatible with IS1870SF-202-TRAY. While both share functional similarity, IS1871SF-202-TRAY uses a 32-pin QFN (4×4 mm) versus IS1870SF-202-TRAY's 48-pin QFN (6×6 mm), and pin assignments differ significantly - e.g., P1_2 on IS1871 maps to P1_2 on IS1870, but IS1870 has additional ADC, PWM, and event counter pins absent in IS1871SF-202-TRAY.
What power modes does IS1871SF-202-TRAY support?
IS1871SF-202-TRAY supports three key low-power states: active mode (10 mA peak Tx/Rx), reduced-current mode (60 µA), and shutdown mode (1.0–2.9 µA). These are managed by the integrated PMU and Always-On Logic block, enabling multi-year battery life in beacon and sensor applications - all validated per DS60001371G Section 3.1.
IS1871SF-202-TRAY Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 32-VFQFN Exposed Pad
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- TxRx + MCU
- RF Family/Standard:
- Bluetooth
- Protocol:
- Bluetooth v5.0
- Modulation:
- -
- Frequency:
- 2.402GHz ~ 2.48GHz
- Data Rate (Max):
- 921.6kbps
- Power - Output:
- 0dBm
- Sensitivity:
- -90dBm
- Memory Size:
- 256kB Flash, 32kB ROM, 24kB SRAM
- Serial Interfaces:
- ADC, I2C, PWM, SPI, UART
- GPIO:
- 15
- Voltage - Supply:
- 1.9V ~ 3.6V
- Current - Receiving:
- 10mA
- Current - Transmitting:
- 10mA
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 32-QFN (4x4)
IS1871SF-202-TRAY FAQ
1.How can I place an order for IS1871SF-202-TRAY through Aetrix?
Please submit a Request for Quotation (RFQ) for IS1871SF-202-TRAY on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for IS1871SF-202-TRAY reliable?
The price and inventory of IS1871SF-202-TRAY are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IS1871SF-202-TRAY is usually 5 days.
3.What payment methods are accepted for IS1871SF-202-TRAY?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IS1871SF-202-TRAY transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for IS1871SF-202-TRAY?
IS1871SF-202-TRAY orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your IS1871SF-202-TRAY order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for IS1871SF-202-TRAY?
For technical support, including IS1871SF-202-TRAY datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IS1871SF-202-TRAY requirements.
6.How does Aetrix verify that IS1871SF-202-TRAY is sourced from the original manufacturer or authorized distributors?
All IS1871SF-202-TRAY products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that IS1871SF-202-TRAY meets industry standards.
7.What is the process for return or replacement of IS1871SF-202-TRAY?
All IS1871SF-202-TRAY units undergo pre-shipment inspection (PSI). If there is an issue with IS1871SF-202-TRAY, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The IS1871SF-202-TRAY part is unused and in its original packaging.
Return procedure for IS1871SF-202-TRAY:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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