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Microchip Technology IS1870SF-202
- Part No.:
- IS1870SF-202
- Manufacturer:
- Microchip Technology
- Category:
- RF Transceiver ICs
- Package:
- 48-VFQFN Exposed Pad
- Datasheet:
-
IS1870SF-202.pdf
- Description:
- IC RF TXRX+MCU BLE 48QFN
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
IS1870SF-202 from Microchip Technology is a Bluetooth 5.0 Low Energy System-on-Chip (SoC) integrating a 2.4 GHz transceiver, 8051 MCU core, 256 KB embedded Flash, 16-channel 12-bit ADC (ENOB = 10 bits), and AES-CMAC hardware engine. It operates from 1.9V to 3.6V across –40°C to +85°C and delivers –90 dBm Rx sensitivity with 0 dBm typical Tx output for IoT sensor node applications.
For engineers reviewing the IS1870SF-202 datasheet, IS1870SF-202 pinout, IS1870SF-202 application, or IS1870SF-202 equivalent, this page provides verified package mapping (48QFN, 6×6 mm), confirmed RF/PMU/MCU block integration, GPIO-peripheral allocation (31 GPIO, 4 PWM, UART/SPI/I²C), and real-world low-power design constraints including 1.0–2.9 μA shutdown current and 60 μA reduced-current mode.
Technical Context
The IS1870SF-202 implements a fully integrated Bluetooth 5.0 LE radio stack on an 8051-based MCU with ROM-resident protocol handling, 24 KB SRAM, and 256 KB Flash for firmware upgrades. Its RF subsystem includes a 2.402–2.480 GHz transceiver with digital RSSI, programmable Tx power (–25 to +3 dBm), and interference rejection (–32 dB adjacent channel ≥±3 MHz).
Power management combines a 1.55 V buck converter, four LDOs (1.28 V RFLDO, 1.55 V PALDO, 1.2 V CLDO, 1.2 V ULPC), and Always-On logic supporting RTC wake-up and battery voltage monitoring. The 12-bit SDM-ADC supports 16-channel input with 0–3.6 V full-scale range and ±2 LSB INL at 32 kHz sampling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Bluetooth Version | Compliant with Bluetooth Core Specification v5.0 LE; enables enhanced throughput and beacon support. |
| Rx Sensitivity | –90 dBm typical in BLE mode; ensures reliable link budget in noisy 2.4 GHz ISM band environments. |
| Operating Voltage | 1.9 V to 3.6 V; compatible with single-cell Li-ion, Li-poly, or dual-cell alkaline battery systems. |
| Operating Temperature | –40°C to +85°C; qualified for industrial and outdoor IoT deployments without derating. |
| ADC Resolution | 12-bit SDM architecture with 10-bit ENOB; supports precision battery voltage and ambient temperature sensing. |
| GPIO Count | 31 general-purpose I/O pins; enables direct interface to sensors, LEDs, buttons, and external peripherals. |
| Shutdown Current | 1.0–2.9 μA; extends battery life in long-idle wearable or remote sensor applications. |
| Package | 48-pin QFN, 6 mm × 6 mm × 0.9 mm, 0.4 mm pitch; surface-mount compatible with standard reflow profiles. |
Pinout & Package
IS1870SF-202 is housed in a 48-lead QFN package (6 mm × 6 mm × 0.9 mm, 0.4 mm pitch) with exposed thermal pad. Pin functions are validated per DS60001371G, Table 1-2.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P1_0 | GPIO / ADC Input | Multi-function pin supporting digital I/O and analog input AD8; used for sensor signal acquisition. |
| HCI_TXD / HCI_RXD | UART Interface | Full-duplex HCI UART up to 921.6 kbps with hardware flow control (RTS/CTS); connects to host MCU. |
| P3_1–P3_4 | SPI Bus | Configurable as SPI master (MOSI/MISO/SCLK/CSN); interfaces with flash memory or external sensors. |
| XO_P / XO_N | Crystal Interface | Differential 32 MHz crystal input for RF clock generation; requires external 32 MHz fundamental-mode crystal. |
| VBAT / BK_IN | Power Input | Main supply input (1.9–3.6 V); feeds buck converter and internal LDOs; requires 10 μF decoupling capacitor. |
| Rx / Tx | RF Path | Dedicated differential RF receive and transmit terminals; matched to 50 Ω antenna interface per layout guidelines. |
| P2_1–P2_5 | PWM Output | Four independent 16-bit PWM channels (P2_1, P2_2, P2_3, P2_5); supports LED dimming or motor control. |
| RST_N | Reset Input | Active-low asynchronous reset; driven by external supervisor or host MCU for controlled initialization. |
Key Features
| Feature | Design Value |
|---|---|
| AES-CMAC Hardware Engine | On-die cryptographic accelerator enabling FIPS-compliant secure pairing and data encryption without CPU overhead. |
| Integrated Power Management Unit | Includes 1.55 V buck converter and four LDOs (RFLDO, PALDO, CLDO, ULPC); eliminates need for external PMIC in compact designs. |
| Always-On Logic with RTC | Dedicated hardware state machine maintains wake-up timer and I/O event detection during deep sleep; sustains BLE connection at <60 μA. |
| 16-Channel 12-bit ADC | SDM-based converter with 0–3.6 V input range and selectable 32 kHz/1 MHz/16 MHz clock; supports simultaneous battery and sensor monitoring. |
| Flexible Peripheral Mapping | GPIO pins multiplexed with ADC, PWM, UART, SPI, I²C, and event counter functions; configurable via firmware without hardware change. |
| Temperature Sensor | Digital output PTS with ±3°C accuracy over –40°C to +85°C; provides 12-bit/°C resolution for environmental monitoring. |
Applications
| Wearable Fitness Tracker | Smart Weighing Scale |
|---|---|
|
Use Scenario: Compact wrist-worn device measuring heart rate, motion, and ambient temperature with BLE telemetry to smartphone. IC Role / Device Role / Timing Role: IS1870SF-202 serves as primary BLE SoC managing sensor data acquisition, local processing, and encrypted advertising packets. Use Value: Integrated 16-channel ADC and precision temperature sensor eliminate external signal conditioning; 1.0 μA shutdown current enables multi-week battery life. |
Use Scenario: Battery-powered bathroom scale transmitting weight, BMI, and body composition metrics via BLE to health apps. IC Role / Device Role / Timing Role: IS1870SF-202 acts as BLE interface controller, reading load cell ADC outputs and formatting GATT characteristics for iOS/Android compatibility. Use Value: Factory-certified Bluetooth 5.0 LE stack ensures interoperability with Apple HealthKit and Google Fit; 31 GPIO enable direct HX711 interface and LED feedback. |
| Industrial Proximity Beacon | Secure Payment Terminal |
|
Use Scenario: Asset-tracking beacon mounted on machinery, broadcasting location and status using iBeacon/Eddystone protocols. IC Role / Device Role / Timing Role: IS1870SF-202 operates in host-less beacon mode, generating periodic advertising packets with encrypted payload and RSSI-based proximity estimation. Use Value: On-chip AES-CMAC engine secures beacon identity; –90 dBm sensitivity ensures reliable detection at >10 m range in factory RF environments. |
Use Scenario: Portable point-of-sale terminal performing contactless payment via NFC-BLE hybrid handshake and transaction signing. IC Role / Device Role / Timing Role: IS1870SF-202 handles BLE pairing, secure key exchange, and encrypted command/response framing between terminal and mobile wallet. Use Value: FIPS-compliant AES-CMAC hardware accelerates cryptographic operations; 256 KB Flash stores secure boot firmware and payment profile certificates. |
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 |
|---|---|---|---|
| nRF52833 DK | ARM Cortex-M4F core, 512 KB Flash, 128 KB RAM; higher compute headroom but larger 7×7 mm QFN package. | Preferred for complex mesh networking or concurrent multi-protocol (BLE + Thread/Zigbee) implementations. | Select nRF52833 DK when application requires >256 KB code space or floating-point math acceleration not available in IS1870SF-202's 8051 core. |
| CC2642R1F | ARM Cortex-M4F, 352 KB Flash, 80 KB RAM; integrated RF front-end with higher +5 dBm Tx power and better EMI immunity. | Better suited for high-noise industrial gateways requiring extended range and robust coexistence. | Choose CC2642R1F where –90 dBm sensitivity is insufficient or regulatory certification for Class 1 operation is mandatory. |
Compared with nRF52833 DK and CC2642R1F, the IS1870SF-202 offers lower system BOM cost through integrated PMU and smaller 6×6 mm footprint, while delivering certified BLE 5.0 functionality with minimal external components - ideal for cost-sensitive, space-constrained consumer IoT endpoints.
Availability
IS1870SF-202 is available at Aetrix Electronics and suitable for wearable fitness trackers, smart weighing scales, industrial beacons, and secure payment terminals requiring stable component supply across automotive-grade temperature ranges and multi-year production cycles.
Supply support for IS1870SF-202 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 manufacturer specializing in microcontrollers, analog devices, and connectivity solutions for embedded systems.
The IS1870SF-202 belongs to Microchip's Bluetooth Low Energy SoC product line, designed specifically for ultra-low-power, small-form-factor IoT edge nodes requiring certified wireless connectivity and integrated security without external processors.
FAQ
What is the operating temperature range of the IS1870SF-202?
The IS1870SF-202 is rated for continuous operation from –40°C to +85°C, meeting industrial temperature requirements. This range is validated per DS60001371G Section 3.0 and applies to all electrical and RF specifications, including –90 dBm receiver sensitivity and 0 dBm transmit output power.
Does the IS1870SF-202 include an integrated crystal oscillator?
The IS1870SF-202 integrates a 32 kHz ultra-low-power oscillator for RTC use but requires an external 32 MHz fundamental-mode crystal connected to XO_P/XO_N pins for RF clock generation. The datasheet confirms this requirement in Section 1.0 and Figure 1-3 pin assignment.
How many ADC channels does the IS1870SF-202 support, and what is their resolution?
The IS1870SF-202 supports 16-channel 12-bit SDM-based ADC with effective number of bits (ENOB) of 10 bits at 32 kHz sampling. Full-scale input range is 0–3.6 V, and performance is characterized per Table 3-1 in DS60001371G for the -202 temperature grade.
Is the IS1870SF-202 pin-compatible with the IS1871SF-202?
No, the IS1870SF-202 (48-pin QFN) and IS1871SF-202 (32-pin QFN) have different pin counts, layouts, and peripheral allocations (e.g., 31 vs. 15 GPIO, 16 vs. 6 ADC channels). They share functional similarity but are not pin-compatible; PCB redesign is required for substitution.
What power-saving modes are available on the IS1870SF-202?
The IS1870SF-202 supports three defined low-power states: "Reduced current consumption" mode (60 μA typical), "Shutdown" mode (1.0–2.9 μA), and active BLE advertising (230 μA average). These are documented in Section 3.1.1 and Table 3-1 of DS60001371G, with timing controlled by Always-On logic.
IS1870SF-202 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 48-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- 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:
- 31
- Voltage - Supply:
- 1.9V ~ 3.6V
- Current - Receiving:
- 10mA
- Current - Transmitting:
- 10mA
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 48-QFN (6x6)
IS1870SF-202 FAQ
1.How can I place an order for IS1870SF-202 through Aetrix?
Please submit a Request for Quotation (RFQ) for IS1870SF-202 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 IS1870SF-202 reliable?
The price and inventory of IS1870SF-202 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IS1870SF-202 is usually 5 days.
3.What payment methods are accepted for IS1870SF-202?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IS1870SF-202 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for IS1870SF-202?
IS1870SF-202 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your IS1870SF-202 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 IS1870SF-202?
For technical support, including IS1870SF-202 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IS1870SF-202 requirements.
6.How does Aetrix verify that IS1870SF-202 is sourced from the original manufacturer or authorized distributors?
All IS1870SF-202 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 IS1870SF-202 meets industry standards.
7.What is the process for return or replacement of IS1870SF-202?
All IS1870SF-202 units undergo pre-shipment inspection (PSI). If there is an issue with IS1870SF-202, 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 IS1870SF-202 part is unused and in its original packaging.
Return procedure for IS1870SF-202:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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