Microchip Technology ATBTLC1000A-MU-Y

Overview

ATBTLC1000A-MU-Y from Microchip Technology is an ultra-low power Bluetooth 5.0 System-in-Package (SiP) integrating ARM Cortex-M0 MCU, BLE transceiver, MAC, PA, T/R switch, and PMU. It operates as a BLE link controller and data pump with external host MCU, delivers -95 dBm RX sensitivity, +3.5 dBm TX output, and consumes only 2.01 µA in sleep mode. It supports proximity, heart rate, and thermometer applications via pre-certified SIG stack.

For engineers reviewing the ATBTLC1000A-MU-Y datasheet, ATBTLC1000A-MU-Y pinout, ATBTLC1000A-MU-Y application, or ATBTLC1000A-MU-Y equivalent, key selection criteria include its QFN-32 4×4 mm package, UART-based host interface requiring only two GPIOs and one interrupt line, integrated DC/DC converter for 1.8–4.3 V battery operation, and certified BLE 5.0 interoperability with QDID 117593.

Technical Context

The ATBTLC1000A-MU-Y implements a dual-oscillator clock architecture with integrated 26 MHz crystal oscillator and 32.768 kHz RTC XO, enabling precise timing for BLE advertising and connection intervals. Its BLE subsystem includes dedicated hardware accelerators for AES-128 and SHA-256, supporting secure pairing and encrypted ATT/GATT transactions.

Power management is handled by a fully integrated buck DC/DC converter with external 4.7 µH inductor and 4.7 µF capacitor, delivering regulated 1.2 V to digital and RF domains while maintaining 85% efficiency at 3 V input and 10 mA load. Device state control uses CHIP_EN for global enable/disable and AO_GPIO_0 for Ultra_Low_Power entry/exit.

Key Specifications

Pinout & Package

The ATBTLC1000A-MU-Y is housed in a 32-pin QFN package measuring 4 mm × 4 mm × 0.85 mm with exposed thermal paddle. The paddle must be soldered to system ground for thermal dissipation and RF stability.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar BLE SiP applications.

Compared with DA14531MOD-00F01002 and nRF52810-QFAA-R, the ATBTLC1000A-MU-Y provides certified BLE 5.0 stack in ROM, integrated DC/DC converter, and lowest sleep current-making it optimal for long-life, drop-in BLE peripheral designs where time-to-certification and battery longevity are critical.

Availability

ATBTLC1000A-MU-Y is available at Aetrix Electronics and suitable for wearable health monitors, smart home sensor nodes, industrial asset trackers, and medical diagnostic patches requiring stable component supply across extended production lifecycles.

Supply support for ATBTLC1000A-MU-Y 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, FPGA, and connectivity solutions with ISO 9001-certified manufacturing and global distribution.

The ATBTLC1000A-MU-Y belongs to Microchip's Bluetooth Low Energy SiP product line, designed specifically for ultra-low-power, certified, host-processor-offload wireless peripherals in space-constrained IoT endpoints.

FAQ

What is the Bluetooth certification status of the ATBTLC1000A-MU-Y?

The ATBTLC1000A-MU-Y carries Bluetooth SIG QDID 117593 and is fully certified for Bluetooth Low Energy 5.0 interoperability. This means the ATBTLC1000A-MU-Y has passed all required qualification tests-including RF conformance, protocol stack validation, and profile compliance-enabling immediate integration into end products without additional SIG testing or declaration fees.

Does the ATBTLC1000A-MU-Y require external flash memory for operation?

No, the ATBTLC1000A-MU-Y does not require external flash memory. Its 128 KB ROM contains the complete, qualified Bluetooth SIG protocol stack (GAP, GATT, ATT, SMP), and 128 KB RAM provides runtime storage for application code and data. The ATBTLC1000A-MU-Y executes firmware directly from internal memory, eliminating boot delays and external component dependencies.

How is power managed on the ATBTLC1000A-MU-Y to achieve 2.01 µA sleep current?

The ATBTLC1000A-MU-Y achieves 2.01 µA sleep current through hierarchical power gating: the ARM Cortex-M0 and BLE digital core are fully powered down in Ultra_Low_Power mode, while only the always-on domain (including AO_GPIO_0 and RTC oscillator) remains active. The integrated DC/DC converter enters ultra-low-quiescent mode, and all 12 digital GPIOs retain programmable pull-up/down configuration without leakage. This architecture is validated across -40°C to +85°C.

Can the ATBTLC1000A-MU-Y operate without an external 26 MHz crystal?

Yes, the ATBTLC1000A-MU-Y can operate without an external 26 MHz crystal by using its integrated 26 MHz RC oscillator. However, BLE 5.0 timing specifications (e.g., advertising interval accuracy, connection event jitter) require ±50 ppm stability, which the RC oscillator cannot guarantee. For certified BLE operation, the external 26 MHz crystal (XO_P/XO_N pins) is mandatory; the RC oscillator is intended only for non-BLE debug or initialization phases.

What host interface options does the ATBTLC1000A-MU-Y support?

The ATBTLC1000A-MU-Y supports UART-based host communication in two modes: default 6-wire (UART1_RXD, UART1_TXD, UART1_RTS, UART1_CTS, CHIP_EN, and host wake-up) and configurable 4-wire (UART1_RXD, UART1_TXD, CHIP_EN, and host wake-up). It does not support native SPI or I2C host interfaces-those peripherals are for internal use only. The ATBTLC1000A-MU-Y requires exactly two host GPIOs plus one interrupt line, minimizing host-side resource usage.