Overview
The STLC2690WTR, produced by STMicroelectronics, is a system-on-chip (SoC) that integrates Bluetooth V3.0 and FM radio transceiver functionalities. This device is designed for mobile applications such as mobile phones, smartphones, PDAs, and portable media players. It is packaged in a Wafer Level Chip Scale Package (WLCSP) with a height of 0.6 mm and a pitch of 0.4 mm, minimizing board space and optimizing power consumption for battery-powered devices. The STLC2690WTR enhances its predecessor, the STLC2593, by adding an FM transmitter, an audio processor, and A2DP media packet encapsulation, while improving RF performance and cost efficiency.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package Type | WLCSP61 | - |
| Package Dimensions | 3.315x3.56x0.6 mm | - |
| Pitch | 0.4 mm | - |
| Power Supply | 1.65 V to 1.95 V | V |
| Fast Clock Input Frequencies | 13, 16, 16.8, 19.2, 26, 32, 33.6, 38.4, 52 MHz | MHz |
| Slow Clock Input Frequencies | 32, 32.768 kHz | kHz |
| Current Consumption - Bluetooth Subsystem (Typical) | Complete power down: 1 μA, Deep Sleep mode: 18 μA, Functional Sleep mode: 1.47 mA | μA/mA |
| Current Consumption - FM Subsystem (Typical) | Varying depending on mode, e.g., RX mode: around 15 mA | mA |
| FM Band Support | 65.9 - 108 MHz | MHz |
Key Features
- Integration of Bluetooth V3.0 and FM radio transceiver on a single chip.
- Support for A2DP media packet encapsulation and SBC encoding/decoding.
- Ultra-low power architecture with multiple low-power modes and deep sleep modes.
- Efficient and flexible support for WLAN coexistence scenarios.
- Pitch-period error concealment (PPEC) and ARM7TDMI CPU with on-chip RAM and ROM.
- Audio processor with RAM and ROM, preloaded with SBC en-/decoding.
- Ciphering support up to 128 bits key.
- Communication interfaces: UART, SPI, PCM/I2S, I2C, and up to 22 additional flexibly programmable GPIOs.
- FM receiver and transmitter with worldwide FM band support and RDS/RBDS support.
Applications
- Mobile phones and smartphones.
- Personal Digital Assistants (PDAs).
- Portable media players.
- Other battery-powered mobile devices requiring Bluetooth and FM radio functionalities.
Q & A
- What is the package type of the STLC2690WTR? The STLC2690WTR is packaged in a Wafer Level Chip Scale Package (WLCSP) with 61 pins.
- What are the supported fast clock input frequencies? The supported fast clock input frequencies are 13, 16, 16.8, 19.2, 26, 32, 33.6, 38.4, and 52 MHz.
- What is the power supply range for the STLC2690WTR? The power supply range is from 1.65 V to 1.95 V.
- Does the STLC2690WTR support A2DP? Yes, it supports A2DP media packet encapsulation and SBC encoding/decoding.
- What are the low-power modes available in the STLC2690WTR? The device features ultra-low power architecture with multiple low-power modes, including deep sleep modes and host-power saving features.
- What communication interfaces are supported by the STLC2690WTR? It supports UART, SPI, PCM/I2S, I2C, and up to 22 additional flexibly programmable GPIOs.
- Does the STLC2690WTR support FM radio functionalities? Yes, it includes both a broadcast FM radio tuner and a broadcast FM radio transmitter with worldwide FM band support.
- How is the FM radio controlled in the STLC2690WTR? The FM radio can be controlled by the Host via a dedicated I2C interface or via the Bluetooth HCI interface.
- What is the typical current consumption of the Bluetooth subsystem in deep sleep mode? The typical current consumption in deep sleep mode is 18 μA.
- What is the significance of the ARM7TDMI CPU in the STLC2690WTR? The ARM7TDMI CPU is the main processor, which includes on-chip RAM and ROM, enabling multiple patches and upgrades.
