My Inquiry
My Account
STMicroelectronics STA2500DTR
- Part No.:
- STA2500DTR
- Manufacturer:
- STMicroelectronics
- Category:
- RF Transceiver ICs
- Package:
- 48-LFBGA
- Datasheet:
-
STA2500DTR.pdf
- Description:
- IC RF TXRX+MCU BLE 48LFBGA
- Quantity:
- Payment:
- Shipping:
Inventory:1,925
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
STA2500DTR from STMicroelectronics is a single-chip Bluetooth 2.1 + EDR ("Lisbon") baseband and RF transceiver IC optimized for automotive telematics and navigation systems. It integrates ARM7TDMI CPU, on-chip ROM/patch RAM, HCI transport interfaces (UART/SPI/PCM), and supports Class 1.5 transmit power (>4 dBm), adaptive frequency hopping (AFH), and eSCO links with QoS. Designed for battery-powered in-vehicle units requiring low-power operation and rapid integration.
For engineers reviewing the STA2500DTR datasheet, STA2500DTR pinout, STA2500DTR application, or STA2500DTR equivalent, key selection considerations include its automotive-grade operating temperature (−40°C to +85°C), dual-clock support (9.6–38.4 MHz system clock + 3.2/32/32.768 kHz low-power clock), HCI H4/enhanced H4 transport, and deep-sleep mode with dual wake-up mechanism (host- or device-initiated).
Technical Context
The STA2500DTR implements a complete Bluetooth controller stack up to HCI level using an ARM7TDMI core and Ericsson-licensed baseband technology. It supports point-to-multipoint (7-slave scatternet), ACL/SCO/eSCO links, secure simple pairing, sniff subrating, and link supervision timeout - all compliant with Bluetooth v2.1+EDR "Lisbon" specification.
Its RF architecture includes integrated GFSK/π/4-DQPSK/8-DPSK modulation, programmable TX output power (Class 2 and Class 1.5), auto-calibrated VCO and filters, and five configurable low-power modes including deep sleep with host-power saving feature. WLAN coexistence is supported via five hardware-assisted arbitration algorithms (PTA, two-wire, AWMA, etc.).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Bluetooth Version | v2.1 + EDR ("Lisbon") - Enables faster connection setup, extended inquiry response, encryption pause/resume, and secure simple pairing for automotive user provisioning. |
| TX Output Power | Class 1.5 (>4 dBm) - Supports extended range in vehicle cabin environments without external PA, reducing BOM count. |
| Operating Temperature | −40°C to +85°C - Qualified for under-hood and dashboard-mounted automotive applications per AEC-Q100 stress requirements. |
| System Clock Input | 9.6 / 10 / 13 / 16 / 16.8 / 19.2 / 26 / 33.6 / 38.4 MHz - Flexible crystal or oscillator sourcing enables design reuse across platforms. |
| Low-Power Clock | 3.2 / 32 / 32.768 kHz - Enables ultra-low-power deep-sleep mode with host wake-up capability and precise timing for periodic BLE-like polling. |
| HCI Transport | H4 UART (≤4 MHz) & enhanced H4 SPI (≤13 MHz) - Provides robust, low-latency host interface options compatible with common automotive microcontrollers. |
| Power Supply | Core: 2.65–2.85 V; I/O: 1.65–2.85 V (BT_VIO_A), 1.17–2.85 V (BT_VIO_B) - Supports mixed-voltage SoC interfacing and legacy 1.8 V/2.5 V logic domains. |
Pinout & Package
LFBGA48 (6 × 6 × 1.4 mm, 0.8 mm pitch) package with exposed thermal pad; RoHS-compliant, automotive-qualified reflow profile.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| BT_RESETN | Active-low reset input | Asynchronous hardware reset; must be held low ≥100 ns before release to ensure reliable initialization. |
| BT_WAKEUP | Wake-up request input | Triggers exit from deep-sleep mode; supports Schmitt-triggered edge detection for noise immunity in automotive EMI environments. |
| BT_REF_CLK_IN | System clock input | Accepts sine-wave (0.27–1.8 Vpp) or digital clock (CMOS-compatible); enables flexible clock source selection without external buffer. |
| BT_LP_CLK | Low-power clock input | Drives internal timer during deep-sleep; powered by BT_VIO_B rail to maintain timing accuracy at <1 µA quiescent current. |
| BT_UART_TX / BT_UART_RX | HCI UART data lines | Full-duplex H4 transport interface; supports flow control handshake for reliable firmware download and audio streaming. |
| BT_SPI_MOSI / MISO / SCLK / CSN | HCI SPI interface | Enhanced H4 SPI supports burst transfers and interrupt-driven packet handling; eliminates UART framing overhead in high-throughput use cases. |
| BT_PCM_CLK / SYNC / DATA | PCM voice interface | Supports A-law/µ-law and linear PCM formats at 2.048 MHz; enables direct connection to automotive audio codecs without external conversion. |
| BT_GPIO[0:9] | Configurable general-purpose I/O | Programmable as inputs/outputs with pull-up/down; used for peripheral control (e.g., antenna switch, LNA enable, status LEDs). |
Key Features
| Feature | Design Value |
|---|---|
| ARM7TDMI CPU + patch RAM | Enables field-upgradable firmware patches without ROM re-spin; supports multiple SW parameter files for regional certification compliance. |
| Adaptive Frequency Hopping (AFH) | Dynamically excludes interfered channels using real-time RSSI measurement - critical for robust operation near infotainment RF sources. |
| Channel Quality Driven Data Rate (CQDDR) | Automatically selects optimal packet type (e.g., DH5 vs. DM1) based on instantaneous link SNR - maximizes throughput in noisy vehicle cabins. |
| WLAN Coexistence Support | Five hardware-assisted arbitration mechanisms (PTA, two-wire, AWMA) reduce cross-technology interference without host CPU intervention. |
| Deep Sleep Mode with Dual Wake-up | Sub-10 µA quiescent current; wake-up triggered either by host command or Bluetooth event (e.g., page scan timeout), enabling always-on connectivity. |
Applications
| Telematics Control Unit (TCU) | In-Vehicle Navigation System |
|---|---|
Use Scenario: Real-time vehicle diagnostics and remote OTA updates via paired smartphone or cellular gateway. IC Role / Device Role / Timing Role: Bluetooth controller handling secure HCI communication, eSCO voice channel for hands-free calling, and AFH-managed data channel for firmware transfer. Use Value: Eliminates need for discrete baseband + RF + MCU; reduces PCB area by 40% and enables certified Class 1.5 range (≥10 m) in metal-rich dashboard enclosures. |
Use Scenario: Turn-by-turn voice guidance synchronized with map rendering on head-unit display. IC Role / Device Role / Timing Role: PCM interface delivers A-law encoded audio directly to audio codec; low-power clock maintains accurate timing during GPS cold-start periods. Use Value: Achieves ≤20 ms end-to-end audio latency with jitter-controlled 32.768 kHz reference, meeting automotive speech intelligibility standards (ISO 26262 ASIL-B timing constraints). |
| Portable Navigation Device (PND) | Automotive Infotainment Gateway |
Use Scenario: Battery-powered PND with Bluetooth tethering to smartphone for live traffic and weather data. IC Role / Device Role / Timing Role: Dual-clock architecture allows 32 kHz RTC wake-up every 5 s to poll for new data while maintaining <15 µA average current draw. Use Value: Extends battery life to >12 hours on 1200 mAh Li-ion cell; Class 1.5 TX power ensures stable link even when device is mounted in center console cupholder. |
Use Scenario: Central gateway managing Bluetooth audio streaming, phonebook sync, and vehicle sensor telemetry across multiple ECUs. IC Role / Device Role / Timing Role: Multi-role controller supporting simultaneous ACL (data), eSCO (audio), and SCO (voice call) links with QoS prioritization. Use Value: Supports 7-device scatternet topology with guaranteed bandwidth allocation for safety-critical alerts (e.g., ADAS warnings over Bluetooth LE fallback path). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Bluetooth controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CSR BC04-External | Discrete baseband + RF solution; requires external flash, crystal, and LDOs - higher BOM cost and larger footprint. | Lacks integrated deep-sleep wake-up logic and WLAN coexistence hardware - demands additional host CPU cycles for interference management. | Preferred only where legacy CSR software stack compatibility is mandatory; not recommended for new automotive designs targeting ASIL-B functional safety. |
| TI CC2564C | Bluetooth 4.0 dual-mode (BR/EDR + BLE); higher peak current (18 mA RX), no native Class 1.5 TX support - requires external PA for equivalent range. | Optimized for consumer wearables; lacks automotive temperature qualification and dedicated eSCO QoS features for voice call reliability. | Suitable for hybrid infotainment systems needing BLE beaconing, but STA2500DTR delivers superior voice latency and thermal stability in −40°C to +85°C environments. |
Compared with CSR BC04-External and TI CC2564C, the STA2500DTR provides lower system-level power consumption in deep-sleep, native automotive temperature range qualification, and hardware-accelerated WLAN coexistence - making it the optimal choice for cost-sensitive, safety-aware telematics modules requiring zero-latency voice handover.
Availability
STA2500DTR is available at Aetrix Electronics and suitable for automotive telematics, in-vehicle navigation, and portable navigation devices requiring stable component supply across extended product lifecycles.
Supply support for STA2500DTR 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
STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, with R&D and manufacturing facilities across Europe, Asia, and the Americas.
The STA2500DTR belongs to ST's automotive-qualified Bluetooth SoC product line, designed specifically to meet stringent AEC-Q100 reliability requirements and support rapid integration into telematics and infotainment systems with minimal external components.
FAQ
What is the maximum supported system clock frequency for the STA2500DTR?
The STA2500DTR supports system clock frequencies of 9.6, 10, 13, 16, 16.8, 19.2, 26, 33.6, and 38.4 MHz. At 38.4 MHz, the device achieves full Bluetooth 2.1+EDR throughput with minimal CPU loading, enabling concurrent ACL and eSCO link handling without packet loss in high-interference vehicle cabins.
Does the STA2500DTR support Bluetooth Low Energy (BLE)?
No, the STA2500DTR implements only Bluetooth Basic Rate/Enhanced Data Rate (BR/EDR) v2.1+EDR. It does not include BLE protocol stack, radio hardware, or associated PHY layers. For dual-mode applications, a separate BLE SoC or module must be integrated alongside the STA2500DTR.
How is Class 1.5 transmit power achieved without an external power amplifier?
Class 1.5 operation (>4 dBm) is enabled through internal RF power stage optimization and calibrated output matching network integrated into the LFBGA48 die. The device achieves this output level directly from the RF pin with ≤15% EVM at 38.4 MHz clock, eliminating need for external PA and associated matching components.
Can the STA2500DTR operate with a 1.8 V I/O supply while the core runs at 2.75 V?
Yes. The STA2500DTR supports independent I/O voltage rails: BT_VIO_A (1.65–2.85 V) for main digital interfaces (UART/SPI/PCM/GPIO), and BT_VIO_B (1.17–2.85 V) for low-power clock domain. This allows direct interfacing with 1.8 V microcontrollers while maintaining optimal core voltage for RF stability.
STA2500DTR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 48-LFBGA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- TxRx + MCU
- RF Family/Standard:
- Bluetooth
- Protocol:
- Bluetooth v2.1 +EDR
- Modulation:
- 8DPSK, DQPSK, GFSK
- Frequency:
- 2.4GHz
- Data Rate (Max):
- 3Mbps
- Power - Output:
- 8dBm
- Sensitivity:
- -88dBm
- Memory Size:
- -
- Serial Interfaces:
- I2C, JTAG, SPI, UART
- GPIO:
- 10
- Voltage - Supply:
- 1.65V ~ 2.85V
- Current - Receiving:
- 35.4mA
- Current - Transmitting:
- 23mA ~ 35.4mA
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 48-LFBGA (6x6)
STA2500DTR FAQ
1.How can I place an order for STA2500DTR through Aetrix?
Please submit a Request for Quotation (RFQ) for STA2500DTR 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 STA2500DTR reliable?
The price and inventory of STA2500DTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STA2500DTR is usually 5 days.
3.What payment methods are accepted for STA2500DTR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STA2500DTR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STA2500DTR?
STA2500DTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STA2500DTR 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 STA2500DTR?
For technical support, including STA2500DTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STA2500DTR requirements.
6.How does Aetrix verify that STA2500DTR is sourced from the original manufacturer or authorized distributors?
All STA2500DTR 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 STA2500DTR meets industry standards.
7.What is the process for return or replacement of STA2500DTR?
All STA2500DTR units undergo pre-shipment inspection (PSI). If there is an issue with STA2500DTR, 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 STA2500DTR part is unused and in its original packaging.
Return procedure for STA2500DTR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
STA2500DTR Tags
-
ESP32-D0WD-V3
Espressif Systems
-
ESP8266EX
Espressif Systems
-
ESP32-S3
Espressif Systems
-
NRF24L01P-R7
Nordic Semiconductor ASA
-
NRF24L01P-R
Nordic Semiconductor ASA
-
ESP32-U4WDH
Espressif Systems
-
DA14531-00000OG2
Renesas
-
ESP32-C6FH4
Espressif Systems
-
DA14531-00000FX2
Renesas
-
NRF24L01P-T
Nordic Semiconductor ASA
-
NRF52810-QCAA-R
Nordic Semiconductor ASA
-
ESP32-S3FN8
Espressif Systems
Tech Hub
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
