CSR8645 PDF Datasheet – Radio IC for Bluetooth 2.4GHz

Part Number: CSR8645

Function: Fully Qualified Single-Chip Bluetooth V4.0 System

Package: 68‑ball VFBGA 5.5 x 5.5 x 1mm 0.5mm pitch Type

Manufacturer: CSR ( Cambridge Silicon Radio Limited )


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BlueCore CSR8645 BGA is a product from CSR’s Connectivity Centre. It is a single-chip radio and
baseband IC for Bluetooth 2.4GHz systems including basic rate, EDR to 3Mbps and Bluetooth low energy. The integrated peripherals reduce the number of external components required, including no requirement for external codec, battery charger, SMPS, LDOs, balun or external program memory, ensuring minimum production costs.


1. 80MHz RISC MCU and 80MIPS Kalimba DSP
2. Internal ROM, serial flash memory and EEPROM interfaces
3. Stereo codec with 2 microphone inputs
4. Radio includes integrated balun
5. 5-band fully configurable EQ
6. CSR’s latest CVC technology for narrowband and wideband voice connections including wind noise reduction
7. Wideband speech supported by HFP v1.6 profile and mSBC codec
8. Voice recognition support for answering a call, enables true hands-free use
9. Wired audio support (USB and analogue)
10. Support for smartphone/tablet applications
11. Integrated dual switch-mode regulators, linear regulators and battery charger


1. Stereo headsets
2. Wired stereo headsets and headphones
3. Portable stereo speakers



CSR8645 PDF Datasheet