BCM2040
®
SINGLE-CHIP BLUETOOTH
®
MOUSE AND KEYBOARD
BCM2040 Functional Block Diagram
• Single-chip Bluetooth
®
device with fully integrated Human
Interface Device (HID) profile and full Bluetooth stack
On-board 8051 processor and RAM/ROM memory
Custom-integrated Bluetooth core processor has been
optimized to support the HID profile and minimize power
consumption
Bluetooth version 1.2 compliant including support for adaptive
frequency hopping and fast connect
Fully integrated radio eliminates all filters and matching
components and features a single-pin interface directly to
antenna
Direct interface to keyboard scan matrix with full support for
152 keys and user-customizable hot keys
Integrated quadrature signal decoder to support both ball and
optical mouse designs
Direct interface to LED and LCD displays
Drive capability to power external optoelectronics
ROM-based design eliminates external flash memories
Flash option offered to support feature development
Fully integrated low dropout (LDO) regulator provides
direction interface to batteries
Available in 64-pin fpBGA and 100-pin fpBGA packages
Cost-optimized solution for mouse and keyboard applications
- not a generic HCI device adapted for mouse and keyboard
Achieves lowest possible cost through the integration of all
external components
Direct interface to key scan matrix or ball/optical mouse
encoders
Replaces existing mouse or keyboard processor and memory
and adds Bluetooth functionality
Lowest power consumption solution provides greater than six-
month battery life
Adaptive frequency hopping support ensures full
interoperability and coexistence with WLAN enabled personal
computers
Optimized radio provides long-range, interference-free
operation in high-interference environments
Transmitter provides +4 dBm output power and satisfies Class
2 operation
Receiver provides -85 dBm receiver sensitivity
Single monolithic bulk CMOS device providing low cost and
high availability of manufacturing supply
AT commands (7.05 and 7.07)
FEATURES SUMMARY OF BENEFITS
APPLICATIONS


Bluetooth mouse
Bluetooth keyboard


Remote control HID devices
Game controllers
Combination mouse/keyboard
RF I/O
XTAL
Processing
Unit
2.4 GHz
Radio
RF Control
and Data
Bluetooth
Baseband
Core
GPIO
GPIO for
LEDs, LCD,
Power, etc.
T/R
Switch
Frequency
Synthesizer
Power
Mgmt
Keyboard
Matrix
Scanner
Scan
Matrix
3-Axis
Mouse
Signal
Decoder
Quadrature
Inputs
System Bus