BC41B143A-DS-003PC Datasheet, PDF (79/94 Pages) List of Unclassifed Manufacturers – BlueCore 4-ROM Plug-n-Go Single Chip Bluetooth v2.0 + EDR System

Device Terminal Descriptions
10.9 I²C Interface
PIO[8:6] can be used to form a master I²C interface. The interface is formed using software to drive these lines.
Therefore, it is suited only to relatively slow functions such as driving a dot matrix liquid crystal display (LCD), keyboard
scanner or EEPROM.
Notes:
PIO lines need to be pulled-up through 2.2kΩ resistors.
PIO[7:6] dual functions, UART bypass and EEPROM support, therefore, devices using an EEPROM cannot
support UART bypass mode.
For connection to EEPROMs, refer to CSR documentation on I²C EEPROMS for use with BlueCore. This provides
information on the type of devices currently supported.
+1.8V
10nF
2.2KΩ 2.2KΩ 2.2KΩ
PIO[8]
PIO[6]
PIO[7]
U2
8 _{VCC A0} 1
7 _WP
A1 ²
6 _{SCL A2} 3
5 _{SDA GND} 4
Serial EEPROM
(AT24C16A)
Figure 10.29: Example EEPROM Connection
BC41B143A-ds-003Pc
Advance Information
© Cambridge Silicon Radio Limited 2005
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