bc41b143a07 ETC-unknow, bc41b143a07 Datasheet - Page 83

• Manufacturer Part Number: bc41b143a07
• Description: Single Chip Bluetooth
• Manufacturer: ETC-unknow

9.10
PIO[8:6] can be used to form a master I
Therefore, it is suited only to relatively slow functions such as driving a dot matrix liquid crystal display (LCD), keyboard
scanner or EEPROM.
Any three PIOs can be used as a master I
The strong pull-ups in the PIO pads eliminate the need for external pull-up resistors.
Notes:
9.11
An OR function exists for clock enable signals from a host controller and BlueCore4-ROM where either device can turn
on the clock without having to wake up the other device. PIO[3] can be used as the host clock enables input and PIO[2]
can be used as the OR output with the TCXO enable signal from BlueCore4-ROM.
CS-101564-DSP12
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 I
information on the type of devices currently supported.
I
TCXO Enable OR Function
2
C Interface
PIO[8]
PIO[6]
PIO[7]
Figure 9.27: Example EEPROM Connection
2
C interface. The interface is formed using software to drive these lines.
2
2.2KΩ 2.2KΩ 2.2KΩ
C interface by configuring the hardware bit serialiser with suitable firmware.
Production Information
© CSR plc 2003-2007
+1.8V
8
7
6
5
Serial EEPROM
VCC
WP
SCL
SDA
(AT24C16A)
10nF
2
C EEPROMs for use with BlueCore. This provides
U2
GND
A0
A1
A2
1
2
3
4
Device Terminal Descriptions
Page 83 of 97