User's Manual

Stollmann
E + V GmbH
BlueMod+B20
Hardware reference
Author: bg Date of Saving: 28.03.07 Ref: BlueMod+B20_HWreference_V101.doc Revision: 1.00 Page 13 of 13
3.5 I
2
C Interface
PIO[8:6] can be used to form a master I
2
C interface. The interface is formed using
software to drive these lines. Therefore, it is suited only to relatively slow functions
i.e. EEPROM.
2.2k 2.2k 2.2k
VCC
WP
SCL
SDA
A0
A1
A2
GND
10nF
+1.8V
PIO[8]
PIO[6]
PIO[7]
Example EEPROM connection
BluMod+B20 interfaces directly to EEPROM devices including the following:
• Atmel AT24Cxxx
• Catalyst CAT24WCxxx
• Fairchild FM24Cxxx
• Microchip 24AAxxx
• Philips PCF8582C-2, PCF8594C-2, PCF8598C-2
• Seiko 24Cxx, 24CSxx
• Rohm BR24Cxx
• ST M24C32, M24C64, M24128-B, M24256-B,M24512
3.6 Bluetooth radio Interface
The BlueMod+B20 presents an integrated ceramic antenna.
It is highly recommended that you follow the design rule given in the Stollmann Ap-
plication Note on Antenna design [2].