BeagleBoard XM C2, Reference Manual

Page: 143 / 163

REF: BB_SRM_xM
BeagleBoard-xM System
Reference Manual
Revision C2
Page 143 of 163
A1
A0
A2
U8
AT24C01
A0
1
A1
2
A2
3
VSS
4
SDA
5
SCL
6
WP
7
VCC
8
R
21
4.
7K,
5%,
0402
2
1
R
20
4.
7K,
5%,
0402
2
1
C28
0.1uf ,CER,0402
R
19
4.
7K,
5%,
0402
2
1
VIO_1V8
BB_I2C_SDA
BB_I2C_SCL
BB_WP
TP7
TP
VIO_1V8
Figure 83. BeagleBoard Expansion Board EEPROM Schematic
The EEPROM must be write protected. It is suggested that a testpoint be used to allow
for the WP to be disabled during test to allow the required data to be written to the
EEPROM. The EEPROM is to be connected to I2C2 as found on the main expansion
connector.
The EEPROM that is designated is the AT24C01 or ATC24C01B. The AT24C01 is
designated as “Not Recommended for New Design” but can still be used. The
AT24C01B is the replacement part and is available in several different packages, all of
which can be used.
o
TSSOP 8
o
PDIP 8
o
UDFN 8
o
SOIC 8
o
SOT23 5
o
dBGA2 8
The contents of the EEPROM are not specified in this document.