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 21 of 21
5.4 Digital I/O
VSUP = 3.3V, T
amb
= 25°C
Symbol Item Condition Limit Unit
Min Max
V
IL
Low-Level Input
Voltage
- 0.8 V
V
IH
High-Level Input
Voltage
0.7xVSUP - V
V
OL
Low-Level Output
Voltage
I
OL
= 4mA - 0.2 V
V
OH
High-Level Output
Voltage
I
OH
= -4mA VSUP-0.2 - V
I
OL
Low -Level Output
Current
V
OL
= 0.55V - 4 mA
I
OH
High-Level Output
Current
V
OH
= 2.3V /100k PU
V
OH
= 2.3V /10k PU
- -4 mA
5.5 AIO-Interface
VSUP = 3.3V, T
amb
= 25°C
Item Limit Unit
Min Typ Max
Resolution - - 8 Bits
Input voltage range 0 1.7 V
Accuracy -1 1 LSB
Offset -1 1 LSB
Gain error -0.8 0.8 %
Input bandwidth 100 kHz
Conversion time - 2.5 - µs
Sample rate 700 Samples/s
5.6 USB-Interface
VSUP = 3.3V, T
amb
= 25°C
Item Unit
Min Max
Input logic level low - 0.3xVSUP V
Input logic level high 0.7xVSUP - V
Output logic level low )* 0 0.2 V
Output logic level high )* 2.8 VSUP V
)* connected to correctly terminated USB cable