XCite™ OEM RF Module – Product Manual v1.1
Electrical Characteristics
Timing Specifications
The diagram below shows 9XCite Modules providing an RF Link between hosts.
Figure 4.
System Block Diagram – RF Link between hosts
The RF data flow sequence is initiated when the first byte of data is received by the transmitting
XCite Module. As long as XCite Module A is not already receiving RF data, the serial data goes
into the DI Buffer, is packetized, and then transmitted to XCite Module B.
Figure 5.
Timing Specifications (“A” and “B” are associated with Figure 4)
Table 3.
DC Characteristics (Vcc = 2.85 to 5.50V)
Symbol
Parameter
Condition
Min
Typical
Max
Units
V
IL
Input Low Voltage
All input signals
-0.5
0.3 * Vcc
V
V
IH
Input High Voltage
All except
pin
0.6 * Vcc
Vcc + 0.5
V
V
IH2
Input High Voltage
pin *
0.9 * Vcc
Vcc + 0.5
V
V
OL
Output Low Voltage
I
OL
= 20 mA,
Vcc = 5V
0.7
0.5
V
V
OH
Output High Voltage
I
OH
= -20 mA,
Vcc = 5V
4.0
2.0
V
I
IL
Input Leakage
Current I/O Pin
Vcc = 5.5V, pin low
(absolute value)
3
µA
I
IH
Input Leakage
Current I/O Pin
Vcc = 5.5V, pin high
(absolute value)
3
µA
I
IL2
, DO,
(Vcc – VI) / 10 **
mA
I
IL3
(Vcc – VI) / 47 **
mA
I
IH2
(Vcc – VI) / 10 **
mA
* Reset pulse must last at least 250 nanoseconds
** V
I
= the input voltage on the pin
© 2004 MaxStream, Inc., Confidential and Proprietary
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