Wismo_ready indication, Features, Pin description – Sierra Wireless AIRPRIME WISMO218 User Manual
Page 67: Table 27, Electrical characteristics of the signal, Table 28, Wismo_ready indication pin descriptions
WA_DEV_W218_PTS_002
Rev 006
April 29, 2010
67
Product Technical Specification &
Customer Design Guidelines
Interfaces
3.14. WISMO_READY Indication
This signal indicates the ready status of the AirPrime WISMO218 after powering on. Please note that
there is an initial positive pulse of less than 200ms during power ON. For details, please refer to
Figure 31 Power-ON Sequence (no PIN code activated). Once the AirPrime WISMO218 is properly
powered ON, the WISMO_READY pin will set to HIGH level to acknowledge the successful powering
ON of the AirPrime WISMO218 before it is ready to operate.
On the other hand, the level will go LOW before powering off.
3.14.1. Features
Table 27: Electrical Characteristics of the Signal
Parameter
I/O Type
Minimum
Typ.
Maximum
Unit
V
OH
2V8
2.7
2.8
2.95
V
V
OL
2V8
-
-
0.4
V
3.14.2. Pin Description
Table 28: WISMO_READY Indication Pin Descriptions
Signal
Pin Number
I/O
I/O Type
Description
WISMO_READY
7
O
2V8
AirPrime WISMO218 ready
indication