User's Manual

User Manual
SM3000 OEM module
Timing
The module operates using SPI mode 0. Which means the Clock Phase is 0 and the Clock polarity is 0. The
data is output on the rising edge of SCLK. The data is read on the falling edge of SCLK.
The following timing characteristics apply to the module module:
Value Description Min. Typical. Max. Unit
T
1
RTS response time < 10 >2000
1
ms
T
2
Communication set-up
time
30 60 μs
T
3
Communication clean-
up time
100 ns
T
4
RTS reset time 0 s
T
A
CMD to SIZE time 8 10 μs
T
B
SIZE set-up time 0.5 2 μs
T
C
SIZE to DATA time 80 120 μs
T
D
DATA time SIZE*8 μs
1 If the module is communicating with the network or running the location engine the response time depends on the delay induced
by these operations. For the location engine the delay is a direct result of its configuration
13/27 Ambient Systems B.V.