NRF902 Datasheet, PDF (5/13 Pages) List of Unclassifed Manufacturers – Single chip 868 MHz Transmitter

PRELIMINARY PRODUCT SPECIFICATION
nRF902 Single chip 868 MHz Transmitter
IMPORTANT TIMING DATA
Timing information
The timing information for the different operations is summarised in Table 4.
(TX is Transmit mode, Clk is Clock mode, Pwr_Dn is Power Down Mode.)
Change of Mode
Pwr_Dn è TX
Clk è TX
Max Delay
2ms
30us
Table 4 Switching times for nRF902
Switching between Power Down Mode and Transmit-mode.
The maximum time from Power Down mode until the synthesised frequency is stable
and data can be transmitted is seen in Figure 4.
VDD
xtal
FSK
2ms
ms
0
2
4
Figure 4. Timing diagram when going from Power Down mode to Transmit-mode
Switching between Clock Mode and Transmit-mode.
The maximum time from Clock mode until the synthesised frequency is stable and
data can be transmitted is seen in Figure 5.
VDD
REXT
FSK
30us
us
0
30
Figure 5. Timing diagram when going from Clock mode to Transmit-mode
Nordic VLSI ASA
Revision: 1.0
- Vestre Rosten 81, N-7075 Tiller, Norway - Phone [phone] - Fax [phone]
Page 5 of 13
April 2000