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NRF403-IC Datasheet(PDF) 5 Page - List of Unclassifed Manufacturers |
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NRF403-IC Datasheet(HTML) 5 Page - List of Unclassifed Manufacturers |
5 / 15 page PRODUCT SPECIFICATION nRF403 Single Chip RF Transceiver Nordic VLSI ASA - Vestre Rosten 81, N-7075 Tiller, Norway - Phone +4772898900 - Fax +4772898989 Revision: 1.1 Page 5 of 18 July 2001 IMPORTANT TIMING DATA Timing information The timing information for the different operations is summarised in Table 5. (TX is transmit mode, RX is receive mode and Std.by is Standby mode.) Change of Mode Name Max Delay Condition TX è RX tTR 3ms RX è TX tRT 1ms Std.by è TX tST 2ms Std.by è RX tSR 3ms Operational mode VDD=0 è TX tVT 4ms VDD =0 è RX tVR 5ms Start-up Table 5 Switching times for nRF403. Switching TX ↔ ↔ RX (operational mode). When switching from RX-mode to TX-mode data (DIN) may not be sent before the TXEN-input has been high for at least 1ms, see Figure 4(a). When switching from TX-mode to RX-mode the receiver may not receive data (DOUT) before the TXEN-input has been low for at least 3ms, see Figure 4(b). PWR_UP VDD TXEN DIN 0 2 4 ms 1ms RX to TX PWR_UP VDD TXEN DOUT 0 2 4 ms 3ms TX to RX (a) (b) Figure 4. Timing diagram for nRF403for switching from RX to TX (a) and TX to RX (b). Switching between standby and RX-mode (operational mode). The time from the PWR_UP input is set to “1”, until the data (DOUT) is valid is tSR,, see Table 5. Worst case tSR is 3ms for nRF403 as can be seen in Figure 5 (a). Switching between standby and TX-mode (operational mode). The time from the PWR_UP input is set to “1”, until the synthesised frequency is stable is tST, see Table 5. |
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