RL78/G1H
CHAPTER 18 RF TRANSCEIVER
Page 657 of 920
18.6.4
Mode transition
(1) Wake Up (transition from SLEEP to IDLE) operation
Wake Up operation means the startup sequence operation (transition) of RF unit.
Figure 18 - 106 shows the Wake Up operation (RF unit startup sequence) for the XTAL_RF oscillator. While
the power is applied externally, set to the high level of STANDBY pin
→
OSCDRVSEL internal pin
→
DON
internal pin
→
RFRESETB internal pin in this order.
Figure 18 - 107 shows the Wake Up operation (RF unit startup sequence) for the REFCLKIN_RF external
clock (TCXO, etc) input. The high level is fixed in the OSCDRVSEL internal pin. Set to the high level in the
STANDBY pin and the DON internal pin sequentially. There is no restriction of the interval between setting
STANDBY pin to the high level and setting DON internal pin to the high level especially (0
μ
s or higher must
be kept). For each state of <1> <2> and <3> shown in Figure 18 - 106 and Figure 18 - 107, set to secure the
described time or longer. The descriptions of each state are listed in Table 18 - 12.
Содержание RL78/G1H
Страница 941: ...R01UH0575EJ0120 RL78 G1H...