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Data Sheet

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RFD77402 DATASHEET v1.8
© 2017 RF Digital Corporation 7.24.2017
www.simblee.com
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Simblee™ RFD77402
2.2 Host Interface Power Management
The module enters standby mode once power is applied. To wake up the module to a fully on state (MCPU
responding) the user must set to ‘1’ bit 9 (“MCPU_Init_State”) of the register PMU Configuration Register at
address 0x14 and then issue a command that will then cause the MCPU to wake up. A command issued to the
module with “MCPU_Init_State” not set to ‘1’ will cause the module to exit the Standby state and go in MCPU OFF
state. In this state power is applied to the rest of the module but the MCPU is off.
Figure 13: Module State Diagram