RF63W datasheet(72/91 Pages) HOPE

72 / 91 page

ADVANCED COMMUNICATIONS & SENSING

Page 72 of 91

RF63

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Undefined

Wait for

10 ms

Chip is ready from

this point on

5 ms

this point on

High-Z

7.4. Reset of the Chip

A power-on reset of the RF63 is triggered at power up. Additionally, a manual reset can be issued by controlling

pin 13.

7.4.1. POR

If the application requires the disconnection of VDD from the RF63, despite of the extremely low Sleep Mode

current, the user should wait for 10 ms from of the end of the POR cycle before commencing communications over

the SPI bus. Pin 13 (TEST8) should be left floating during the POR sequence.

VDD

Pin 13

(output)

Figure 54: POR Timing Diagram

Please note that any CLKOUT activity can also be used to detect that the chip is ready.

7.4.2. Manual Reset

A manual reset of the RF63 is possible even for applications in which VDD cannot be physically disconnected.

Pin 13 should be pulled high for a hundred microseconds, and then released. The user should then wait for 5 ms

before using the chip.

VDD

Pin 13

High-Z

> 100 us

‟‟1‟‟

Wait for

Chip is ready from

(input)

Figure 55: Manual Reset Timing Diagram

Please note that while pin 13 is driven high, an over current consumption of up to ten milliamps can be seen on

VDD.

RF63W Datasheet(PDF) 72 Page - HOPE Microelectronics CO., Ltd.