SLOA247C July 2017 – March 2019 RF430FRL152H , RF430FRL153H , RF430FRL154H
Figure 1 and Table 2 show the external components that are needed for the RF430FRL152H to operate.
Figure 1. RF430FRL15xH Application Circuit | Name | Value | Description | Comment |
|---|---|---|---|
| C4 | 10 nF | Charge pump capacitor | Needed for proper device operation |
| C5 | 100 nF | Decoupling cap at VDD2X | Needed for proper device operation |
| C7 | 1 µF | Bypass capacitor between SVSS and VSS | For proper ADC operation |
| C6 | 10 nF | Decoupling cap at RST | To prevent noise and unintentional resets |
| C2 | 2.2 µF | Decoupling cap at VDDSW | Power supply decoupling |
| C8 | 100 nF | Decoupling cap at VDD | Digital logic decoupling |
| C9 | 100 nF | Decoupling cap at VDDH | Power supply decoupling |
| C3 | 100 nF | Decoupling cap at VDDB (if a battery is being used) | To reduce ESR on a battery |
When using the ROM library, as with the "Default" and "SensorHub" examples, some external resistors may be necessary. See Table 3 for specifics. If using the "NFC" example, this section does not apply.
| Pin | Value | Description | Comment |
|---|---|---|---|
| 19 (P1.7) | 10 kΩ to 100 kΩ |
Pullup: External host controller Pulldown: Digital sensor used |
If neither host controller nor digital sensor is used, then use a pullup. Also this pin can be reused for JTAG. |
| 20 (P1.6) | 10 kΩ to 100 kΩ |
I2C address set bit 1 of I2C address SPI mode: sets the SPI Mode (1-4) |
Necessary only if host controller mode is being used. Is a don't care when digital sensor mode is used. Also this pin can be reused for JTAG. |
| 21 (P1.5) | 10 kΩ to 100 kΩ |
I2C mode: set bit 0 of I2C address SPI mode: sets the SPI Mode (1-4) |
Necessary only if host controller mode is being used. Is a don't care when digital sensor mode is used. Also this pin can be reused for JTAG. |
| 8 (P1.3) | Tie to GND or float |
Tie low to enable I2C slave functionality for host controller. High or floating on start-up enables SPI functionality for host controller. |
Necessary only if host controller mode is being used. Is a don't care when digital sensor mode is used. |
For more information, see the section on interfacing a host controller in the RF430FRL15xH firmware user's guide.