SLASFO8 July 2025 AFE53004W
PRODUCTION DATA
Refer to the PDF data sheet for device specific package drawings
The AFEx3004W family of devices includes a power-on reset (POR) function that controls the output voltage at power up. After the VDD supply has been established, a POR event is issued. The POR causes all registers to initialize to default values, and communication with the device is valid only after a POR (boot-up) delay. The default value for all the registers in the AFEx3004W is loaded from NVM as soon as the POR event is issued.
When the device powers up, a POR circuit sets the device to the default mode. The POR circuit requires specific VDD levels (as indicated in Figure 6-18) to discharge the internal capacitors and reset the device at power up. To initiate a POR, ensure that VDD is less than 0.7V for at least 1ms. When VDD drops to less than 1.65V, but remains greater than 0.7V (shown as the undefined region), the device does not always reset under all specified temperature and power-supply conditions. In this case, initiate a POR. When VDD remains greater than 1.65V, a POR does not occur.
Figure 6-18 Threshold Levels for VDD
POR Circuit