Data Sheet
Table Of Contents
- 1 Design guidelines
- 2 Ordering Information
- 3 Pinout and Terminal Descriptions
- 4 Packaging
- 5 Power control
- 6 Interfaces
- 7 Block diagram
- 8 Example schematics
- 9 802.11 Radio
- 10 Firmware
- 11 Host interfaces
- 12 Electrical characteristics
- 13 RF Characteristics
- 14 Physical dimensions
- 15 Layout guidelines
- 16 Soldering recommendations
- 17 Certifications
- 18 Qualified Antenna Types for WF121-E
Silicon Labs
Page 30 of 45
12.6 Power consumption
Consumption
type
Current Unit
Supply
domain
Description
Total maximum 400 mA both Absolute peak current during packet transmission (<5µs)
CPU average 100 mA VDD_3.3V Typical average program execution consumption
CPU idle 33 mA VDD_3.3V Idle mode, instant wakeup
CPU sleep 40 µA VDD_3.3V Sleep mode, clocks off, WDT on, wakeup in milliseconds
Wi-Fi core
active
68 mA
VDD_PA
Receiving, transmitting, idle out of deep sleep, AP mode
Wi-Fi core idle 110 µA
VDD_PA
Idle, between packet transfers, automatic deep sleep
enabled (in client mode)
Wi-Fi PA 240 mA VDD_PA Peak during packet transmission
Wi-Fi LNA 12 mA VDD_PA Peak during packet reception
Wi-Fi total sleep 10 µA VDD_PA Leakage when fully powered off
Table 17: Power consumption for different operating modes