User Manual
Table Of Contents
- Introduction
- Features
- Table of Contents
- 1. Ordering Information and Module Marking
- 2. Block Diagram
- 3. Pinout and Package Information
- 4. Electrical Characteristics
- 5. Power Management
- 6. Clocking
- 7. CPU and Memory Subsystem
- 8. WLAN Subsystem
- 9. Bluetooth Low Energy 4.0
- 10. External Interfaces
- 11. Application Reference Design
- 12. Module Outline Drawings
- 13. Design Consideration
- 14. Reflow Profile Information
- 15. Module Assembly Considerations
- 16. Regulatory Approval
- 17. Reference Documentation
- 18. Document Revision History
- The Microchip Web Site
- Customer Change Notification Service
- Customer Support
- Product Identification System
- Microchip Devices Code Protection Feature
- Legal Notice
- Trademarks
- Quality Management System Certified by DNV
- Worldwide Sales and Service
5. Power Management
5.1 Device States
The ATWINC3400-MR210CA module has multiple device states, based on the state of the IEEE 802.11
and Bluetooth subsystems. It is possible for both subsystems to be active at the same time. To simplify
the device power consumption breakdown, the following basic states are defined. One subsystem can be
active at a time:
• WiFi_ON_Transmit – Device actively transmits IEEE 802.11 signal
• WiFi_ON_Receive – Device actively receives IEEE 802.11 signal
• BT_ON_Transmit – Device actively transmits Bluetooth signal
• BT_ON_Receive – Device actively receives Bluetooth signal
• Doze – Device is powered on but it does not actively transmit or receive data
• Power_Down – Device core supply is powered off
5.2 Controlling Device States
The following table shows different device states and its power consumption. The device states can be
switched using the following:
• CHIP_EN – Module pin (pin 19) enables or disables the DC/DC converter
• VDDIO – I/O supply voltage from external supply
In the ON states, VDDIO is ON and CHIP_EN is high (at VDDIO voltage level). To change from the ON
states to Power_Down state, connect the RESETN and CHIP_EN pin to logic low (GND) by following the
power-down sequence mentioned in Figure 5-1. When VDDIO is OFF and CHIP_EN is low, the chip is
powered off with no leakage.
Table 5-1. ATWINC3400-MR210CA Device States Current Consumption
Device State Code Rate
Output Power
(dBm)
Current Consumption
(1)
I
VBAT
I
VDDIO
ON_WiFi_Transmit 802.11b 1 Mbps 16.7 271 mA 24 mA
802.11b 11 Mbps 17.5 265 mA 24 mA
802.11g 6 Mbps 18.3 275 mA 24 mA
802.11g 54 Mbps 13.0 235 mA 24 mA
802.11n MCS 0 17.5 272 mA 24 mA
802.11n MCS 7 12.5 232 mA 24 mA
ON_WiFi_Receive 802.11b 1 Mbps N/A 63.9 mA 23.7 mA
802.11b 11 Mbps N/A 63.9 mA 23.7 mA
802.11g 6 Mbps N/A 63.9 mA 23.7 mA
802.11g 54 Mbps N/A 63.9 mA 23.7 mA
802.11n MCS 0 N/A 63.9 mA 23.7 mA
ATWINC3400-MR210CA
© 2017 Microchip Technology Inc.
Draft Datasheet Preliminary
DS00000000A-page 21