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
Table 3-1. ATWINC3400-MR210CA Module Pin Description
Pin # Pin Name Pin Type Description
1 GND GND Ground pin.
2 SPI_CFG Digital Input Serial Peripheral Interface pin, which must be
died to VDDIO.
3 NC - No connection.
4 NC - No connection.
5 NC - No connection.
6 NC - No connection.
7 RESETN Digital Input • Active-low hard Reset pin.
• When the Reset pin is asserted low, the
module is in the Reset state. When the
Reset pin is asserted high, the module
functions normally.
• This pin must connect to a host output
that is low by default on power-up. If the
host output is tri-stated, add a 1 MOhm
pull down resistor to ensure a low level at
power-up.
8 BT_TXD Digital I/O,
Programmable pull up
Bluetooth UART transmit data output pin.
9 BT_RXD Digital I/O,
Programmable pull up
Bluetooth UART receive data input pin.
10 I2C_SDA_S Digital I/O,
Programmable pull up
• I2C Slave data pin.
• Used only for debug development
purposes. It is recommended to add a
test point for this pin.
• I2C is the default configuration. <TBD>
11 I2C_SCL_S Digital I/O,
Programmable pull up
• I2C Slave clock pin.
• Used only for debug development
purposes. It is recommended to add a
test point for this pin.
• I2C is the default configuration. <TBD>
12 VDDIO Power Digital I/O power supply.
13 GND GND Ground pin.
14 GPIO3 Digital I/O,
Programmable pull up
General Purpose Input/Output pin.
15 GPIO4 Digital I/O,
Programmable pull up
General Purpose Input/Output pin.
ATWINC3400-MR210CA
© 2017 Microchip Technology Inc.
Draft Datasheet Preliminary
DS00000000A-page 8