Data Sheet
Table Of Contents
- General Description
- Key Features
- Applications
- Device Family
- Contents
- 1. References
- 2. Block Diagram
- 3. Terminal Configuration and Functions
- 4. Specifications
- 5. Detailed Description
- 6. Applications, Implementation, and Layout
- 7. Mechanical Specifications
- 8. Ordering Information
- 9. Revision History
- 10. Regulatory
info@bdecomm.com
BDE Technology Inc.
BDE-WF3235
BDE Dual-Band WiFi MCU Module
Datasheet
12 / 77
Note
If an external device drives a positive voltage to the signal pads and the BDE-WF3235 module is not powered, DC is drawn from the other device. If the
drive strength of the external device is adequate, an unintentional wakeup and boot of the BDE-WF3235 module can occur. To prevent current draw, we
recommend any one of the following conditions:
• All devices interfaced to the BDE-WF3235 module must be powered from the same power rail as the chip.
• Use level shifters between the device and any external devices fed from other independent rails.
• The nRESET pin of the BDE-WF3235 module must be held low until the VBAT supply to the module is driven and stable.
• All GPIO pins default to high impedance unless programmed by the MCU. The bootloader sets the TDI, TDO, TCK, TMS, and Flash_SPI pins to
mode 1. All the other pins are left in the Hi-Z state.
The ADC inputs are tolerant up to 1.8 V (see Table 4-17 for more details about the usable range of the ADC). On the other hand, the digital pads can
tolerate up to 3.6 V. Hence, take care to prevent accidental damage to the ADC inputs. We recommend first disabling the output buffers of the digital I/Os
corresponding to the desired ADC channel (that is, converted to Hi-Z state), and thereafter disabling the respective pass switches (S7 [Pin 47], S8 [Pin
48], S9 [Pin 49], and S10 [Pin 50]). For more information, see Table 3-4.
Table 3-2. Pin Attributes and Pin Multiplexing
GENERAL PIN ATTRIBUTES
FUNCTION
PAD STATES
Pkg. Pin
Pin Alias
Use
Select as
Wakeup
Source
Config.
Addl.
Analog
Mux
Muxed
With
JTAG
Dig. Pin Mux
Config. Reg.
Dig. Pin
Mux
Config.
Mode
Value
Signal Name
Signal Description
Signal
Direction
LPDS
Hib
nRESET = 0
1
GND
GND
N/A
N/A
N/A
N/A
N/A
GND
GND
N/A
N/A
N/A
N/A
2
GND
GND
N/A
N/A
N/A
N/A
N/A
GND
GND
N/A
N/A
N/A
N/A
3
GPIO10
I/O
No
No
No
GPIO_PAD_
CONFIG_10
(0x4402 E0C8)
0
GPIO10
GPIO
I/O
Hi-Z, Pull,
Drive
Hi-Z,
Pull,
Drive
Hi-Z
1
I2C_SCL
I2C clock
I/O (open
drain)
Hi-Z, Pull,
Drive
3
GT_PWM06
Pulse-width modulated
O/P
O
Hi-Z, Pull,
Drive
7
UART1_TX
UART TX data
O
1
6
SDCARD_CLK
SD card clock
O
0
12
GT_CCP01
Timer capture port
I
Hi-Z, Pull,
Drive