Data Sheet

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BDE Technology Inc.
BDE-WF3235
BDE Dual-Band WiFi MCU Module
Datasheet
Datasheet
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4.6 BLE and WLAN Coexistence Requirements
For proper BLE and WLAN 2.4 GHz radio coexistence, the following requirements must be met:
Table 4-5. BLE/WLAN Coex Isolation Requirement
PARAMETER
Band
MIN TYP MAX
UNIT
Port-to-port isolation
Dual antenna configuration
(1)
20
(2)
dB
(1) A single antenna configuration is possible using the CC3x35 devices.
(2) For dual antenna configuration, the antenna placement must be such that isolation between the BLE and WLAN ports is at least 20 dB.
4.7 Reset Requirement
PARAMETER
MIN
TYP MAX
UNIT
V
IH
Operation mode level
0.65 × V
BAT
V
V
IL
Shutdown mode level
(1)
0
0.6
V
Minimum time for nReset low for resetting the module
5
ms
T
r
and T
f
Rise and fall times
20
µs
(1) The nRESET pin must be held below 0.6 V for the module to register a reset.
4.8Timing and Switching Characteristics
4.8.1 Power-Up Sequencing
For proper start-up of the BDE-WF3235 module, perform the recommended power-up sequencing as follows:
1. Tie V
BAT1
(pin 37) and V
BAT2
(pin 40) together on the board.
2. Hold the nRESET pin low while the supplies are ramping up.
Figure 4-3 shows the reset timing diagram for the first-time power-up and reset removal.
Figure 4-3. First-Time Power-Up and Reset Removal Timing Diagram