Product Specs

QCA4020 Module (WL501) Product Specification Hardware specification
■ 1x I2S
■ 1x JTAG
■ 1x ADC Sense
■ 1x USB2.0 interface
■ 1x SPI Interface
2.3 Bootstrap signals
Table 2-3 Bootstrap mode
GPIO9_BE
GPIO22_BE
Description
0
0
Force M4 to load image from flash memory (Default)
0
1
Force M4 to boot in EDL (Emergency Download Mode).
Table 2-4 JTAG mode
GPIO9_BE
GPIO25_BE
GPIO18_BE
Description
0
0
0
No JTAG enabled
0
0
1
JTAG Pins on GPIO[53:50]_BE
0
1
0
JTAG Pins on GPIO[11:8]_BE
0
1
1
JTAG Pins on GPIO[27:24]_BE
1
X
X
Not Allowed
Table 2-5 XTAL mode
GPIO23_BE
Description
0
40MHz Xtal
1
Not Allowed
Table 2-6 32.768KHz Sleep Clock Mode
GPIO21_BE
GPIO20_BE
Description
0
0
Chip Internal LPO
0
1
External Crystal 32.768KHz
1
0
External 32.768KHz TCXO Clock connected to GPIO_48_BE
1
1
Not Allowed
2.4 Electrical characteristics
2.4.1 General DC electrical characteristics
These conditions apply to all DC characteristics unless otherwise specified: T
amb
= 25 C,
VBATT BE = 3.3 V
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