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BTM420/421
®
Bluetooth
Data Module
Voltage Specifications
Table 5: Logic Levels (VUSB)
Logic Levels (VUSB)
INPUT VOLTAGE LEVELS
V
ih
V
2.7 <VDD_USB<3.0
il
1.7<VDD_USB<1.9
Output Voltage Levels (1.7 <VDD_USB_1.9)
V
(lout = -4mA)
oh
V
(lout = 4mA)
ol
Output Voltage Levels (2.7<VDD_USB<3.0)
V
(lout = -4mA)
oh
V
(lout = 4mA)
ol
Note: VDD_USB must be connected to power the USB and UART interfaces.
Table 6: Logic Levels (VIO)
Logic Levels (VIO)
INPUT VOLTAGE LEVELS
V
ih
V
2.7 <VDD_IO<3.0
il
1.7<VDD_IO<1.9
Output Voltage Levels (1.7 < VDD_IO < 1.9)
V
(lout = -4mA)
oh
V
(lout = 4mA)
ol
Output Voltage Levels (2.7 < VDd_IO < 3.0)
V
(lout = -4mA)
oh
V
(lout = 4mA)
ol
Embedded Wireless Solutions Support Center:
http://ews-support.lairdtech.com
www.lairdtech.com/bluetooth
MIN
TYP
0.7VDD_USB
-0.4
-0.4
VDD_USB – 0.4
VDD_USB – 2.0
MIN
TYP
0.7VDD_IO
-0.4
-0.4
VDD_IO – 0.4
VDD_IO – 0.2
9
MAX
+0.8
+0.4
0.2
MAX
+0.8
+0.4
0.4
0.2
Laird
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Hong Kong: +852 2923 0610
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