User's Manual

SDC-WB40NBT User’s Guide
11
SDC-WB40NBT_UsersGuide
© 2011 – 2012 Summit Data Communications, Inc. All rights reserved.
Parameter
Comments
Conditions
Min.
Typ.
Max.
Unit
Reset Delay
Power on or
under voltage
0.9
1.1
1.4
s
External Reset
Pulse Width
RSTN driven
low by external
circuitry
92
-
-
µs
Output Current
High Level RSTN
Internal reset
controller
drives external
circuitry
U
H
= 2.0 V
-
-
650
µA
Input Current Low
Level RSTN
Manual reset
from external
circuitry
Internal reset controller drives
high level
2.2
-
-
mA
I/O Pin Characteristics (including UART interfaces)
Parameter
Comments
Conditions
Min.
Typ.
Max.
Unit
Input Low Level
Voltage
-
-
0.8
V
Input High Level
Voltage
2.0
-
-
V
Output Low Level
Voltage
I
OL
= 8 mA
-
-
0.4
V
I
OL
= 0 mA
-
-
0.2
Output High Level
Voltage
I
OL
= 8 mA
VCC –
0.4
-
-
V
I
OL
= 0 mA
VCC –
0.2
-
-
V
Output High Level
Voltage LED0
I
OL
= 6 mA
VCC –
0.4
-
-
V
Input Leakage
Current
Pull-up-disabled
-
-
1
µA
Input Pull-Up
Current
Vin = 0 V
VCC = 3.0 V
8
-
-
µA
VCC = 3.45 V
-
-
30
Internal Pull-Up
Value
-
200
-
kOhm
USB Transceiver Characteristics
Parameter
Comments
Conditions
Min.
Typ.
Max.
Unit
Input Low Level
Voltage
-
-
0.8
V
Input High Level
Voltage
2.0
-
-
V