Digi Digi Conntect ME, Справочник по аппаратуре

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4 3
M o d u l e S p e c i f i c a t i o n s
DC Characteristics
The following tables provide DC characteristics for operating conditions, inputs, and
outputs.
Warning
The rise time of your 3.3V power supply needs to be faster than 140ms.
That is it needs to be less than 140ms. If the rise time is more than 140ms,
it could lead to the 3-1-3 diagnostic error.
Operating Conditions
Symbol Description Min Typ Max Unit
V
CC
Supply Voltage 3.14 3.3 3.45 V
I
CC
Supply Current — —
Digi
Connec
t
EM
27
0
mA
Digi
Connec
t
Wi-EM
40
0
I
IL
Input Current as “0”
(57K pull-up resistor) —
— 57
µ
A
I
IH
Input Current “1”
(57K pull-up resistor)
-10 — 10
µ
A
I
OZ
HighZ Leakage
Current
-10 — 10
µ
A
I
OD
Output Drive Strength — — 2 mA
C
IO
Pin Capacitance
(V
O
=0)
— — 4 pF
Inputs
Symbol Description Min Typ Max Unit
V
IH
Input High Voltage 2 — V
CC
+0.3 V
V
IL
Input Low Voltage V
SS
-0.3 — 0.2*V
CC
V
DC_ME-HWR.book Page 43 Thursday, July 1, 2004 11:12 AM