參數(shù)資料
型號(hào)： SCC2681T
廠(chǎng)商： NXP Semiconductors N.V.
英文描述： Dual asynchronous receiver/transmitter (DUART)
中文描述： 雙異步接收器/發(fā)送器（杜阿爾特）
文件頁(yè)數(shù)： 7/15頁(yè)
文件大?。?/td> 108K
代理商： SCC2681T
Philips Semiconductors
Product data
SCC2681T
Dual asynchronous receiver/transmitter (DUART)
2004 Apr 06
7
DC ELECTRICAL CHARACTERISTICS
1, 2, 3
T
amb
= 0
°
C to +70
°
C; V
CC
= +5.0 V
±
10%
SYMBOL
PARAMETER
TEST CONDITIONS
LIMITS
Typ
UNIT
Min
–
2.0
2.5
Max
0.8
–
–
–
V
IL
V
IH
V
IH
V
IH
V
OL
V
OH
I
IX1
I
ILX1
I
IHX1
I
OHX2
I
OHX2S
I
OLX2
I
OLX2S
LOW-level input voltage
HIGH-level input voltage (except X1/CLK)
HIGH-level input voltage (except X1/CLK)
HIGH-level input voltage (X1/CLK)
–
–
–
–
V
V
V
V
T
amb
≥
0
°
C
T
amb
< 0
°
C
0.8 V
CC
–
V
CC
– 0.5
–10
–75
0
0
–10
–75
1
LOW-level output voltage
HIGH-level output voltage (except open-drain outputs)
4
I
OL
= 2.4 mA
I
OH
= –400
μ
A
V
IN
= 0 V to V
CC
V
IN
= 0 V
V
IN
= V
CC
V
OUT
= V
CC
; X1 = 0
V
OUT
= 0 V; X1 = 0
V
OUT
= 0 V; X1 = V
CC
V
OUT
= V
CC
; X1 = V
CC
–
–
0.4
–
V
V
X1/CLK input current
X1/CLK input LOW current – operating
X1/CLK input HIGH current – operating
X2 output HIGH current – operating
X2 output HIGH short circuit current – operating
X2 output LOW current – operating
X2 output LOW short circuit current – operating
Input leakage current:
All except input port pins
Input port pins
Output off current HIGH, 3-state data bus
Output off current LOW, 3-state data bus
Open-drain output LOW current in off-state
Open-drain output HIGH current in off-state
Power supply current
5
Operating mode
–
–
–
–
–
–
–
+10
0
75
+75
–1
0
10
μ
A
μ
A
μ
A
μ
A
mA
μ
A
mA
I
I
V
IN
= 0 V to V
CC
V
IN
= 0 V to V
CC
V
IN
= V
CC
V
IN
= 0 V
V
IN
= 0 V
V
IN
= V
CC
–10
–20
–
–10
–10
–
–
–
–
–
–
–
+10
+10
10
–
–
10
μ
A
μ
A
μ
A
μ
A
μ
A
μ
A
I
OZH
I
OZL
I
ODL
I
ODH
I
CC
CMOS input levels
–
–
10
mA
NOTES:
1. Parameters are valid over specified temperature range.
2. All voltage measurements are referenced to ground (GND). For testing, all inputs swing between 0.4 V and 2.4 V with a transition time of
5 ns maximum. For X1/CLK this swing is between 0.4 V and 4.4 V. All time measurements are referenced at input voltages of 0.8 V and
2.0 V and output voltages of 0.8 V and 2.0 V, as appropriate.
3. Typical values are at +25
°
C, typical supply voltages, and typical processing parameters.
4. Test conditions for outputs: C
L
= 150 pF, except interrupt outputs. Test conditions for interrupt outputs: C
L
= 50 pF, R
L
= 2.7 k
to V
CC
.
5. All outputs are disconnected. Inputs are switching between CMOS levels of V
CC
– 0.2 V and V
SS
+ 0.2 V.
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