參數(shù)資料
型號: NT6880H
廠商: Electronic Theatre Controls, Inc.
英文描述: Keyboard Controller
中文描述: 鍵盤控制器
文件頁數(shù): 8/13頁
文件大?。?/td> 289K
代理商: NT6880H
NT6880
8
Absolute Maximum Ratings
*
DC Supply Voltage . . . . . . . . . . . . . . . -0.3V to +7.0V
Input/Output Voltage . . . . . . GND -0.2V to V
DD
+ 0.2V
Operating Ambient Temperature . . . . . . . . 0
°
C to +70
°
C
Storage Temperature . . . . . . . . . . . . . -55
°
C to +125
°
C
Operating Voltage (V
DD
) . . . . . . . . . . . . . +4.5V to 5.5V
*Comments
Stresses above those listed under "Absolute Maximum
Ratings" may cause permanent damage to this device.
These are stress ratings only. Functional operation of
this device at these or any other conditions above those
indicated in the operational sections of this specification
is not implied or intended. Exposure to the absolute
maximum rating conditions for extended periods may
affect device reliability.
DC Electrical Characteristics
(V
DD
= 5V, GND = 0V, T
A
= 25
°
C, F
OSC
= 4MHz, unless otherwise specified)
Symbol
Parameter
Min.
Typ.
Max.
Unit
Conditions
I
CC
Power Supply Current
20
mA
No load
V
IH
Input High Voltage
2
V
V
IL
Input Low Voltage
0.8
V
V
OH1
Output High Voltage (PORT 0, 1, 2,
3)
2.4
V
I
OH1
= -100
μ
A
V
OH2
Output High Voltage (CLK, DATA)
2.4
V
I
OH2
= -400
μ
A, Note 1
V
OH3
Output High Voltage (CLK, DATA)
2.4
V
I
OH3
= -800
μ
A, Note 2
V
OL1
Output Low Voltage (PORT 0, 1, 2)
0.4
V
I
OL1
= 4mA
V
OL2
Output Low Voltage (PORT 3)
0.4
V
I
OL2
= 5mA
V
OL3
Output Low Voltage (CLK, DATA)
0.4
V
I
OL3
= 10mA
F/F
Initial Frequency Variation 1
+/-10
%
For RC OSC option
only; by Lots
F/F
Frequency Variation 2
+/-1
%
For ceramic resonator
option only; by Lots
I
LED
LED Sink Current (LED 0, 1, 2)
10
14
17
mA
V
OL
= 3.2V
V
LVR
Low Voltage Reset Threshold
3.0
V
T
POR
Power-on Reset Time
120
150
180
ms
T
RSTB
RESET
Input Low Pulse Width
2.5
μ
s
10 system clocks
R
PH
RESET
Pull High Resistor
220
K
Note 1: There are 2 types for DATA/CLK driving capability. The specification of V
OH2
is the same as NT6868A. Under this
condition, user can select mask option 1 or 3 for this specification.
Note 2: The driving capability of DATA/CLK is higher than V
OH2
. Under this condition, a user can select mask option 5 or 7
for this specification.
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