參數(shù)資料
型號(hào): MC14489P
廠商: MOTOROLA INC
元件分類(lèi): 顯示驅(qū)動(dòng)器
英文描述: Digital Signal Processor 181-CPGA -55 to 125
中文描述: LED DISPLAY DRIVER, PDIP20
封裝: PLASTIC, DIP-20
文件頁(yè)數(shù): 9/20頁(yè)
文件大小: 303K
代理商: MC14489P
MC14489
MOTOROLA
9
Table 1. Triple–Mode Segment Decoder Function Table
Lamp Conditions
Bank Nibble Value
7–Segment Display
Characters
No Decode
(Invoked via
Bits C1 to C7)
Hexadecimal
Binary
MSB
LSB
Hex Decode
(Invoked via
Bits C1 to C5)
Special
Decode
(Invoked via
Bits C1 to C7)
d
c
b
a
$0
$1
$2
$3
L
L
L
L
L
L
L
H
L
L
H
L
L
L
H
H
on
on
on
on
$4
$5
$6
$7
L
H L
L
L
H L
H
L
H H
L
L
H H
H
on
on
on
on
on
on
on
on
$8
$9
$A
$B
H
L
L
L
H
L
L
H
H
L
H
L
H
L
H
H
on
on
on
on
on
on
on
on
$C
$D
$E
$F
H
H L
L
H
H L
H
H
H H
L
H
H H
H
on
on
on
on
on
on
on
on
on
on
on
on
NOTES:
1. In the
No Decode
mode, outputs e, f, and g are unused and are all forced inactive (low). Output
h decoding is unaffected, i.e., unchanged from the other modes. The
No Decode
mode is used
for three purposes:
a. Individually controlling lamps.
b. Controlling a half digit with sign.
c. Controlling annunciators - examples: AM, PM, UHF, kV, mm Hg.
2. Can be used as capital S.
3. Can be used as capital B.
4. Can be used as small g.
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