MC14489B 查看數據表（PDF） - Motorola => Freescale

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MC14489B

Multy-Character LED Display/Lamp Driver

Motorola => Freescale 

Table 1. Triple-Mode Segment Decoder Function Table

Lamp Conditions

Bank Nibble Value

7-Segment Display

Characters

No DecodeG)

(Invoked via

Bits C1 to C7)

Hex Decode

Special

Decode

Binary

(Invoked via

(Invoked via

Hexadecimal MSB

LSB

Bits C1 to C5) Bits C1 to C7)

d

$0

LL L

"

u

I

$1

LL H

I

c

$2

LH L

2

,','

$3

LH H

3

,'I

c

b

a

on

on

on

on

$4

HL L

l./

,

u

on

$5

HL H

s@

I

L

on

on

$6

HH L

$7

HH H

$8

IH L L L

G

,,

8~

"

on

on

O

on

on

on

,O

on

$9

H LL H

9@

,-

on

$A

H LH L

'-I

,-,

u

on

on

on

$B

H LH H

'c,

$C

HH

L

,-

L

$0

HH

H

,

c'

$E

HH

L

E

$F

H Hr H

F

LI

on

on

on

~

on

on

on

on

on

on

on

on

0

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.

MC14489B

8

~

MOTOROLA

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