參數(shù)資料
型號: HD3-4702-9
英文描述: IC-BAUD RATE GENERATOR
中文描述: 集成電路波特率發(fā)生器
文件頁數(shù): 2/7頁
文件大?。?/td> 41K
代理商: HD3-4702-9
5-2
Pin Description
PIN NUMBER
TYPE
SYMBOL
DESCRIPTION
16
V
CC
V
CC
: Is the +5V power supply pin. A 0.1
μ
F capacitor between pins 16 and 8 is
recommended for decoupling.
8
GND
GROUND
5
I
CP
EXTERNAL CLOCK INPUT
4
I
E
CP
EXTERNAL CLOCK ENABLE: A low signal on this input allows the baud rate to be
generated from the CP input.
7
I
I
X
CRYSTAL INPUT
6
O
O
X
CRYSTAL DRIVE OUTPUT
15
I
I
M
MULTIPLEXED INPUT
11, 12, 13, 14
I
S0 - S3
BAUD RATE SELECT INPUTS
9
O
CO
CLOCK OUTPUT
1, 2, 3
O
Q
0
- Q
2
SCAN COUNTER OUTPUTS
10
O
Z
BIT RATE OUTPUT
CLOCK MODES AND INITIALIZATION
IX
E
CP
CP
OPERATION
H
L
Clocked from I
X
X
L
Clocked from CP
X
H
H
Continuous Reset
X
L
Reset During 1st CP = High
Time
H = HIGH Level
L = LOW Level
X = Don’t Care
= Clock Pulse
= 1st HIGH Level Clock Pulse after E
CP
goes LOW
NOTE: Actual output frequency is 16 times the indicated Output
Rate, assuming a clock frequency of 2.4576MHz.
HD-4702
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PDF描述
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