參數(shù)資料
型號(hào)： ST49C107A-04
廠商： Exar Corporation
英文描述： Preprogrammed CPU Mother Board Frequency Generator(預(yù)編程CPU主板頻率發(fā)生器)
中文描述： 預(yù)編程的CPU主板頻率發(fā)生器（預(yù)編程的CPU主板頻率發(fā)生器）
文件頁(yè)數(shù)： 2/8頁(yè)
文件大?。?/td> 66K
代理商： ST49C107A-04
ST49C107A-04
Preliminary
2
Rev. P2.00
PIN CONFIGURATION
14 Lead SOIC (Jedec, 0.150”)
14
1
2
3
4
5
6
7
13
12
11
10
9
8
A0
1XCLK
V
CC
2XCLK
OE2
OE1
XTAL2
A1
A2
A3
AGND
DGND
PD*
XTAL1
PIN DESCRIPTION
Symbol
Pin #
Type
Description
A1
1
I
Frequency Select Address Input 2
1
.
Frequency Select Address Input 3
1
.
Frequency Select Address Input 4
1
.
A2
2
I
A3
3
I
AGND
4
O
Analog Ground.
DGND
5
O
Digital Ground.
Power-down (Active Low).
Shuts off chip when low
1
.
PD
6
I
XTAL1
7
I
Crystal Or External Clock Input.
A crystal can be connected to this pin and XTAL2 pin to
generate internal phase locked loop reference clock. For external 14.318 MHz clock, XTAL2
is left open or used as buffered clock output.
XTAL2
8
O
Crystal Output.
OE1
9
I
1X-CLOCK Output Enable (Active High).
1X-CLOCK output is three stated when this pin is
low
1
.
2X-CLOCK Output Enable (Active High).
2X-CLOCK output is three stated when this pin is
low
1
.
Programmed Output Clock.
OE2
10
I
2XCLK
11
O
V
CC
1XCLK
12
I
Positive Supply Voltage.
Single +5 volts.
13
O
2X-CLOCK Divide-by-two Output.
Frequency Select Address Input 1
1
.
A0
14
I
Notes
1
Have internal pull-up resistors on inputs.
相關(guān)PDF資料
PDF描述
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