Generator Driver. 82C84A Datasheet

82C84A Datasheet PDF, Equivalent


Part Number

82C84A

Description

CMOS Clock Generator Driver

Manufacture

Intersil Corporation

Total Page 10 Pages
PDF Download
Download 82C84A Datasheet


82C84A Datasheet
82C84A
March 1997
CMOS Clock Generator Driver
Features
Description
• Generates the System Clock For CMOS or NMOS
Microprocessors
• Up to 25MHz Operation
• Uses a Parallel Mode Crystal Circuit or External
Frequency Source
• Provides Ready Synchronization
• Generates System Reset Output From Schmitt Trigger
Input
• TTL Compatible Inputs/Outputs
• Very Low Power Consumption
• Single 5V Power Supply
• Operating Temperature Ranges
- C82C84A . . . . . . . . . . . . . . . . . . . . . . . . .0oC to +70oC
- I82C84A . . . . . . . . . . . . . . . . . . . . . . . . -40oC to +85oC
- M82C84A . . . . . . . . . . . . . . . . . . . . . . -55oC to +125oC
The Intersil 82C84A is a high performance CMOS Clock Generator-
driver which is designed to service the requirements of both CMOS
and NMOS microprocessors such as the 80C86, 80C88, 8086 and
the 8088. The chip contains a crystal controlled oscillator, a divide-by-
three counter and complete “Ready” synchronization and reset logic.
Static CMOS circuit design permits operation with an external fre-
quency source from DC to 25MHz. Crystal controlled operation to
25MHz is guaranteed with the use of a parallel, fundamental mode
crystal and two small load capacitors.
All inputs (except X1 and RES) are TTL compatible over tempera-
ture and voltage ranges.
Power consumption is a fraction of that of the equivalent bipolar cir-
cuits. This speed-power characteristic of CMOS permits the
designer to custom tailor his system design with respect to power
and/or speed requirements.
Ordering Information
PART
NUMBER
CP82C84A
IP82C84A
CS82C84A
IS82C84A
CD82C84A
ID82C84A
MD82C84A/B
8406801VA
MR82C84A/B
84068012A
TEMP. RANGE
0oC to +70oC
-40oC to +85oC
0oC to +70oC
-40oC to +85oC
0oC to +70oC
-40oC to +85oC
-55oC to +125oC
-55oC to +125oC
PACKAGE
PKG.
NO.
18 Ld PDIP E18.3
E18.3
20 Ld PLCC N20.35
N20.35
18 Ld CERDIP F18.3
F18.3
F18.3
SMD#
F18.3
20 Pad CLCC J20.A
SMD#
J20.A
Pinouts
82C84A (PDIP, CERDIP)
TOP VIEW
CSYNC 1
PCLK 2
AEN1 3
RDY1 4
READY 5
RDY2 6
AEN2 7
CLK 8
GND 9
18 VCC
17 X1
16 X2
15 ASYNC
14 EFI
13 F/C
12 OSC
11 RES
10 RESET
82C84A (PLCC, CLCC)
TOP VIEW
3 2 1 20 19
RDY1 4
READY 5
RDY2 6
AEN2 7
NC 8
18 X2
17 ASYNC
16 EFI
15 F/C
14 NC
9 10 11 12 13
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
http://www.intersil.com or 407-727-9207 | Copyright © Intersil Corporation 1999
4-287
File Number 2974.1

82C84A Datasheet
Functional Diagram
82C84A
RES
X1
X2
11
17
16
13
F/C
EF1
CSYNC
RDY1
AEN1
RDY2
AEN2
14
1
4
3
6
7
15
ASYNC
XTAL
OSCILLATOR
÷3
SYNC
CK
DQ
FF1
D 10
Q RESET
CK
12
OSC
÷2
SYNC
2
PCLK
8
CLK
CK 5
D Q READY
FF2
CONTROL PIN
LOGICAL 1
LOGICAL 0
F/C
External Clock
Crystal Drive
RES
Normal
Reset
RDY1, RDY2
Bus Ready
Bus Not Ready
AEN1, AEN2
Address Disabled Address Enable
ASYNC
1 Stage Ready
Synchronization
2 Stage Ready
Synchronization
4-288


Features Datasheet pdf 82C84A March 1997 CMOS Clock Generator Driver Description The Intersil 82C84A is a high performance CMOS Clock Genera tordriver which is designed to service the requirements of both CMOS and NMOS microprocessors such as the 80C86, 80C8 8, 8086 and the 8088. The chip contains a crystal controlled oscillator, a div ide-bythree counter and complete “Rea dy” synchronization and reset logic. Static CMOS circuit design permits oper ation with an external frequency source from DC to 25MHz. Crystal controlled o peration to 25MHz is guaranteed with th e use of a parallel, fundamental mode c rystal and two small load capacitors. A ll inputs (except X1 and RES) are TTL c ompatible over temperature and voltage ranges. Power consumption is a fraction of that of the equivalent bipolar circ uits. This speed-power characteristic o f CMOS permits the designer to custom t ailor his system design with respect to power and/or speed requirements. Feat ures • Generates the System Clock For CMOS or NMOS Microprocessors .
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