MD82C284-12/883 INTERSIL [Intersil Corporation], MD82C284-12/883 Datasheet

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MD82C284-12/883

Manufacturer Part Number
MD82C284-12/883
Description
Clock Generator and Ready Interface for 80C286 Processors
Manufacturer
INTERSIL [Intersil Corporation]
Datasheet
March 1997
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 321-724-7143
Copyright © Intersil Americas Inc. 2003. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.
Features
• This Circuit is Processed in Accordance to MIL-STD-
• Generates System Clock for 80C286 Processors
• Generates System Reset Output from Schmitt Trigger
• Uses Crystal or External Signal for Frequency Source
• Provides Local READY and MULTIBUS™ READY
• Static CMOS Technology
• Single +5V Power Supply
• Available in 18 Lead CERDIP Package
Pinout
883 and is Fully Conformant Under the Provisions of
Paragraph 1.2.1.
Input
- Improved Hysteresis
- Dynamically Switchable Between Two Input
Synchronization
Frequencies
SRDYEN
READY
ARDY
SRDY
GND
EFI
F/C
X1
X2
|
1
2
3
4
5
6
7
8
9
Intersil (and design) is a registered trademark of Intersil Americas Inc.
®
82C284/883
TOP VIEW
(CERDIP)
18
17
16
15
14
13
12
11
10
VCC
ARDYEN
S1
S0
NC
PCLK
RESET
RES
CLK
1
Ready Interface for 80C286 Processors
Description
The Intersil 82C284/883 is a clock generator/driver which
provides clock signals for 80C286 processors and support
components. It also contains logic to supply READY to the
CPU from either asynchronous or synchronous sources and
synchronous RESET from an asynchronous input with hys-
teresis.
Ordering Information
Functional Diagram
MD82C284-12/883
PART NUMBER
ARDYEN
SRDYEN
ARDY
SRDY
82C284/883
RES
F/C
EFI
X1
X2
S1
S0
SYNCHRONIZER
XTAL
OSC
-55
TEMP. RANGE
RESET
o
C to +125
PCLK GENERATOR
SYNCHRONIZER
READY LOGIC
Clock Generator and
o
MUX
C CERDIP
PACKAGE
F18.3
PKG. NO.
FN2968.1
RESET
CLK
READY
PCLK

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MD82C284-12/883 Summary of contents

Page 1

... It also contains logic to supply READY to the CPU from either asynchronous or synchronous sources and synchronous RESET from an asynchronous input with hys- teresis. Ordering Information PART NUMBER MD82C284-12/883 Functional Diagram RES 18 VCC X1 17 ...

Page 2

Absolute Maximum Ratings Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...

Page 3

TABLE 2. 82C284/883 A.C. ELECTRICAL PERFORMANCE SPECIFICATIONS (Continued) Device Guaranteed and 100% Tested. A.C. timings are referenced to 0.8V and 2.0V points of the signals as illustrated in datasheet wave- forms, unless otherwise specified. (Continued) (NOTE 1) PARAMETER SYMBOL CONDITIONS ...

Page 4

TABLE 2. 82C284/883 A.C. ELECTRICAL PERFORMANCE SPECIFICATIONS (Continued) Device Guaranteed and 100% Tested. A.C. timings are referenced to 0.8V and 2.0V points of the signals as illustrated in datasheet wave- forms, unless otherwise specified. (Continued) (NOTE 1) PARAMETER SYMBOL CONDITIONS ...

Page 5

CONFORMANCE GROUPS PDA Final Test Group A Groups C & D A.C. Test Conditions VCC RL DEVICE OUTPUT CL A.C. Specifications EFI INPUT CLK OUTPUT F/C INPUT RES INPUT OTHER DEVICE INPUT DEVICE OUTPUT FIGURE 1. A.C. DRIVE, SETUP, HOLD ...

Page 6

Timing Waveforms CLK NOTE: The EFI input LOW and HIGH times as shown are required to guarantee the CLK LOW and HIGH times shown. CLK RES DEPENDS ON RESET READY NOTE: This is an asynchronous input. The setup and hold ...

Page 7

Timing Waveforms (Continued) φ1 CLK PCLK t 7 F/C X1 CLK φ1 φ2 PCLK EFI FIGURE 5. CLK AS A FUNCTION OF F/C, PCLK, X1, AND EFI DURING DYNAMIC FREQUENCY SWITCHING NOTE: This is an ...

Page 8

Burn-In Circuit NOTES: 1. Supply Voltage: VCC = 5.5V, ±0.5V, GND = 0V. Driver Voltage: VIH = 4.5V ± 10%, VIL = 0V 2. Input Voltage Limits: VIL (Max) = 0.4V, VIH (Min) = 2.6V 3. Component Values ...

Page 9

Die Characteristics DIE DIMENSIONS: 63 mils x 69 mils x 19 mils ± 1 mil METALLIZATION: Type: Silicon - Aluminum Å Thickness: 8k Metallization Mask Layout SRDYEN READY EFI F/C X1 All Intersil U.S. products are manufactured, assembled and tested ...

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