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QX82527 Schematic ( PDF Datasheet ) - Intel

Teilenummer QX82527
Beschreibung SERIAL COMMUNICATIONS CONTROLLER
Hersteller Intel
Logo Intel Logo 




Gesamt 22 Seiten
QX82527 Datasheet, Funktion
82527
SERIAL COMMUNICATIONS CONTROLLER
CONTROLLER AREA NETWORK PROTOCOL
Automotive
Y Supports CAN Specification 2 0
Standard Data and Remote Frames
Extended Data and Remote Frames
Y Programmable Global Mask
Standard Message ldentifier
Extended Message ldentifier
Y 15 Message Objects of 8-Byte Data
Length
14 Tx Rx Buffers
1 Rx Buffer with Programmable Mask
Y Flexible CPU Interface
8-Bit Multiplexed
16-Bit Multiplexed
8-Bit Non-Multiplexed
(Synchronous Asynchronous)
Serial Interface
Y Programmable Bit Rate
Y Programmable Clock Output
Y Flexible Interrupt Structure
Y Flexible Status Interface
Y Configurable Output Driver
Y Configurable Input Comparator
Y Two 8-Bit Bidirectional I O Ports
Y 44-Lead PLCC Package
Y 44-Lead QFP Package
Y Pinout Compatibility with the 82526
The 82527 serial communications controller is a highly integrated device that performs serial communication
according to the CAN protocol It performs all serial communication functions such as transmission and
reception of messages message filtering transmit search and interrupt search with minimal interaction from
the host microcontroller or CPU
The 82527 is Intel’s first device to support the standard and extended message frames in CAN Specification
2 0 Part B It has the capability to transmit receive and perform message filtering on extended message
frames Due to the backwardly compatible nature of CAN Specification 2 0 the 82527 also fully supports the
standard message frames in CAN Specification 2 0 Part A
The 82527 features a powerful CPU interface that offers flexibility to directly interface to many different CPUs
It can be configured to interface with CPUs using an 8-bit multiplexed 16-bit multiplexed or 8-bit non-multi-
plexed address data bus for Intel and non-Intel architectures A flexible serial interface (SPI) is also available
when a parallel CPU interface is not required
The 82527 provides storage for 15 message objects of 8-byte data length Each message object can be
configured as either transmit or receive except for the last message object The last message object is a
receive-only buffer with a special mask design to allow select groups of different message identifiers to be
received
The 82527 also implements a global masking feature for message filtering This feature allows the user to
globally mask any identifier bits of the incoming message The programmable global mask can be used for
both standard and extended messages
The 82527 PLCC offers hardware or pinout compatibility with the 82526 It is pin-to-pin compatible with the
82526 except for pins 9 30 and 44 These pins are used as chip selects on the 82526 and are used as CPU
interface mode selection pins on the 82527
The 82527 is fabricated using Intel’s reliable CHMOS III 5V technology and is available in either 44-lead PLCC
or 44-lead QFP for the automotive temperature range (b40 C to a125 C)
Other brands and names are the property of their respective owners
Information in this document is provided in connection with Intel products Intel assumes no liability whatsoever including infringement of any patent or
copyright for sale and use of Intel products except as provided in Intel’s Terms and Conditions of Sale for such products Intel retains the right to make
changes to these specifications at any time without notice Microcomputer Products may have minor variations to this specification known as errata
COPYRIGHT INTEL CORPORATION 1995
December 1995
Order Number 272250-006






QX82527 Datasheet, Funktion
82527
ELECTRICAL CHARACTERISTICS
ABSOLUTE MAXIMUM RATINGS
Storage Temperature
Voltage from Any Pin
to VSS
b60 C to a150 C
b0 5V to a7 0V
Laboratory testing shows the 82527 will withstand
up to 10 mA of injected current into both RX0 and
RX1 pins for a total of 20 days without sustaining
permanent damage This high current condition may
be the result of shorted signal lines The 82527 will
not function properly if the RX0 RX1 input voltage
exceeds VCCa0 5V
NOTICE This is a production data sheet The specifi-
cations are subject to change without notice
WARNING Stressing the device beyond the ‘‘Absolute
Maximum Ratings’’ may cause permanent damage
These are stress ratings only Operation beyond the
‘‘Operating Conditions’’ is not recommended and ex-
tended exposure beyond the ‘‘Operating Conditions’’
may affect device reliability
D C Characteristics VCC e 5V g10% TA e b40 C to a125 C
Symbol
Parameter
Min
VIL Input Low Voltage (All except RX0 RX1 b0 5V
AD0–AD7 in Mode 3)
VIL1 Input Low Voltage for AD0 – AD7 in
Mode 3
b0 5V
VIL2 Input Low Voltage (RX0) for Comparator
Bypass Mode
VIL3 Input Low Voltage for Port 1 and Port 2
Pins Not Used for Interface to Host CPU
VIH Input High Voltage (All except RX0 RX1
RESET )
3 0V
VIH1
Input High Voltage (RESET )
Hysteresis on RESET
3 0V
200 mV
VIH2
Input High Voltage (RX0) for Comparator
Bypass Mode
4 0V
VIH3
Input High Voltage for Port 1 and Port 2
Pins Not Used for Interface to Host CPU
0 7 VCC
VOL Output Low Voltage (All Outputs except
TX0 TX1)
VOH
Output High Voltage (All Outputs except
VCC b 0 8V
TX0 TX1 CLOCKOUT)
VOHR1
ILK
CIN
Output High Voltage (CLOCKOUT)
Input Leakage Current
PIN Capacitance
0 8 VCC
Max
0 8V
0 5V
0 5V
0 3 VCC
VCC a 0 5V
VCC a 0 5V
0 45V
g10 mA
10 pF
Conditions
IOL e 1 6 mA
IOH e b200 mA
IOH e b80 mA
VSS k VIN k VCC
fXTAL e 1 KHz
6

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QX82527 pdf, datenblatt
82527
A C Characteristics for 8-Bit Multiplexed Non-Intel Mode (Mode 2)
272250 – 7
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