INTEL 82527 PDF
Description, Serial Communications Controller Area Network Protocol. Company, Intel Corporation. Datasheet, Download datasheet. Quote. Find where. – Express ii. Advance Information. Datasheet. Information in this document is provided in connection with Intel products. No license, express or implied. Intel. 8 bit Controllers. 16 bit Controllers. 32 bit Controllers. DSPs PDF Intel Data Sheet; SERIAL COMMUNICATIONS.
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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. It has the capability to transmit, iintel, and perform message filtering on extended message frames.
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Due to the backwardly compatible nature of CAN Specification 2. The provides storage for 15 message objects of 8-byte data length.
Each message object can be configured as 82257 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 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 PLCC offers hardware, or pinout, compatibility with the It is pin-to-pin compatible with the except for pins 9, 30, and These pins are used as chip selects on the and are used as CPU interface mode selection pins on the Information in this document is provided in connection with Intel products. Intel retains the right to make changes to these specifications at any time, without notice.
Microcomputer Products may have minor ihtel to this intep known as errata. Table 1 presents the legend for interpreting the pin types. Provides ground for analog iintel.
Provides power for entire device. If an external oscillator is used XTAL2 must be floated, or not be connected.
This output may be used to drive the oscillator of the host microcontroller. No falling edge on the reset pin is required during a cold reset event. A recessive level is read when RX0 l RX1.
A dominant level is read when RX1 l RX0. During a recessive bit TX0 is high and TX1 is low. During a dominant bit TX0 is low and TX1 is high. Address bus in 8-bit non-multiplexed mode.
In Serial Interface mode, the following pins have the following meaning: Data bus in 8-bit non-multiplexed mode. P1 pins in 8-bit multiplexed mode and serial 825227. Mode0 Mode1 I I These pins select one of the four parallel interfaces.
These pins are weakly held low during reset. AS used for non-Intel modes, except Mode 3 this pin must be tied high.
E used for non-Intel modes, except Mode 3 Asynchronous this pin must be tied high. READY is an open-drain output to the host microcontroller. MISO is the serial data output for the serial interface mode. This is a production data sheet.
The specifications are subject to change without notice. These are stress ratings only. This high current condition may be the result of shorted signal lines. The time between the falling edge of E for the previous write cycle and the rising edge of E for the current read cycle is greater than 2 tMCLK. The time between the falling edge of E for the previous write cycle and the falling edge of E for the current write cycle is less than 2 tMCLK.
E and AS must be tied high in this mode. An external pullup is required to drive this signal to a higher voltage. Characteristics for Serial Interface Mode Conditions: The following differences exist between the version and the revision. There were no specification changes between the version and the revision. The pin numbers were removed from the pin description list to accommodate the new ld QFP package. XTAL2 is an output.
This is the revision of the data sheet. Remove notice on page 1 concerning Advance Information Data Sheet. Page 5, add VIH e 0. Page 7, tRLDV increased from 45 ns to 55 ns. Page 12, tCHAI decreased from 10 ns to 7 ns. Page 14, tCHAI decreased from 10 ns to 7 ns.
Page 7, tCLLL decreased from 20 ns to 10 ns. Page 2, Figure 2: Laboratory testing shows the will withstand up to 10 mA for injected current into both RX0 and RX1 pins for a total of 20 days without sustaining permanent damage. Page 12, tCHDV decreased from 25 ns to 15 ns. Page 14, tELDV decreased from 25 ns to 15 ns. Page 7, tAVLL decreased from 20 ns to 7.
Page 7, tWHQX decreased from 20 ns to ICC supply current has been reduced to 50 mA from mA. An external pullup is required to drive this signal to a higher voltage Mode 3.
The input voltage in the A. The RAM block in Figure 1. The Mode0 and Mode1 pin descriptions were modified to include the following note: VIL1 for RX0 in comparator bypass mode was added.
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VIH2 for RX0 in comparator bypass mode was added. IPD current was changed from 10 mA minimum to 25 mA maximum. The following note was added to the electrical characteristics: Port pins are weakly held high after reset until the port configuration registers are written 9FH, AFH. Characteristics Specifications have been removed and replaced by the Internal Delay 1 and Internal Delay 2 specifications.
These specifications reflect the production test methodology which requires these two delays to be tested together. Delay Dominant to Recessive b.
Delay Recessive to Dominant c. Intek Delay with Comparator Bypassed The following note was added: Fall Time 21 The time between the falling edge of E for the previous write cycle and the next falling edge of E for the current write cycle is less than 2 tMCLK. Characteristics for Serial Interface Mode have been changed: The note in the A.