X24641 Intersil Corporation, X24641 Datasheet
X24641
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X24641 Summary of contents
Page 1
... Three device select inputs (S devices to share a common two wire bus. Hardware Write Protection is provided through a Write Protect (WP) input pin on the X24641. When the WP pin is HIGH, the upper quadrant of the Serial E array is protected against any nonvolatile write attempts. ...
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... V as appro Symbol Description Device Select Inputs SDA Serial Data SCL Serial Clock WP Write Protect V Ground SS Supply Voltage V CC 8-LEAD SOIC X24641 SCL SDA 7026 FM 02 7026 FRM T01 ...
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... X24641 DEVICE OPERATION The device supports a bidirectional, bus oriented protocol. The protocol defines any device that sends data onto the bus as a transmitter, and the receiving device as the receiver. The device controlling the transfer is a master and the device being controlled is the slave ...
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... X24641 Stop Condition All communications must be terminated by a stop condition, which is a LOW to HIGH transition of SDA when SCL is HIGH. The stop condition is also used to place the device into the standby power mode after a read sequence. A stop condition can only be issued after the transmitting device has released the bus. ...
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... X24641 DEVICE ADDRESSING Following a start condition, the master must output the address of the slave it is accessing. The first four bits of the Slave Address Byte are the device type identifier bits. These must equal “1010”. The next 3 bits are the ...
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... X24641 WRITE OPERATIONS Byte Write For a Byte Write Operation, the device requires the Slave Address Byte, the Word Address Byte 1, and the Word Address Byte 0, which gives the master access to any one of the bytes in the array. Upon receipt of the Word Address Byte 0, the device responds with an acknowledge, and waits for the fi ...
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... X24641 Acknowledge Polling The maximum write cycle time can be significantly reduced using Acknowledge Polling. To initiate Acknowledge Polling, the master issues a start condi- tion followed by the Slave Address Byte for a write or read operation. If the device is still busy with the nonvolatile write cycle, then no ACK will be returned. If ...
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... X24641 Random Read Random read operation allows the master to access any memory location in the array. Prior to issuing the Slave Address Byte with the R/W bit set to one, the master must first perform a “Dummy” write operation. The master issues the start condition and the Slave ...
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... X24641 ABSOLUTE MAXIMUM RATINGS* Temperature under Bias X24641.......................................– +135 C Storage Temperature ........................– +150 C Voltage on any Pin with Respect to V .................................... –1V to +7V SS D.C. Output Current ..............................................5mA Lead Temperature (Soldering, 10 seconds) .............................. 300 C RECOMMENDED OPERATING CONDITIONS Temperature Min. Commercial 0 C Industrial – ...
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... X24641 A.C. CONDITIONS OF TEST Input Pulse Levels V CC Input Rise and Fall Times Input and Output Timing Levels A.C. OPERATING CHARACTERISTICS (Over the recommended operating conditions, unless otherwise specified.) Read & Program Cycle Limits Symbol f SCL Clock Frequency SCL T Noise Suppression Time I Constant at SCL, SDA Inputs ...
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... The program cycle time is the time from a valid stop condition of a program sequence to the end of the internal erase/program cycle. During the program cycle, the X24641 bus interface circuits are disabled, SDA is allowed to remain HIGH, and the device does not respond to its slave address. ...
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... X24641 PACKAGING INFORMATION 8-LEAD PLASTIC SMALL OUTLINE GULL WING PACKAGE TYPE S PIN 1 INDEX (4X) 7 0.050 (1.27) 0.010 (0.25) 0.020 (0.50) 0 – 8 0.016 (0.410) 0.037 (0.937) NOTE: ALL DIMENSIONS IN INCHES (IN P ARENTHESES IN MILLIMETERS) 0.150 (3.80) 0.158 (4.00) PIN 1 0.014 (0.35) 0.019 (0.49) 0.188 (4.78) 0.197 (5.00) 0.004 (0.19) 0.010 (0.25 0.0075 (0.19) 0.250" ...
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... V CC Blank = 5V 10% 2.5 = 2.5V to 5.5V 1.8 = 1.8V to 3.6V Temperature Range Blank = + – +85 C Package X24641 S8= 8-Lead SOIC X Blank = 8-Lead SOIC X Blank = 4.5V to 5.5V + 4.5V to 5.5V, – + 2.5V to 5.5V + 2.5V to 5.5V, – + 1.8V to 3.6V + 1.8V to 3.6V, – +85 C ...