X24640P Xicor, X24640P Datasheet
X24640P
Related parts for X24640P
X24640P Summary of contents
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... AND ADDRESS (SDA) COMMAND SCL DECODE CONTROL S2 DEVICE SELECT Xicor, 1995, 1996 Patents Pending 7038-1.2 4/25/97 T0/C2/D0 SH X24640 2 PROM with Block Lock DESCRIPTION The X24640 is a CMOS Serial E organized The device features a serial inter- 2 PROM Array) face and software protocol allowing operation on a simple two wire bus ...
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... X24640 2 Xicor E PROMs are designed and tested for applica- tions requiring extended endurance. Inherent data retention is greater than 100 years. PIN DESCRIPTIONS Serial Clock (SCL) The SCL input is used to clock all data into and out of the device. Serial Data (SDA) SDA is a bidirectional pin used to transfer data into and out of the device ...
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X24640 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 ...
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X24640 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 ...
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X24640 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 ...
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X24640 WRITE OPERATIONS Byte Write For a 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 words in the ...
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X24640 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 ...
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X24640 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. ...
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X24640 WRITE PROTECT REGISTER (WPR) Writing to the Write Protect Register The Write Protect Register can only be modified by performing a “Byte Write” operation directly to the address FFFFh as described below. The Data Byte must contain zeroes where ...
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X24640 reset, nor can RWEL and WEL be reset in one write operation. RWEL can be reset by writing 00000010 to FFFFh; but this is the same operation as in step 3 described below, and will result in programing BL0, ...
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X24640 ABSOLUTE MAXIMUM RATINGS* Temperature under Bias X24640.......................................– +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 ...
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X24640 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 & Write Cycle Limits Symbol f SCL Clock ...
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X24640 Bus Timing SCL t SU:STA SDA IN SDA OUT Write Cycle Limits Symbol Parameter (6) t Write Cycle Time WC Notes: (5) Typical values are for and nominal supply voltage (5V ...
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X24640 PACKAGING INFORMATION 8-LEAD PLASTIC SMALL OUTLINE GULL WING PACKAGE TYPE S 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) PIN 1 INDEX PIN 1 0.014 (0.35) ...
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X24640 PACKAGING INFORMATION 20-LEAD PLASTIC, TSSOP PACKAGE TYPE V 0 – 8 See Detail “A” NOTE: ALL DIMENSIONS IN INCHES (IN P ARENTHESES IN MILLIMETERS) .025 (.65) BSC .169 (4.3) .252 (6.4) BSC .177 (4.5) .252 (6.4) .260 (6.6) .047 ...
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X24640 PACKAGING INFORMATION 8-LEAD PLASTIC DUAL IN-LINE PACKAGE TYPE P HALF SHOULDER WIDTH ON ALL END PINS OPTIONAL 0.015 (0.38) MAX. TYP . 0.010 (0.25) NOTE: 1. ALL DIMENSIONS IN INCHES (IN PARENTHESES IN MILLIMETERS) 2. PACKAGE DIMENSIONS EXCLUDE MOLDING ...
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... Xicor, Inc. makes no warranty of merchantability or fitness for any purpose. Xicor, Inc. reserves the right to discontinue production and change specifications and prices at any time and without notice. Xicor, Inc. assumes no responsibility for the use of any circuitry other than circuitry embodied in a Xicor, Inc. product. No other circuits, patents, licenses are implied. ...