24C04A Microchip Technology Inc., 24C04A Datasheet
24C04A
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24C04A Summary of contents
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... NMOS serial devices. A special feature provides hardware write protection for the upper half of the block. The 24C04A has a page write capability eight bytes, and up to four 24C04A devices may be connected to the same two wire bus. This device offers fast (1ms) byte write and extended (-40° ...
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... ELECTRICAL CHARACTERISTICS 1.1 Maximum Ratings* V ...................................................................................7.0V CC All inputs and outputs w.r.t. V ............... -0. Storage temperature .....................................-65°C to +150°C Ambient temp. with power applied ................-65°C to +125°C Soldering temperature of leads (10 seconds) ............. +300°C ESD protection on all pins................................................4 kV *Notice: Stresses above those listed under “Maximum ratings” ...
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... T HIGH DAT SU DAT STA 24C04A Remarks After this period the first clock pulse is generated ns Only relevant for repeated START condition ns ns (Note Time the bus must be free before a new transmission can start ...
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... START and STOP conditions, while the 24C04A works as slave. Both master and slave can operate as transmitter or receiver but the master device deter- mines which mode is activated four 24C04As can be connected to the bus, selected by A1 and A2 chip address inputs. A0 must be tied ...
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... The eighth bit of the slave address determines if the master device wants to read or write to the 24C04A (Figure 4-1). The 24C04A monitors the bus for its corresponding slave address all the time. It generates an acknowl- edge bit if the slave address was true and it is not in a programming mode ...
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... When the word address is received by the 24C04A, it places it in the lower 8 bits of the address pointer defining which memory location written. (The A0 bit transmitted with the slave address is the ninth bit of the address pointer) ...
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... The device will accept slave and word addresses but if the memory accessed is write protected by the WP pin, the 24C04A will not generate an acknowledge after the first byte of data has been received, and thus the pro- gram cycle will not be started when the STOP condition is asserted ...
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... READ MODE In this mode the 24C04A transmits data to the master devide. As can be seen from Figure 9-2 and Figure 9-3, the master first sets up the slave and word addresses by doing a write. (Note: Although this is a read mode, the address pointer must be written to). During this period the 24C04A generates the necessary acknowledge bits as defined in the appropriate section ...
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... These inputs must be connected to either These two address inputs allow up to four 24C04A's can be connected to the bus 10.2 SDA Serial Address/Data Input/Output This is a bidirectional pin used to transfer addresses and data into and data out of the device open ...
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... Product Identification System To order or to obtain information, e.g., on pricing or delivery, please use the listed part numbers, and refer to the factory or the listed sales offices. 24C04A - /P Package: Temperature Range: Device: Sales and Support Data Sheets Products supported by a preliminary Data Sheet may have an errata sheet describing minor operational differences and recom- mended workarounds ...
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... Microchip Technology Inc. 24C04A DS11183F-page 11 ...
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... DS11183F-page 12 2004 Microchip Technology Inc. ...
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... Use of Microchip’s products as critical components in life support systems is not authorized except with express written approval by Microchip. No licenses are conveyed, implicitly or otherwise, under any intellectual property rights. 2004 Microchip Technology Inc. Trademarks The Microchip name and logo, the Microchip logo, Accuron, dsPIC ...
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... Via Salvatore Quasimodo, 12 20025 Legnano (MI) Milan, Italy Tel: 39-0331-742611 Fax: 39-0331-466781 Netherlands Waegenburghtplein 4 NL-5152 JR, Drunen, Netherlands Tel: 31-416-690399 Fax: 31-416-690340 United Kingdom 505 Eskdale Road Winnersh Triangle Wokingham Berkshire, England RG41 5TU Tel: 44-118-921-5869 Fax: 44-118-921-5820 07/12/04 2004 Microchip Technology Inc. ...