Document
Features
• Low Voltage and Standard Voltage Operation
– 5.0 (VCC = 4.5V to 5.5V) – 2.7 (VCC = 2.7V to 5.5V) – 2.5 (VCC = 2.5V to 5.5V) User Selectable Internal Organization – 1K: 128 x 8 or 64 x 16 – 2K: 256 x 8 or 128 x 16 – 4K: 512 x 8 or 256 x 16 4-Wire Serial Interface Self-Timed Write Cycle (10 ms max) High Reliability – Endurance: 1 Million Write Cycles – Data Retention: 100 Years – ESD Protection: >4000V 8-Pin PDIP and 8-Pin EIAJ SOIC Packages
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4-Wire Serial EEPROMs
1K (128 x 8 or 64 x 16) 2K (256 x 8 or 128 x 16) 4K (512 x 8 or 256 x 16)
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Description
The AT59C11/22/13 provides 1024/2048/4096 bits of serial EEPROM (Electrically Erasable Programmable Read Only Memory) organized as 64/128/256 words of 16 bits each, when the ORG Pin is connected to VCC and 128/256/512 words of 8 bits each when it is tied to ground. The device is optimized for use in many industrial and commercial applications where low power and low voltage operation are essential. The AT59C11/22/13 is available in space saving 8-pin PDIP and 8-pin EIAJ SOIC packages. The AT59C11/22/13 is enabled through the Chip Select pin (CS), and accessed via a 4-wire serial interface consisting of Data Input (DI), Data Output (DO), and Clock (CLK). Upon receiving a READ instruction at DI, the address is decoded and the data is clocked out serially on the data output pin DO, the WRITE cycle is completely selftimed and no separate ERASE cycle is required before WRITE. The WRITE cycle is only enabled when the part is in the ERASE/WRITE ENABLE state. Ready/Busy status can be monitored upon completion of a programming operation by polling the Ready/Busy pin. The AT59C11/22/13 is available in 5.0V ± 10%, 2.7V to 5.5V and 2.5V to 5.5V versions.
AT59C11 AT59C22 AT59C13
Pin Configurations
Pin Name CS CLK DI DO GND VCC ORG RDY/BUSY Function Chip Select Serial Data Clock Serial Data Input Serial Data Output Ground Power Supply Internal Organization Status Output 8-Pin SOIC 8-Pin PDIP
4-Wire, 1K Serial E2PROM
Rev. 0173K–07/98
1
Absolute Maximum Ratings*
Operating Temperature .................................. -55°C to +125°C Storage Temperature ..................................... -65°C to +150°C Voltage on Any Pin with Respect to Ground .....................................-1.0V to +7.0V Maximum Operating Voltage........................................... 6.25V DC Output Current........................................................ 5.0 mA *NOTICE: Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability
Block Diagram(1)
Note:
1.
When the ORG pin is connected to VCC, the x 16 organization is selected. When it is connected to ground, the x 8 orga.