HT93LC56 Datasheet, PDF (1/10 Pages) Holtek Semiconductor Inc – 2K 3-Wire CMOS Serial EEPROM

HT93LC56
2K 3-Wire CMOS Serial EEPROM
Features
• _{Operating voltage VCC}
– _{Read: 2.0V~5.5V}
– _{Write: 2.4V~5.5V}
• _{Low power consumption}
– _{Operating: 5mA max.}
– _{Standby: 10µA max.}
• _{User selectable internal organization}
– _{2K(HT93LC56): 256×8 or 128×16}
• _{3-wire Serial Interface}
• _{Write cycle time: 5ms max.}
• _{Automatic erase-before-write operation}
• _{Word/chip erase and write operation}
• _{Write operation with built-in timer}
• _{Software controlled write protection}
• _{10-year data retention after 100K rewrite}
cycles
• ₁₀⁶ _{rewrite cycles per word}
• _{8-pin DIP/SOP package}
• _{Commercial temperature range}
(0°C to +70°C)
General Description
The HT93LC56 is a 2K-bit low voltage nonvola-
tile, serial electrically erasable programmable
read only memory device using the CMOS float-
ing gate process. Its 2048 bits of memory are
organized into 128 words of 16 bits each when the
ORG pin is connected to VCC or organized into
256 words of 8 bits each when it is tied to VSS. The
device is optimized for use in many industrial
and commercial applications where low power
and low voltage operation are essential. By
popular microcontroller, the versatile serial in-
terface including chip select (CS), serial clock
(SK), data input (DI) and data output (DO) can
be easily controlled.
Block Diagram
1
6th May ’99