Description
The M27V322 is a 32 Mbit (2Mb ×16) low-voltage UV EPROM offered in the UV range (ultra violet erase). It is ideally suited for microprocessor systems requiring large data or program storage. It is organized as 2 MWords of 16 bit. The pin-out is compatible with a 32 Mbit Mask ROM. The FDIP42W (window ceramic frit-seal package) has a transparent lid which allows the user to expose the chip to ultraviolet light to erase the bit pattern. A new pattern can then be written rapidly to the device by following the programming procedure. For applications where the content is programmed only one time and erasure is not required, the M27V322 is offered in PDIP42 package.
Feature summary
■ 3.3V ± 10% supply voltage in Read operation
■ Read access time
– 100ns at VCC = 3.0V to 3.6V
■ Pin compatible with M27C322
■ Word-wide configurable
■ 32 Mbit Mask ROM replacement
■ Low power consumption
– Active Current 30mA at 5MHz
– Stand-by Current 60µA
■ Programming voltage: 12V ± 0.25V
■ Programming time: 50µs/word
■ Electronic signature
– Manufacturer Code: 0020h
– Device Code: 0034h
M27V322-100F1 Datasheet (PDF) – STMicroelectronics
