M27C322

Pinout




Specifications

Symbol	Parameter	Value	Unit
TA	Ambient Operating Temperature (3)	40 to 125	°C
TBIAS	Temperature Under Bias	50 to 125	°C
TSTG	Storage Temperature	65 to 150	°C
VIO (2)	Input or Output Voltage (except A9)	2 to 7	V
VCC	Supply Voltage	2 to 7	V
VA9 (2)	A9 Voltage	2 to 13.5	V
VPP	Program Supply Voltage	2 to 14	V

Note: 1. Except for the rating "Operating Temperature Range", stresses above those listed in the Table "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only and operation of the device at these or any other conditions above those indicated in the Operating sections of this specification is not implied. Exposure to Absolute Maximum Rating conditions for extended periods may affect device reliability. Refer also to the STMicroelectronics SURE Program and other relevant quality documents.
2. Minimum DC voltage on Input or Output is 0.5V with possible undershoot to 2.0V for a period less than 20ns. Maximum DC voltage on Output is VCC +0.5V with possible overshoot to VCC +2V for a period less than 20ns.
3. Depends on range.


Description

The M27C322 is a 32 Mbit EPROM offered in the UV range (ultra violet erase). It is ideally suited for microprocessor systems requiring large data or program storage. It is organised as 2 MWords of 16 bit. The pin-out is compatible with a 32 Mbit Mask ROM.

The M27C322(window ceramic frit-seal package) has a transparent lid which allows the user to ex-pose the chip to ultraviolet light to erase the bit pat-tern. A new pattern can then be written rapidly to the device by following the programming proce-dure.

For applications where the content is programmed only one time and erasure is not required, the M27C322 is offered in PDIP42 package.