Details, datasheet, quote on part number: M27C1024-90C7TR
CategoryMemory => EPROM => 8 Mb
Description1 Mbit 64kb X16 uv EPROM And OTP EPROM
CompanyST Microelectronics, Inc.
DatasheetDownload M27C1024-90C7TR datasheet


Features, Applications

10% SUPPLY VOLTAGE in READ OPERATION FAST ACCESS TIME: 35ns LOW POWER CONSUMPTION: Active Current 5MHz Standby Current 100A PROGRAMMING VOLTAGE: 0.25V PROGRAMMING TIME: 100s/byte (typical) ELECTRONIC SIGNATURE Manufacturer Code: 0020h Device Code: 008Ch

DESCRIPTION The a 1 Mbit EPROM offered in the two ranges UV (ultra violet erase) and OTP (one time programmable). It is ideally suited for microprocessor systems requiring large data or program storage and is organized as 65,536 words of 16 bits. The FDIP40W (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 to the device by following the programming procedure. For application where the content is programmed only one time and erasure is not required, the M27C1024 is offered PDIP40, PLCC44 and x 14mm) packages. Table 1. Signal Names

G P VPP VCC VSS Address Inputs Data Outputs Chip Enable Output Enable Program Supply Voltage Ground

DEVICE OPERATION The modes of operations of the M27C1024 are listed in the OperatingModes table. A single power supply is required in the read mode. All inputs are TTL levels except for Vpp and on A9 for Electronic Signature. Read Mode The M27C1024 has two control functions, both of which must be logically active in order to obtain data at the outputs. Chip Enable (E) is the power control and should be used for device selection. Output Enable (G) is the output control and should be used to gate data to the output pins, independent of device selection. Assuming that the addresses are stable, the address access time (tAVQV) is equalto the delay from E to output (tELQV). Data is available at the output after a delay of tOE from the falling edge of G, assuming that E has been low and the addresses have been stable for at least t AVQV-tGLQV. Standby Mode The M27C1024 has a standby mode which reduces the active current from to 100A. The M27C1024 is placed in the standby mode by applying a TTL high signal to the E input. When in the standby mode, the outputs are in a high impedance state, independent of the G input.

Parameter Ambient Operating Temperature Under Bias Storage Temperature Input or Output Voltages (except A9) Supply Voltage A9 Voltage Program Supply Voltage

Notes: 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 i mplied. 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.

Mode Read Output Disable Program Verify Program Inhibit Standby Electronic Signature
- Q15 Data Output Hi-Z Data Input Data Output Hi-Z Codes
Identifier Manufacturer's Code Device Code A0 VIL VIH Q0 0 Hex Data 20h 8Ch


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