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Full text of “IC Datasheet: 27C EPROM Data Sheet” . several design innovations described in the M27C datasheet to improve programming effi- ciency. 27C Kilobit (64k X 8 Bit) CMOS EPROM. n Fast access time Speed options as fast ns n Low power consumption 20 µA typical CMOS standby current n. datasheet to improve programming efficiency and to provide adequate margin for reliability. Before starting the programming the internal MARGIN MODE circuit.

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For a 27f512 of available options speed, package, device, please contact your nearest ST Sales Of- etc. Data is introduced by selectively program- ming ‘O’s into the desired bit locations.

27C512 – 27C512 512K EPROM Datasheet

The datashset of the bulk capacitor is to overcome the voltage drop caused by the inductive effects of PCB traces. The bulk capacitor should be located near the power supply connection point. It should be noted that sunlight and some type of fluorescent lamps have wavelengths in the A range. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics.

Vqc is specified to be 6. Specifications mentioned in this publication are subject to change without notice.

27C512 Datasheet

The verify is accomplished with G at V L. The associated transient voltage peaks can be suppressed by complying with the two line output control and by properly selected decoupling capacitors. The data to be programmed is applied datasneet 8 bits in parallel to the data output pins. Speed obtained with High Speed AC measurement conditions. Vcc must be applied simultaneously with or daatasheet Vpp and removed simultaneously or after Vpp.


The levels required for the address and data in- puts are TTL.

A new pattern can then be written to the device by following the programming procedure. It is recommended that a 0.

It is ideally suited for applica- tions where fast turn-around and pattern experi- mentation are important requirements and is organized as by 8 bits. DIP Connections 5 Figure 4. Capacitance 10 Table 7. DIP Connections Figure 5. Package Mechanical Data 17 Figure This mode is intended for use by programming equipment to automatically match the device to 227c512 programmed with its corresponding programming algorithm.

This publication supersedes and replaces all information previously supplied. These are stress ratings only, and operation of the device at these, or any other conditions out- side those indicated in the Operating sections of this specification, is not implied. LCC Connections 5 Figure 5. The M27C is in the pro- g. Then a sequence of 1 00 is program pulses are ap- datsaheet to each byte until a correct verify occurs. A single power supply is required in theread mode.

Although only ‘O’s will be programmed, both ‘1 ‘s and ‘O’s can be present in the data word.


The recommended erasure procedure for the M27C51 2 is exposure to short wave ultraviolet light which has wavelength A. Package Outline 17 Table Ice, has three seg- ments that are of interest to the system designer: The FDIP28W window ceramic frit-seal package has transparent lid which allows the user to ex- pose the chip to ultraviolet light to erase the bit pat- tern. To activate the ES mode, the programming equipment must force The magnitude of the transient current peaks is dependent on the capacitive and inductive loading of the device at the output.

(Datasheet) 27C pdf – CHMOS EPROM (1-page)

Chip Enable E is the power control and should be used 27c51 device selection. The integrated dose i. Two identifier bytes may then be se- quenced from the device outputs by toggling ad- dress line AO from Vil to Vih. The parameters in the DC and AC Characteristic tables that follow are de- rived from tests performed under the Measure- ment Conditions summarized in the relevant tables.

No license is granted by implication or othenwise under any patent or patent rights of STMicroelectronics. Signal Dxtasheet 4 Figure 3.