27C512 DATASHEET PDF

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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Full text of “IC Datasheet: 27C EPROM Data Sheet”

Drawing is not to scaie Table The purpose of the bulk capacitor is to overcome the voltage drop caused by the inductive effects of PCB traces. The data to be programmed is applied to 8 datazheet in parallel to the data output pins.

Data is introduced by selectively program- ming ‘O’s into the desired bit locations. Package Mechanical Data 17 Figure The M27C should be placed within 2.

LCC Connections 5 Figure 5. No license is granted by implication or othenwise under any patent or patent rights of STMicroelectronics. A new pattern can then be written to 27v512 device by following the programming procedure. The levels required for the address and data in- puts are TTL.

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27C512 Datasheet

For a list of available options speed, package, device, please contact your nearest ST Sales Dtasheet etc. Testing Input Output Waveform 10 Figure 8.

The magnitude of the transient current peaks is dependent on the capacitive and inductive loading of the device at the output. This mode is intended for use by programming equipment to automatically match the device to be dataasheet with its corresponding programming algorithm.

It should be noted that sunlight and some type of fluorescent lamps have wavelengths in the A range. However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any datsaheet of patents or other rights of third parties which may result from its use. The verify is accomplished with G at V L.

27C Datasheet PDF –

Output Enable G is the output control and should be used to gate data to the output pins, indepen- dent of device selection. Search the history of over billion web pages on the Internet. A single power supply is required in theread mode. Operating Modes 6 Table 3. Datashret Names 4 Figure 3. The M27C is in the pro- g. Program Verify A verify read should be performed on the pro- grammed bits to determine that they were correct ly programmed. Designers should check that the operating conditions in their circuit match the measurement conditions when relying on the quoted parame- ters.

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To activate the ES mode, the programming equipment must force 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.

AC Measurement Conditions 10 Figure 7. Minimum DC voltage on Input or Output is The integrated dose i. For the most efficient use of these two control lines, E should be decoded dataheet used as the prima- ry device selecting function, while G should be made a common connection to all d evices in the array and connected to the READ line from the system control bus.

27C512 Datasheet PDF

A high level E input inhibits the other M27C51 2s from being pro- grammed. DIP Connections Figure 5. Specifications mentioned in datxsheet publication are subject to change without notice.

Vqc is specified to be 6. Exposure to Ab- solute Maximum Rating conditions for extended periods may affect device reliability. Although only ‘O’s will be programmed, both ‘1 ‘s and ‘O’s can be present in the data word.