EN27LV01090TI データシートの表示（PDF） - Eon Silicon Solution Inc.

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EN27LV01090TI

1Megabit Low Voltage EPROM (128K x 8)

Eon Silicon Solution Inc. 

EN27LV010 / EN27LV010B

PROGRAM INHIBIT MODE

Programming of multiple EN27LV010/EN27LV010B in parallel with different data is also easily

accomplished by using the Program Inhibit Mode. Except for CE , all like inputs of the parallel

EN27LV010/EN27LV010B may be common. A TTL low-level program pulse applied to an

EN27LV010/EN27LV010B CE input with VPP = 12.75 ± 0.25V, PGM LOW, and OE HIGH

will program that EN27LV010/EN27LV010B. A high-level CE input inhibits the other

EN27LV010/EN27LV010B from being programmed.

PROGRAM VERIFY MODE

Verification should be performed on the programmed bits to determining that they were

correctly programmed. The verification should be performed with OE and CE at VIL, PGM at

VIH, and VPP at its programming voltage.

AUTO PRODUCT IDENTIFICATION

The Auto Product Identification mode allows the reading out of a binary code from an EPROM that

will identify its manufacturer and type. This mode is intended for use by programming equipment

for the purpose of automatically matching the device to be programmed with its corresponding

programming algorithm. This mode is functional in the 25°C ± 5°C ambient temperature range

that is required when programming the EN27LV010/EN27LV010B.

To activate this mode, the programming equipment must force 12.0 V ± 0.5V on address line A9

of the EN27LV010/EN27LV010B. Two identifier bytes may then be sequenced from the device

outputs by toggling address line A0 from VIL to VIH, when A1 = VIH. All other address lines must

be held at VIL during Auto Product Identification mode.

Byte 0 (A0 = VIL) represents the manufacturer code, and byte 1 (A0 = VIH), the device code. For

the EN27LV010/EN27LV010B, these two identifiers bytes are given in the Mode Select Table. All

identifiers for manufacturer and device codes will possess odd parity, with the MSB (DQ7) defined

as the parity bit. When A1 = VIL, the EN27LV010/EN27LV010B will read out the binary code of

7F, continuation code, to signify the unavailability of manufacturer ID codes.

4800 Great America Parkway Ste 202

Santa Clara, CA. 95054

4

Preliminary

Tel: 408-235-8680

Fax: 408-235-8685

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