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NM93C46 Rev. E

CS

SK

DI

DO

High - Z

High - Z

CLEARING READY STATUS

Star t

Bit

Note: This Star t bit can also be par t of a next instr uction. Hence the cycle

can be continued (instead of getting ter minated, as shown) as if a new

instr uction is being issued.

Busy

Ready

Address

Bits(6)

CS

SK

DI

DO

High - Z

ERASE CYCLE (ERASE)

Star t

Bit

93C46:

Address bits patter n -> User defined

Opcode

Bits(2)

1

1

1

A5

A4

A1

A0

Busy

Ready

Address

Bits(6)

CS

SK

DI

DO

High - Z

ERASE ALL CYCLE (ERAL)

Star t

Bit

93C46:

Address bits patter n -> 1-0-x-x-x-x

; (x -> Don't Care, can be 0 or 1)

Opcode

Bits(2)

1

1

1

A5

A4

A1

A0

Busy

Ready