DS89C430/DS89C440/DS89C450 Ultra-High-Speed Flash Microcontrollers

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AC CHARACTERISTICS (continued)

1-CYCLE

PAGE MODE 1

2-CYCLE

PAGE MODE 1

4-CYCLE

PAGE MODE 1

PAGE MODE 2

NONPAGE MODE

PARAMETER

SYMBOL

MIN

MAX

MIN

MAX

MIN

MAX

MIN

MAX

MIN

MAX

UNITS

Port 0 Address to Valid Data

In (Note 16)

ns

Port 2 Address to Valid Data

In (Note 16)

ns

ALE Low to

RD or WR Low

(Note 16)

ns

Port 0 Address Valid to

RD or

WR Low (Note 16)

ns

Port 2 Address Valid to

RD or

WR Low (Note 16)

ns

Data Out Valid to

WR

Transition (Note 15)

-5

-5

-5

-5

-5

ns

Data Hold After

WR

(Note 15)

- 10

- 10

- 10

- 10

- 10

ns

RD or WR High to ALE High

(Note 15)

ns

Note: Specifications to -40°C are guaranteed by design and are not production tested. AC electrical characteristics assume 50% duty cycle for the oscillator and are not 100% tested, but are

guaranteed by design.