MR2A16A Data Sheet, Rev. 4

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Freescale Semiconductor

Timing Specifications

Write Mode

Parameter

Symbol

Min

Max

Unit

35

—

ns

Address set-up time

0—

ns

Address valid to end of write (G high)

18

—

ns

Address valid to end of write (G low)

20

—

ns

Write pulse width (G high)

15

—

ns

Write pulse width (G low)

15

—

ns

Data valid to end of write

10

—

ns

Data hold time

0—

ns

012

ns

3—

ns

Write recovery time

12

—

ns

NOTES:

1

A write occurs during the overlap of E low and W low.

2

Due to product sensitivities to noise, power supplies must be properly grounded and decoupled and

bus contention conditions must be minimized or eliminated during read and write cycles.

3

If G goes low at the same time or after W goes low, the output will remain in a high-impedance state.

4

After W, E, or UB/LB has been brought high, the signal must remain in steady-state high for a minimum

of 2 ns.

5

The minimum time between E being asserted low in one cycle to E being asserted low in a subsequent

cycle is the same as the minimum cycle time allowed for the device.

6

All write cycle timings are referenced from the last valid address to the first transition address.

7

This parameter is sampled and not 100% tested.

8

Transition is measured

±200 mV from steady-state voltage.

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