V437432E24VXTG-75PC datasheet(10/13 Pages) MOSEL

Part #	V437432E24VXTG-75PC

Description	3.3 VOLT 32M x 72 HIGH PERFORMANCE REGISTERED SDRAM ECC MODULE

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Manufacturer	MOSEL [Mosel Vitelic, Corp]

Direct Link	http://www.moselvitelic.com

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V437432E24V Rev. 1.0 January 2002

MOSEL VITELIC

V437432E24V

Notes:

1.

The specified values are valid when addresses are changed no more than once during tCK(min.) and when No

Operation commands are registered on every rising clock edge during tRC(min). Values are shown per module

bank.

2.

The specified values are valid when data inputs (DQ’s) are stable during tRC(min.).

3.

All AC characteristics are shown for device level.

An initial pause of 100

µs is required after power-up, then a Precharge All Banks command must be given followed

by 8 Auto Refresh (CBR) cycles before the Mode Register Set Operation can begin.

4.

AC timing tests have VIL =0.4V and VIH = 2.4V with the timing referenced to the 1.4V crossover point. The transition

time is measured between VIH and VIL. All AC measurements assume tT = 1 ns with the AC output load circuit

shown. Specific tac and toh parameters are measured with a 50 pF only, without any resistive termination and with

a input signal of 1V / ns edge rate between 0.8V and 2.0V.

5.

If clock rising time is longer than 1 ns, a time (tT/2 -0.5) ns has to be added to this parameter.

6.

Rated at 1.5V

7.

If tT is longer than 1 ns, a time (tT -1) ns has to be added to this parameter.

8.

Any time that the refresh Period has been exceeded, a minimum of two Auto (CBR) Refresh commands must be

given to “wake-up” the device.

9.

Self Refresh Exit is a synchronous operation and begins on the 2nd positive clock edge after CKE returns high.

Self Refresh Exit is not complete until a time period equal to tRC is satisfied once the Self Refresh Exit command

is registered.

10.

Referenced to the time which the output achieves the open circuit condition, not to output voltage levels.

11.

tDAL is equivalent to tDPL +tRP.

1.4V

tSETUP

tHOLD

tAC

tLZ

tOH

tHZ

CLOCK

INPUT

OUTPUT

50 pF

I/O

Z=50 Ohm

+1.4 V

50 Ohm

2.4V

0.4V

tT

tCL

tCH

I/O

Measurement conditions for

tac and toh

50 pF

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