IC61C6416 Datasheet, PDF(30/80 Page) Integrated Circuit Solution Inc – 64K X 16 HIGH-SPEED CMOS STATIC RAM

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IC61C6416 Datasheet, PDF (30/80 Pages) Integrated Circuit Solution Inc – 64K X 16 HIGH-SPEED CMOS STATIC RAM

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HYB18T256324Fâ[16/20/22]

256-Mbit DDR SGRAM

Functional Description

3.4.5 Low Power

When the Low Power extended mode register is set, the device enters a low power mode of operation. This mode

is not enabled for the HYB18T256324Fâ[16/20/22]. Setting this bit to HIGH will have no effect on the behavior of

the GDDR3 DRAM.

3.4.6 Vendor Code and Revision Identification

The Manufacturer Vendor Code is selected by issuing an Extended Mode Register Set command with bit A10 set

to 1 and bits A0-A9 and A11 set to the desired value. When the Vendor Code function is enabled the GDDR3

DRAM will provide the Infineon vendor code on DQ[3:0] and the revision identification on DQ[7:4]. The code will

be driven onto the DQ bus after tRIDon following the EMRS command that sets A10 to 1. The Vendor Code and

Revision ID will be driven on DQ[7:0] until a new EMRS command is issued with A10 set back to 0. After tRDoff

following the second EMRS command, the data bus is driven back to HIGH. This second EMRS command must

be issued before initiating any subsequent operation. Violating this requirement will result in unspecified operation.

Table 17 Revision ID and Vendor Code

Revision Identification

DQ[7:4]

0001

Infineon Vendor Code

DQ[3:0]

0010

Note: Please refer to Revision Release Note for Revision ID value

#, +

#,+

#O M %-2 3

.$

.$

.$

.$

.$

%-23

.$

.$

.$

.$

!;=

!

!DD

!

2$ 1 3

T2)$O N

!DD

T2)$ O FF

$1 ; =

6E NDOR# OD EA N D2 E VIS ION )$

Figure 13

Timing of Vendor Code and Revision ID generation on DQ[7:0]

%- 23 % X TE NDE D - OD E2 E GIS TER3 E T#O M MAN D

!D D!D D RE S S

.$ ./ 0OR$ E SELEC T

$O N gT#A RE

Table 18 Vendor Code and Revision ID Timing Parameters for â1.6, â2.0 and â2.2 speed sorts

Parameter

Symbol

Limit Values

Unit Notes

â1.6

â2.0

â2.2

min max min max min max

EMRS to DQ on time

EMRS to DQ off time

tRIDon

â

20 â

20

â

20

ns

tRIDoff

â

20 â

20

â

20

ns

Data Sheet

30

Rev. 1.11, 04-2005

10292004-DOXT-FS0U

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