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66-pin DDR Chip Converter
DDR chips are extremely delicate and can break easily. You must use a vacuum
pick up device for proper handling. If your shop does not have a
professional electrical vacuum pick up machines, you may use a low-cost
pen-like pick up device like the following Pen Vac Tweezer:
Such tweezers are commercially available from many electronic tool distributors.
Once you have inserted the chip(s) in the test sockets, insert the converter itself into the DDR adapter's 184-pin test socket as if it was a regular DDR module. Please make sure that pin-1 of the converter faces left so that the installed chips are facing you. Like testing regular DIMMs, you do not need to turn RAMCHECK off prior to the insertion of the converter. Press F1 to start the test, which generally follows the regular DDR test flow as outlined in the DDR Pro manual. RAMCHECK automatically detects the DDR CHIP converter as evident by the following DDR CHIP prompt:
The DDR chip converter has two ZIF sockets, marked U1 (left socket) and U2 (right socket). You can test either one chip or two. If you test one chip only, you must use U1. When testing two chips, both must be of the same size. The following screens shows what you get if the two chips do not have same size:
Followed by a more explicit explanation as in these examples:
Basic Test for the DDR chips is similar to the test for DDR modules. The following two screens show testing of two 32Mx16 chips on the left and only one 32Mx16 chip on the right. The test animation uses "CHIPS: C1 X X C2" indication with two animation characters while testing two chips. The test for one chip uses "CHIPS: C1 X C1" indication with one animation character.
In the following example, two 128Mx4 are tested at 333MHz. You can override the default 333MHz to higher or lower frequency using the change-on-the-fly or setup features similar to the DDR modules setup.
The next example shows testing of two 64Mx8 DDR chips:
Here test speed was overrided to 400MHz by the user.
The following screen shows the first summary screen following a successful Basic Test with the DDR CHIP Converter:
In this example, two chips were tested simultaneously. Other screen follows with additional test results similar to the DDR PRO module tests.
The RAMCHECK Test Log allows you to review all the test results in one continuous scrolling display. You can view the test even after the test ends (but before you start a new test) by pressing F3 from Standby and selecting Test Log with F1. The Test Log is one of RAMCHECK's most powerful features. When used with the PC Communications program, the test log can be printed and saved into convenient log files.
The following screen shows you in particular how the DDR chip size is reported in the Test Log.
The first line of the size shows the standard notation for the total chip size, which is 64Mx8. It is also equal to 64MB. In the last line, the chip size is shown in the Banks x Size x Bit Width format. In the example, each chip has 4 banks, 16Mx8 each. Other information in the test log is described in the DDR PRO manual.
The DDR CHIP converter EXTENSIVE and AUTO LOOP tests are similar to our regular DDR and SDRAM tests.
Required RAMCHECK Firmware Version: 2.26E or later.
INNOVENTIONS, Inc., reserves the right to change products or specifications without prior notice.
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