IB Tester Errata

• Module Name: IB Tester
• Module Number: ELE_S58E_101
• Change From: Rev. C0 Change To: Rev. C1
• Change Request:ECO-070
• Impacted Module # Rev. C0
• Requested by:MA Date: Apr. 16, 2014

Problem Description

AT89C55WD-33JC or PN=000317 installed at U6 is obsolete. The 24MHz version is still available. But the Crystal on board is 32MHz and has to be changed to 24MHz to work with the 24MHz flavour of the AT89C55.

It turns out that we have purchased and stored 24MHz parts (AT89C55WD-24JU) under PN=000317 since 2009 (PO10694, PO10029). Therefore, our 2009 build was assembled by a mix of 24MHz/32MHz parts and 32MHz CPUs. Affected parts are: TIT-028 to TIT-037 (3 parts) and TIT-038 to TIT-042).

Change Description

• Replace X1 with 002813 (24MHz oscillator)
• Relabel the card as Rev. C1