{"id":7528,"date":"2016-09-10T20:15:09","date_gmt":"2016-09-10T18:15:09","guid":{"rendered":"https:\/\/www.chiprebel.com\/?p=7528"},"modified":"2022-11-18T15:33:15","modified_gmt":"2022-11-18T14:33:15","slug":"apple-a4","status":"publish","type":"post","link":"https:\/\/www.chiprebel.com\/apple-a4\/","title":{"rendered":"Apple’s first own in-house chipset A4 revealed"},"content":{"rendered":"

Apple’s first in-house System on chip SoC combines an\u00a0ARM Cortex A8 CPU and PowerVR SGX GPU. It has been used in the first iPad and iPhone 4 and later on was substituted by the next generations A5, A6, etc. The ARM cpu has a maximum clock speed of 1GHz but besides that it has the 200MHz PowerVR SGX535 GPU onboard to do much of the graphical work. Go to the download floorplan and die utilization report section right away<\/a><\/p>\n

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Apple’s A4 frontside optical view<\/p><\/div>\n

As frontside view is completely covered by the metal lines (Back-End-Of-Line, BEOL) \u00a0we have removed all the bulk silicon of the die to get a clear backside view on the gate oxide and STI (silicon trench isolation). Below are some Optical Microscopy as well as SEM (Scanning Electron Microscopy) images shown.<\/p>\n

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Apple’s A4 chip backside overview<\/p><\/div>\n