The Apple A4 is a microprocessor designed by Apple and manufactured by Samsung and first used in the iPad tablet computer, then in the iPhone 4 smartphone. It was also used in the iPod Touch (4th generation).
|Designed by||Apple Inc.|
|Max. CPU clock rate||1 GHz (iPad)|
|Instruction set||ARM v7|
|Number of cores||1|
|L1 cache||64 KB|
|L2 cache||640 KB|
Apple announced the A4 on January 27, 2010, during their "Latest Creation" event.
On June 7, 2010, Steve Jobs publicly confirmed that the iPhone 4 would contain the A4 Processor, although it was not yet known if it had the same frequency, bus width, or caches as the A4 in the iPad.
- Clark, Don (2010-04-05). "Apple iPad Taps Familiar Component Suppliers - WSJ.com". Online.wsj.com. Retrieved 2010-04-15.
- Apple (2010-01-27). "Apple Launches iPad". Press release. https://www.apple.com/pr/library/2010/01/27ipad.html. Retrieved 2010-01-28.
- "iPhone 4 design". Apple. 2010-07-06.
- MacWorld – Apple inside: the significance of the iPad's A4 chip
- CNET – Inside the iPad: Apple's new 'A4' chip
- HotHardware – iPad's Identity Crisis and Apple's A4 CPU Showstopper
- EETimes - Apple's A4 dissected
- Understanding iPad’s A4 Processor
- ARM Cortex-A series processors
- PowerVR GPU specifications pages