# Microchip, memory measured in IEC?

It doesn't say on the data-sheet, but I'm curious where i can find if Microchip uses IEC or SI as standard for there memory sizes.

For example:

The Microchip Technology Inc. 24AA512/24LC512/ 24FC512 (24XX512*) is a 64K x 8 (512 Kbit) Serial Electrically Erasable PROM, capable of operation across a broad voltage range (1.7V to 5.5V)….

My question is:

By IEC (binary) its

(512*1024)/8 = 65.536 bytes


but according to SI its

(512*1000)/8 = 64.000 bytes


Anyone?

• Think about how addressing has to work inside these memories. It's going to be a power of 2. Therefore "64K x 8" means 65536 bytes of 8 bits each. – Olin Lathrop Dec 16 '13 at 17:13