what is the difference of two sram?

[terry]

nrf24le1 memory map shows that there are two sram block size of 512byte ,the first one is data retentive (address 0-0x0200) ,another one is data non retentive (address 0x0200 --0x0400). i want to know if both of them will lost data if power off.? what is the difference of them? tks.

[Hung Bui]

Hi Terry,

Depend on the sleep mode you set, the data retentive SRAM (0-0x0200) will be retrieved or not. You can have a look at section 11.2 Modes of operation in the nRF24LE1 Product Spec for detailed information.