MB85RS2MTA

10

DS501-00032-6v1-E



SLEEP

The SLEEP command shifts the LSI to a low power mode called “SLEEP mode”. The transition to the SLEEP

mode is carried out at the rising edge of CS after operation code in the SLEEP command. However, when

at least one SCK clock is inputted before the rising edge of CS after operation code in the SLEEP command,

this SLEEP command is canceled.

After the SLEEP mode transition, SCK and SI inputs are logically ignored and SO changes to a Hi-Z state.

In case all other pins are not fixed to VDD or VSS than CS, a through-current may flow.

Returning to an normal operation from the SLEEP mode is carried out after tREC (Max 400 s) time from the

falling edge of CS (see the figure below). It is possible to return CS to H level before tREC time. However, it

is prohibited to bring down CS to L level again during tREC period.

Enter Sleep Mode

CS

SCK

SI Invalid

Invalid

Hi-Z

Sleep Mode Entry

67

012345

SO

1

1011100

CS

CS

tREC

Exit Sleep Mode

Sleep Mode Exit

From this time

Command input enable