30.3.7 Power Management

The Flash system supports multiple power mode for reducing or managing power. These include Auto-Standby, Flash power down, and controlling power during sleep.

Flash Auto Standby

The Flash panel enters a standby mode automatically after a read or write operation. Each Flash panel enters its Auto-Standby independently of the other. After a read request completes as defined by the read access time (T_ACC), the panel enters Auto-Standby. For writes/erases this after the recovery time. When a panel is in this mode read and write requests incur no access time penalty.

Sleep Interaction

The Flash system holds off entry into sleep modes lower than Idle Sleep to cleanly stop Flash operations. The following operations delay entry into sleep:

In-progress read from any source (system, CRC, etc)
Requested program or erase operation, etc.

Note: Row programming and erase operations can significantly delay entry into a sleep mode.