26HS01GTAM03 datasheet(16/166 Pages) INFINEON

16 / 166 page

Datasheet

16 of 166

002-12337 Rev. *Y

2022-01-18

256Mb/512Mb/1Gb SEMPER™ Flash

HYPERBUS™ interface, 1.8V/3.0V

Interface overview

Figure 13

SPI transaction with output data sequence (AutoBoot)

2.4

Embedded operations

2.4.1

Embedded algorithm controller (EAC)

The EAC takes transactions from the host system for programming and erasing the flash memory arrays and

performs all the complex operations needed to change the nonvolatile memory state. This frees the host system

from any need to manage the program and erase processes.

There are five EAC operation categories:

• Deep power down (DPD)

• Standby (Read mode)

• Address space switching

• Embedded algorithms (EA)

• Advanced sector protection (ASP) management

2.4.1.1

Deep power down (DPD)

In the DPD mode, current consumption is driven to the lowest level. The DPD mode must be entered while the

device is in the Standby state while not in an ASO.

Note that the device maintains its configuration during DPD. In other words, the device exits DPD in the same

state as it went in. However, ECC related registers (ECC status, error detection counter, and address trap) will not

maintain their state and will get reset upon DPD exit.

Note that a configuration option exists where the device can power-up in DPD. If selected, CS# must be held High

during POR to enter DPD.

2.4.1.2

Standby

In the Standby State current consumption is greatly reduced. The EAC enters its Standby State when no

command is being processed and no EA is in progress. If the device is deselected (CS# = High) during an EA, the

device still draws active current until the operation is completed (ICC4).

2.4.1.3

Address space switching - HYPERBUS™ only

Writing specific address and data sequences (transactions) switch the memory device address space from the

flash memory array to one of the address space overlays (ASO).

Embedded algorithms operate on the information visible in the currently active (entered) ASO. The system

continues to have access to the ASO until the system issues an ASO Exit command, performs a Hardware Reset,

or until power is removed from the device. An ASO Exit Command switches from an ASO back to the flash Memory

Array address space. The transaction accepted when a particular ASO is entered are listed between the ASO Enter

and Exit transactions in the transaction table. See Transaction table on page 124 for address and data require-

ments for all transaction sequences.

Note that while in any mode, the Status Register read transaction may be issued to cause the Status Register ASO

to appear at every word address in the device address space.

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