26HS01GTAM03 datasheet(22/166 Pages) INFINEON

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Datasheet

22 of 166

002-12337 Rev. *Y

2022-01-18

256Mb/512Mb/1Gb SEMPER™ Flash

HYPERBUS™ interface, 1.8V/3.0V

Address space maps

There are multiple address map modes that determine what appears in the flash device address space at any

given time:

• Read mode

•Status register (SR) mode

•ASO mode

• Peripheral register mode

In Read mode, the entire Flash Memory Array may be directly read by the host system memory controller. The

memory device EAC, puts the device in Read mode during Power-On or after a Hardware Reset or after an EA is

suspended. Read accesses and commands are accepted in Read mode. A subset of commands is accepted in

Read mode when an EA is suspended.

While in any mode, the Status Register read command may be issued to cause the Status Register ASO to appear

at every word address in the device address space. In this Status Register ASO mode, the device interface waits

for a read access and, any write access is ignored. The next read access to the device accesses the content of the

Status Register, exits the Status Register ASO, and returns to the previous (calling) mode in which the Status

Similarly, commands that read and write other registers use Peripheral Register mode, in which the register

appears in a temporary ASO that is automatically exited after the read or write of the command selected register.

The read or write occurs in the last cycle of the register access command sequence.

In EA mode, the EAC is performing an Embedded Algorithm, such as programming or erasing a nonvolatile

memory array. While in EA mode, none of the Flash Memory Array is readable. While in EA mode, only the Program

/ Erase Suspend command or the Status Register Read command will be accepted. All other commands are

ignored. Thus, no other ASO may be entered from the EA mode.

In ASO mode, one of the remaining overlay address spaces is entered (overlaid on the Flash Memory Array address

map). Only one ASO may be entered at any one time. Commands to the device affect the currently entered ASO.

Only certain commands are valid for each ASO. These are listed in each ASO related section of Table 120.

The following ASOs have nonvolatile data that may be programmed to change 1s to 0s:

•SSR

• ASP Configuration Register (ASPR)

• Persistent Protection Bits (PPB)

•Password

• AutoBoot

•Infineon Endurance Flex architecture’s Data Pointers

• Only the PPB and AutoBoot ASOs have nonvolatile data that may be erased to change 0s to 1s.

When a program or erase command is issued while one of the nonvolatile ASOs is entered, the EA operates on the

ASO. The ASO is not readable while the EA is active. When the EA is completed the ASO remains entered and is

again readable. Suspend and Resume commands are ignored during an EA operating on any of these ASOs.

The Peripheral Register mode is used to manage the POR Timer, Interrupt Configuration Register, Interrupt

Status Register, Volatile Configuration Register, and the Nonvolatile Configuration Register.

26HS01GTAM03 Datasheet(PDF) 22 Page - Infineon Technologies AG

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