26HS01GTAM03 datasheet(48/166 Pages) INFINEON

48 / 166 page

Datasheet

48 of 166

002-12337 Rev. *Y

2022-01-18

256Mb/512Mb/1Gb SEMPER™ Flash

HYPERBUS™ interface, 1.8V/3.0V

Features

4.6.1.1

Host polling behavior

The host will need to go through a Status Register polling sequence to determine if an initialization failure has

occurred in the device. The flowchart for the sequence is shown in Figure 32.

Figure 32

Host polling sequence for microcontroller initialization failure detection

4.6.1.2

Microcontroller initialization failure detection related registers and

transactions

Table 35

Microcontroller initialization failure related registers and transactions

Related registers

(see Section 5.3 Legacy (x1) SPI registers

on page 106)

Related SPI transactions

(see Table 122 on page 137)

Related HYPERBUS™ transactions

(see Table 120 on page 124)

Status Register 1 Volatile (STR1V)

Read Any Register (RDARG_4_0)

N/A

Read Status Register -1 (RDSR1_0_0)

Power-Up

Read Status Register 1 (x1)

Read Status Register (x8)

Status Register 1

= 0x00? (x1)

OR = 0xFE80? (x8)

Any Read Identification Transaction =

Successful

Device

Ready

Yes

Change Host Interface to SDR SPI

(1S-1S-1S)

Read Status Register 1

Hardware Reset

Flash Microcontroller

Initialization Failure

Detected

Status Register 1 = 0x61

Power-Up

Read Status Register 1 (x1)

Read Status Register (x8)

Status Register 1

= 0x00? (x1)

OR = 0xFE80? (x8)

Any Read Identification Transaction =

Successful

Device

Ready

Yes

Change Host Interface to SDR SPI

(1S-1S-1S)

Read Status Register 1

Hardware Reset

Flash Microcontroller

Initialization Failure

Detected

Status Register 1 = 0x61

[19]

Note

19. If you have Vcc within specifications and a hardware reset does not resolve the issue, replace the flash device.

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