T25S16AFEPR datasheet(54/74 Pages) HMSEMI

54 / 74 page

with “Wrap Around” feature. The Wrap Length set by W6-5 in Standard SPI mode is still valid in QPI mode and

can also be re-configured by “Set Read Parameters (C0h)” instruction. Refer to 7.5.12 and 7.5.13 for details.

Figure 7.25 Set Burst with Wrap Instruction

7.4 Reset Commands

Software controlled Reset commands restore the device to its initial power up state, by reloading volatile

registers from non-volatile default values. If a software reset is initiated during a Erase, Program or Writing

needs to be initiated again. Once the Reset instruction is accepted, any on-going internal operations will be

terminated and the device will return to its default power-on state and lose all the current volatile settings,

such as Volatile Status Register bits, Write Enable Latch (WEL) status, Program/Erase Suspend status, Read

parameter setting (P7-P0), Continuous Read Mode bit setting (M7-M0) and Wrap Bit setting (W6-W4).

When the device is in Deep Power-Down mode, the software reset command is ignored and has no

effect. To reset the device send the Release Power down command (ABh) and after time duration of tRES1 the

device will resume normal operation and the software reset command will be accepted.

A software reset is initiated by the Software Reset Enable command (66h) followed by Software Reset

command (99h) and then executed when CS# is brought high after tRCH time at the end of the Software Reset

instruction and requires tRST time before executing the next Instruction after the Software Reset. See Figure

8.7, Software Reset Input Timing. Note that CS# must be brought high after tRCH time, or the Software Reset

will not be executed.

Figure 7.26 Software Reset Instruction(SPI and QPI Mode)

7.4.1 Software Reset Enable (66h)

The Reset Enable (66h) command is required immediately before a software reset command (99h) such

that a software reset is a sequence of the two commands. Any command other than Reset (99h) following the

Reset Enable (66h) command, will clear the reset enable condition and prevent a later Reset (99h) command

from being recognized.

HM25Q128A

T25S16AFEPR bảng dữ liệu(PDF) 54 Page - Shenzhen Huazhimei Semiconductor Co., Ltd