ACE25QC200GLTMTH datasheet(42/64 Pages) ACE

42 / 64 page

ACE25QC200GL

2M BIT SPI NOR FLASH

VER 1.1

Program/Erase Suspend (75h)

The Program/Erase Suspend instruction “75h”, allows the system to interrupt a Page Program or a

Page/Sector/32K/64K Block Erase operation and then read data from any other sector or block. After the

program or erase operation has entered the suspended state, the memory array can be read except for the

page being programmed or the sector or block being erased. And after the erase operation has entered the

suspended state, the memory array can be programed except for the page being erased. Write status

The Program/Erase Suspend instruction sequence is shown in Figure33.

Readable Area of Memory While a Program or Erase Operation is Suspended

Suspended operation

Readable Region Of Memory Array

Page Program

All but the Page being programmed

Dual Page Program

All but the Page being programmed

Quad Page Program

All but the Page being programmed

Page Erase

All but the Page being Erased

Sector Erase(4KB)

All but the 4KB Sector being Erased

Block Erase(32KB)

All but the 32KB Block being Erased

Block Erase(64KB)

All but the 64KB Block being Erased

When the Serial NOR Flash receives the Suspend instruction, there is a latency of tPSL or tESL before the

Write Enable Latch (WEL) bit clears to “0” and the SUS2 or SUS1 sets to “1”, after which the device is

ready to accept one of the commands listed in "Table Acceptable Commands During Program/Erase

Suspend after tPSL/tESL" (e.g. FAST READ). Refer to " AC Characteristics" for tPSL and tESL timings.

"Table Acceptable instructions During Suspend (tPSL/tESL not required)" lists the Instructions for which the

tPSL and tESL latencies do not apply. For example, “05h”, “48h”, “66h” and “99h” can be issued at any time

after the Suspend instruction.

Status Register bit 15 (SUS2) and bit 10 (SUS1) can be read to check the suspend status. The SUS2

(Program Suspend Bit) sets to “1” when a program instruction is suspended. The SUS1 (Erase Suspend Bit)

sets to “1” when an erase operation is suspended. The SUS2 or SUS1 clears to “0” when the program or

erase instruction is resumed.

ACE25QC200GLTMTH Datasheet(PDF) 42 Page - ACE Technology Co., LTD.