ACE25QC160GLDPTH datasheet(40/73 Pages) ACE

40 / 73 page

ACE25QC160G

16M BIT SPI NOR FLASH

VER 1.2

Read JEDEC ID (9FH)

The JEDEC ID instruction allows the 8-bit manufacturer identification to be read, followed by two bytes of

device identification. The device identification indicates the memory type in the first byte, and the memory

capacity of the device in the second byte. JEDEC ID instruction while an Erase or Program cycle is in

progress, is not decoded, and has no effect on the cycle that is in progress. The JEDEC ID instruction

should not be issued while the device is in Deep Power-Down Mode.

See Figure 23.a (SPI mode) & Figure 23.b (QPI mode), the device is first selected by driving /CS to low.

Then, the 8-bit instruction code for the instruction is shifted in. This is followed by the 24-bit device

identification, stored in the memory, being shifted out on Serial Data Output, each bit being shifted out

during the falling edge of Serial Clock. The JEDEC ID instruction is terminated by driving /CS to high at any

time during data output. When /CS is driven high, the device is put in the Standby Mode. Once in the

Standby Mode, the device waits to be selected, so that it can receive, decode and execute instructions.

Figure23 a. JEDEC ID Sequence Diagram (SPI Mode only)

ACE25QC160GLDPTH Datasheet(PDF) 40 Page - ACE Technology Co., LTD.