GD25Q32C datasheet(34/50 Pages) ELM

34 / 50 page

Rev.1.0

50 -

http://www.elm-tech.com

GD25Q32CxIGx 3.3V Uniform Sector Dual and Quad Serial Flash

Figure 31. Read Identification ID Sequence Diagram

7.27. High Performance Mode (HPM) (A3H)

The High Performance Mode (HPM) command must be executed prior to Dual or Quad I/O commands when

operating at high frequencies (see fR and fC1 in AC Electrical Characteristics). This command allows pre-

charging of internal charge pumps so the voltages required for accessing the flash memory array are readily

available. The command sequence: CS# goes low → Sending A3H command → Sending 3-dummy byte →

CS# goes high. See Figure32. After the HPM command is executed, the device will maintain a slightly higher

standby current (Icc8) than standard SPI operation. The Release from Power-Down or HPM command (ABH)

can be used to return to standard SPI standby current (Icc1). In addition, Power-Down command (B9H) will

also release the device from HPM mode back to standard SPI standby state.

Figure 32. High Performance Mode Sequence Diagram

Command

0 1 2 3 4 5 6 7

A3H

CS#

SCLK

8 9

29 30 31

MSB

2 1 0

3 Dummy Bytes

23 22

High Performance Mode

HPM

7.28. Program/Erase Suspend (PES) (75H)

The Program/Erase Suspend command “75H”, allows the system to interrupt a page program or sector/

block erase operation and then read data from any other sector or block. The Write Status Register command

(01H/31H/11H) and Erase/Program Security Registers command (44H, 42H) and Erase commands (20H, 52H,

D8H, C7H, 60H) and Page Program command (02H/32H) are not allowed during Program/Erase suspend.

Program/Erase Suspend is valid only during the page program or sector/block erase operation. A maximum of

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