GD25Q64CFJS datasheet(39/74 Pages) GIGADEVICE

Part #	GD25Q64CFJS

Description	3.3V Uniform Sector Dual and Quad Serial Flash

PDF	74 Pages

Scroll/Zoom	100%

Manufacturer	GIGADEVICE [GigaDevice Semiconductor (Beijing) Inc.]

Direct Link	http://www.gigadevice.com/

Logo

39 / 74 page

3.3V Uniform Sector

Dual and Quad Serial Flash

GD25Q64C

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. After the HPM

command is executed, the device will maintain a slightly higher standby current (Icc9) 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

A3H

CS#

SCLK

29 30 31

MSB

3 Dummy Bytes

23 22

High Performance Mode

HPM

GD25Q64CFJS Datasheet(PDF) 39 Page - GigaDevice Semiconductor (Beijing) Inc.