GD25Q32CxIGx 3.3V Uniform Sector Dual and Quad Serial Flash
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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
CS#
0
1
2
3
4
5
6
7
8
9
29 30 31
SCLK
t HPM
Command
A3H
3 Dummy Bytes
23 22
MSB
SI
2
1
0
SO
High Performance Mode
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
Rev.1.0
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