GD25S512MDBJS datasheet(11/87 Pages) GIGADEVICE

11 / 87 page

3.3V Uniform Sector

Dual and Quad Serial Flash

GD25S512MD

4.2.

SPI Mode

Standard SPI

The GD25S512MD features a serial peripheral interface on 4 signals buses: Serial Clock (SCLK), Chip Select (CS#),

Serial Data Input (SI) and Serial Data Output (SO). Both SPI bus mode 0 and 3 are supported. Input data is latched on the

rising edge of SCLK and data shifts out on the falling edge of SCLK.

Dual SPI

The GD25S512MD

supports Dual SPI operation when using the “Dual Output Fast Read”, “Dual Output Fast Read

with 4-

Byte address”, “Dual I/O Fast Read” and “Dual I/O Fast Read with 4-Byte address” commands (3BH 3CH BBH and

BCH). These commands allow data to be transferred to or from the device at twice the rate of the standard SPI. When using

the Dual SPI command the SI and SO pins become bidirectional I/O pins: IO0 and IO1.

Quad SPI

The GD25S512MD supports Quad SPI operati

on when using the “Quad Output Fast Read”, “Quad Output Fast Read

with 4-

Byte address”, “Quad I/O Fast Read”, “Quad I/O Fast Read with 4-Byte address” (6BH, 6CH, EBH and ECH)

commands. These commands allow data to be transferred to or from the device at four times the rate of the standard SPI.

When using the Quad SPI command the SI and SO pins become bidirectional I/O pins: IO0 and IO1, in addition to IO2 and

IO3 pins. For GD25S512MD, QE bit is set to 1 as default and cannot be changed.

GD25S512MDBJS 데이터시트(PDF) 11 Page - GigaDevice Semiconductor (Beijing) Inc.