GD25B256D datasheet(9/82 Pages) GIGADEVICE

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GD25B256D Datasheet(PDF) 9 Page - GigaDevice Semiconductor (Beijing) Inc.

Part #	GD25B256D

Description	3.3V Uniform Sector Dual and Quad Serial Flash

Download	82 Pages

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Manufacturer	GIGADEVICE [GigaDevice Semiconductor (Beijing) Inc.]

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

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9 / 82 page

3.3V Uniform Sector

Dual and Quad Serial Flash

GD25B256D

DEVICE OPERATION

SPI Mode

Standard SPI

The GD25B256D features a serial peripheral interface on 4 signals bus: 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 GD25B256D 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 GD25B256D supports Quad SPI operation 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 GD25B256D, QE bit is set to 1 as default and cannot be changed.

Manufacturer	Part #	Datasheet	Description
GigaDevice Semiconducto...	GD25B256D	4Mb / 28P	MCU

Manufacturer	Part #	Datasheet	Description
GigaDevice Semiconducto...	GD25Q80C	1Mb / 67P	3.3V Uniform Sector Dual and Quad Serial Flash
	GD25Q64C	1Mb / 74P	3.3V Uniform Sector Dual and Quad Serial Flash
	GD25Q127C	1Mb / 79P	3.3V Uniform Sector Dual and Quad Serial Flash
	GD25B257D	1Mb / 92P	3.3V Uniform Sector Dual and Quad Serial Flash
ELM Electronics	GD25Q128CXIGX	2Mb / 69P	3.3V Uniform Sector Dual and Quad Serial Flash
	GD25Q32CXIGX	3Mb / 50P	3.3V Uniform Sector Dual and Quad Serial Flash
	GD25Q16	3Mb / 49P	3.3V Uniform Sector Dual and Quad Serial Flash
GigaDevice Semiconducto...	GD25R256D	1Mb / 82P	3.3V Uniform Sector Dual and Quad Serial Flash
GigaDevice Semiconducto...	GD25B64C	1Mb / 57P	3.3V Uniform Sector Dual and Quad Serial Flash
ELM Electronics	GD25Q32	3Mb / 50P	3.3V Uniform Sector Dual and Quad Serial Flash

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