GD25Q128CxIGx 3.3V Uniform Sector Dual and Quad Serial Flash
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2. GENERAL DESCRIPTION
The GD25Q128C(128M-bit) Serial flash supports the standard Serial Peripheral Interface (SPI), and supports
the Dual/Quad SPI: Serial Clock, Chip Select, Serial Data I/O0 (SI), I/O1 (SO), I/O2 (WP#) and I/O3 (HOLD#/
RESET#). The Dual I/O data is transferred with speed of 208Mbits/s and the Quad I/O & Quad Output data is
transferred with speed of 320Mbits/s.
Connection Diagram
CS#
SO
1
2
3
4
8
7
6
5
VCC
CS#
SO
1
2
8
7
VCC
HOLD#/
RESET#
HOLD#/
RESET#
Top View
Top View
WP#
VSS
SCLK
SI
WP# 3
6 SCLK
VSS
4
5
SI
8-LEAD SOP
8-LEAD WSON
Pin Description
Pin Name
I / O
Description
CS#
SO (IO1)
WP# (IO2)
VSS
I
Chip Select Input
I/O
I/O
Data Output (Data Input Output 1)
Write Protect Input (Data Input Output 2)
Ground
SI (IO0)
I/O
I
Data Input (Data Input Output 0)
Serial Clock Input
SCLK
HOLD#/RESET (IO3)
VCC
I/O
Hold or Reset Input (Data Input Output 3)
Power Supply
Block Diagram
Write Control
WP#(IO2)
Logic
Status
Register
Flash
HOLD#
RESET#(IO3)
High Voltage
Memory
Generators
SPI
Command &
Control Logic
SCLK
Page Address
Latch/Counter
CS#
Column Decode And
256-Byte Page Buffer
SI(IO0)
SO(IO1)
Byte Address
Latch/Counter
Rev.1.2
69 - 5
ELM [ ELM ELECTRONICS ]
