Dosilicon Confidential
PN: DS35X4GMXXX
1.2 Pin description
Pin Name
CS#
Description
Chip select
Places the device in active power mode when driven LOW. Deselects the device and places
SO at High-Z when HIGH
Serial clock
SCLK
Provides serial interface timing. Latches commands, addresses, and data on SI on the rising
edge of SCLK. Triggers output on SO after the falling edge of SCLK.
Serial data input
Transfers data serially into the device. Device latches commands, addresses, and program
data on SI on the rising edge of SCLK. SI must not be driven by the host during x2 or x4 read
operations.
SI/SIO0
Serial data output
Transfers data serially out of the device on the falling edge of SCLK.
SO/SIO1
WP#/SIO2
Write protect
When LOW, prevents overwriting block-lock bits if the block register write disable (BRWD) bit
is set.
WP# must not be driven by the host during x4 read operations.
Hold
Pauses any serial communication with the device without deselecting it. When driven LOW,
SO is at High-Z, and all inputs at SI and SCLK are ignored. Requires that CS# also be driven
LOW.
HOLD#/SIO3
VCC
HOLD# must not be driven by the host during x4 read operations.
Supply Voltage
The VCC supplies the power for all the operations (Read, Write, Erase).
VSS
Ground
NC / DNU
No Connection / Don’t Use
Table 1.2 Pin Description
Rev.08 (Dec. 15. 2023) 10