S25FL128SDPMFIG11 Spansion, S25FL128SDPMFIG11 Datasheet - Page 21

• Manufacturer Part Number: S25FL128SDPMFIG11
• Description: Flash 128Mb 3V 66MHz Serial NOR Flash
• Manufacturer: Spansion

Specifications of S25FL128SDPMFIG11

• Rohs: yes
• Data Bus Width: 1 bit
• Memory Type: Flash
• Memory Size: 128 Mbit
• Architecture: Uniform
• Timing Type: Asynchronous
• Interface Type: SPI
• Supply Voltage - Max: 3.6 V
• Supply Voltage - Min: 2.7 V
• Maximum Operating Current: 100 mA
• Operating Temperature: - 40 C to + 85 C
• Mounting Style: SMD/SMT
• Package / Case: SO-16

4.
4.1
July 12, 2012 S25FL128S_256S_00_05
4.1.1
4.1.2
Signal Protocols
SPI Clock Modes
Single Data Rate (SDR)
Double Data Rate (DDR)
The S25FL128S and S25FL256S devices can be driven by an embedded microcontroller (bus master) in
either of the two following clocking modes.
 Mode 0 with Clock Polarity (CPOL) = 0 and, Clock Phase (CPHA) = 0
 Mode 3 with CPOL = 1 and, CPHA = 1
For these two modes, input data into the device is always latched in on the rising edge of the SCK signal and
the output data is always available from the falling edge of the SCK clock signal.
The difference between the two modes is the clock polarity when the bus master is in standby mode and not
transferring any data.
 SCK will stay at logic low state with CPOL = 0, CPHA = 0
 SCK will stay at logic high state with CPOL = 1, CPHA = 1
Timing diagrams throughout the remainder of the document are generally shown as both mode 0 and 3 by
showing SCK as both high and low at the fall of CS#. In some cases a timing diagram may show only mode 0
with SCK low at the fall of CS#. In such a case, mode 3 timing simply means clock is high at the fall of CS# so
no SCK rising edge set up or hold time to the falling edge of CS# is needed for mode 3.
SCK cycles are measured (counted) from one falling edge of SCK to the next falling edge of SCK. In mode 0
the beginning of the first SCK cycle in a command is measured from the falling edge of CS# to the first falling
edge of SCK because SCK is already low at the beginning of a command.
Mode 0 and Mode 3 are also supported for DDR commands. In DDR commands, the instruction bits are
always latched on the rising edge of clock, the same as in SDR commands. However, the address and input
data that follow the instruction are latched on both the rising and falling edges of SCK. The first address bit is
latched on the first rising edge of SCK following the falling edge at the end of the last instruction bit. The first
bit of output data is driven on the falling edge at the end of the last access latency (dummy) cycle.
SCK cycles are measured (counted) in the same way as in SDR commands, from one falling edge of SCK to
the next falling edge of SCK. In mode 0 the beginning of the first SCK cycle in a command is measured from
the falling edge of CS# to the first falling edge of SCK because SCK is already low at the beginning of a
command.
POL=0_CPHA=0_SCLK
POL=1_CPHA=1_SCLK
CS#
SO
SI
D a t a
S25FL128S and S25FL256S
Figure 4.1 SPI SDR Modes Supported
S h e e t
MSB
MSB
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