S25FL016K0XMFI041 Spansion Inc., S25FL016K0XMFI041 Datasheet - Page 36

• Manufacturer Part Number: S25FL016K0XMFI041
• Description: MEMORY, FLASH, 16M, 3V, SPI, 8SOIC
• Manufacturer: Spansion Inc.

Specifications of S25FL016K0XMFI041

• Memory Size: 16Mbit
• Clock Frequency: 104MHz
• Supply Voltage Range: 2.7V To 3.6V
• Memory Case Style: SO
• No. Of Pins: 8
• Operating Temperature Range: -40°C To +85°C
• Interface: SPI
• Memory Type: RoHS Compliant
• Memory Configuration: 8K X 256 Bytes
• Interface Type: SPI
• Rohs Compliant: Yes

7.15
7.16
36
Continuous Read Mode Bits (M7-0)
Continuous Read Mode Reset (FFh or FFFFh)
The “Continuous Read Mode” bits are used in conjunction with “Fast Read Dual I/O”, “Fast Read Quad I/O”,
“Word Read Quad I/O” and “Octal Word Read Quad I/O” instructions to provide the highest random Flash
memory access rate with minimum SPI instruction overhead, thus allow true XIP (execute in place) to be
performed on serial flash devices.
M7-0 need to be set by the Dual/Quad I/O Read instructions. M5-4 are used to control whether the 8-bit SPI
instruction code (BBh, EBh, E7h or E3h) is needed or not for the next command. When M5-4 = (1,0), the next
command will be treated same as the current Dual/Quad I/O Read command without needing the 8-bit
instruction code; when M5-4 do not equal to (1,0), the device returns to normal SPI mode, all commands can
be accepted. M7-6 and M3-0 are reserved bits for future use, either 0 or 1 values can be used.
Continuous Read Mode Reset instruction can be used to set M4 = 1, thus the device will release the
Continuous Read Mode and return to normal SPI operation, as shown in
Reset for Fast Read Dual/Quad I/O on page
Since S25FL016K does not have a hardware Reset pin, so if the controller resets while S25FL016K is set to
Continuous Mode Read, the S25FL016K will not recognize any initial standard SPI instructions from the
controller. To address this possibility, it is recommended to issue a Continuous Read Mode Reset instruction
as the first instruction after a system Reset. Doing so will release the device from the Continuous Read Mode
and allow Standard SPI instructions to be recognized.
To reset “Continuous Read Mode” during Quad I/O operation, only eight clocks are needed. The instruction is
“FFh”. To reset “Continuous Read Mode” during Dual I/O operation, sixteen clocks are needed to shift in
instruction “FFFFh”.
CS#
CLK
IO3
IO1
IO2
IO0
Mode 3
Mode 0
Figure 7.19 Continuous Read Mode Reset for Fast Read Dual/Quad I/O
0
1
Mode Bit Reset
for Quad I/O
D a t a
2
FFh
3
S25FL016K
4
S h e e t
36.
5
6
Don’t Care
Don’t Care
Don’t Care
7
( P r e l i m i n a r y )
8
9
10
11
Mode Bit Reset
for Quad I/O
FFh
S25FL016K_00_02 September 8, 2010
Figure 7.19, Continuous Read Mode
12
13
14
15
Mode 3
Mode 0