S25FL127S View Datasheet(PDF) - Spansion Inc.
Part Name
Description
Manufacturer
S25FL127S Datasheet PDF : 131 Pages
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Data Sheet (Preliminary)
2.2.2.8
New Features
The FL-S family introduces several new features to SPI category memories:
Extended address for access to higher memory density.
AutoBoot for simpler access to boot code following power up.
Enhanced high performance read commands using mode bits to eliminate the overhead of SIO instructions
when repeating the same type of read command.
Multiple options for initial read latency (number of dummy cycles) for faster initial access time or higher
clock rate read commands.
Advanced Sector Protection for individually controlling the protection of each sector. This is very similar to
the Advanced Sector Protection feature found in several other Spansion parallel interface NOR memory
families.
2.3
Glossary
BCD
Binary Coded Decimal. A Value in which each 4-bit nibble represents a decimal numeral.
Command
All information transferred between the host system and memory during one period while
CS# is low. This includes the instruction (sometimes called an operation code or opcode) and
any required address, mode bits, latency cycles, or data.
Flash
The name for a type of Electrical Erase Programmable Read Only Memory (EEPROM) that
erases large blocks of memory bits in parallel, making the erase operation much faster than
early EEPROM.
High
Instruction
A signal voltage level ≥ VIH or a logic level representing a binary one (1).
The 8-bit code indicating the function to be performed by a command (sometimes called an
operation code or opcode). The instruction is always the first 8 bits transferred from host
system to the memory in any command.
Low
LSB
(Least Significant Bit)
A signal voltage level ≤ VIL or a logic level representing a binary zero (0).
Generally the right most bit, with the lowest order of magnitude value, within a group of bits of
a register or data value.
MSB
(Most Significant Bit)
Generally the left most bit, with the highest order of magnitude value, within a group of bits of
a register or data value.
Non-Volatile
No power is needed to maintain data stored in the memory.
OPN
The alphanumeric string specifying the memory device type, density, package, factory non-
(Ordering Part Number) volatile configuration, etc. used to select the desired device.
Page
512 bytes or 256 bytes aligned and length group of data. The size assigned for a page
depends on the Ordering Part Number.
PCB
Printed Circuit Board
Register Bit References
Are in the format: Register_name[bit_number] or Register_name[bit_range_MSB:
bit_range_LSB]
Sector
Erase unit size; depending on device model and sector location this may be 4 kbytes,
64 kbytes or 256 kbytes.
Write
An operation that changes data within volatile or non-volatile registers bits or non-volatile
flash memory. When changing non-volatile data, an erase and reprogramming of any
unchanged non-volatile data is done, as part of the operation, such that the non-volatile data
is modified by the write operation, in the same way that volatile data is modified – as a single
operation. The non-volatile data appears to the host system to be updated by the single write
command, without the need for separate commands for erase and reprogram of adjacent, but
unaffected data.
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S25FL127S
S25FL127S_00_02 April 25, 2013
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