E
28F160S3, 28F320S3
This family of products are optimized for fast factory
programming and low power designs. Specifically
designed for 3V systems, the 28F160S3 and
28F320S3 support read operations at 2.7V–3.6V
Vcc with block erase and program operations at
1.0 INTRODUCTION
This datasheet contains 16- and 32-Mbit Word-
Wide FlashFileTM memory (28F160S3 and
28F320S3) specifications. Section 1 provides a
flash memory overview. Sections 2, 3, 4, and 5
describe the memory organization and functionality.
2.7V–3.6V and 5V VPP
.
High programming
performance is achieved through highly-optimized
write buffers. A 5V VPP option is available for even
faster factory programming. For a simple low power
design, VCC and VPP can be tied to 2.7V.
Additionally, the dedicated VPP pin gives complete
Section
6 covers electrical specifications for
extended temperature product offerings.
data protection when VPP ≤ VPPLK
.
1.1
New Features
Internal VPP detection circuitry automatically
configures the device for optimized write
operations.
The Word-Wide FlashFile memory family maintains
basic compatibility with Intel’s 28F016SA and
28F016SV. Key enhancements include:
A Common Flash Interface (CFI) permits OEM-
specified software algorithms to be used for entire
families of devices. This allows device-independent,
JEDEC ID-independent, and forward- and
backward-compatible software support for the
specified flash device families. Flash vendors can
standardize their existing interfaces for long-term
compatibility.
•
•
•
•
Common Flash Interface (CFI) Support
Scaleable Command Set (SCS) Support
Low Voltage Technology
Enhanced Suspend Capabilities
They share a compatible Status Register, basic
software commands, and pinout. These similarities
enable a clean migration from the 28F016SA or
28F016SV. When upgrading, it is important to note
the following differences:
Scaleable Command Set (SCS) allows a single,
simple software driver in all host systems to work
with all SCS-compliant flash memory devices,
independent of system-level packaging (e.g.,
memory card, SIMM, or direct-to-board placement).
•
Because of new feature and density options,
the devices have different manufacturer and
device identifier codes. This allows for software
optimization.
Additionally,
SCS
provides
the
highest
system/device data transfer rates and minimizes
device and system-level implementation costs.
•
•
New software commands.
A Command User Interface (CUI) serves as the
interface between the system processor and
To take advantage of low voltage on the
internal device operation.
A
valid command
28F160S3
and
28F320S3,
allow
VPP
sequence written to the CUI initiates device
automation. An internal Write State Machine (WSM)
automatically executes the algorithms and timings
necessary for block erase, program, and lock-bit
configuration operations.
connection to VCC
.
The 28F160S3 and
28F320S3 do not support a 12V VPP option.
1.2
Product Overview
A block erase operation erases one of the device’s
64-Kbyte blocks typically within tWHQV2/EHQV2
independent of other blocks. Each block can be
independently erased 100,000 times. Block erase
suspend mode allows system software to suspend
block erase to read or write data from any other
block.
The Word-Wide FlashFile memory family provides
density upgrades with pinout compatibility for the
16- and 32-Mbit densities. They are high-
performance memories arranged as 1 Mword and
2 Mwords of 16 bits or 2 Mbyte and 4 Mbyte of
8 bits. This data is grouped in thirty-two and sixty-
four 64-Kbyte blocks that can be erased, locked
and unlocked in-system. Figure 1 shows the block
Data is programmed in byte, word or page
increments. Program suspend mode enables the
system to read data or execute code from any other
flash memory array location.
diagram, and Figure
organization.
5 illustrates the memory
5
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