SST34HF1641J Datasheet, PDF (1/37 Pages) Silicon Storage Technology, Inc – 16 Mbit Concurrent SuperFlash + 4/8 Mbit PSRAM ComboMemory

16 Mbit Concurrent SuperFlash + 4/8 Mbit PSRAM ComboMemory
SST34HF1641J / SST34HF1681J
SST34HF168116Mb CSF (x8/x16) + 2/4/8 Mb SRAM (x16) MCP ComboMemory
FEATURES:
Data Sheet
• Flash Organization: 1M x16 or 2M x8
• Dual-Bank Architecture for Concurrent
Read/Write Operation
– Bottom Sector Protection
– 16 Mbit: 12 Mbit + 4 Mbit
• PSRAM Organization:
– 4 Mbit: 256K x16
– 8 Mbit: 512K x16
• Single 2.7-3.3V Read and Write Operations
• Superior Reliability
– Endurance: 100,000 Cycles (typical)
– Greater than 100 years Data Retention
• Low Power Consumption:
– Active Current: 25 mA (typical)
– PSRAM Standby Current: 40 µA (typical)
• Hardware Sector Protection (WP#)
– Protects 4 outer most sectors (4 KWord) in the
larger bank by holding WP# low and unprotects
by holding WP# high
• Hardware Reset Pin (RST#)
– Resets the internal state machine to reading
data array
• Byte Selection for Flash (CIOF pin)
– Selects 8-bit or 16-bit mode (56-ball package
only)
• Sector-Erase Capability
– Uniform 2 KWord sectors
• Block-Erase Capability
– Uniform 32 KWord blocks
• Read Access Time
– Flash: 70 ns
– PSRAM: 70 ns
• Erase-Suspend / Erase-Resume Capabilities
• Security ID Feature
– SST: 128 bits
– User: 128 bits
• Latched Address and Data
• Fast Erase and Program (typical):
– Sector-Erase Time: 18 ms
– Block-Erase Time: 18 ms
– Chip-Erase Time: 35 ms
– Program Time: 7 µs
• Automatic Write Timing
– Internal V_PP Generation
• End-of-Write Detection
– Toggle Bit
– Data# Polling
– Ready/Busy# pin
• CMOS I/O Compatibility
• JEDEC Standard Command Set
• Packages Available
– 56-ball LFBGA (8mm x 10mm)
– 62-ball LFBGA (8mm x 10mm)
• All non-Pb (lead-free) devices are RoHS compliant
PRODUCT DESCRIPTION
The SST34HF16x1J ComboMemory devices integrate
either a 1M x16 or 2M x8 CMOS flash memory bank with
either a 256K x16, or 512K x16 CMOS pseudo SRAM
(PSRAM) memory bank in a multi-chip package (MCP).
These devices are fabricated using SST’s proprietary, high-
performance CMOS SuperFlash technology incorporating
the split-gate cell design and thick-oxide tunneling injector
to attain better reliability and manufacturability compared
with alternate approaches. The SST34HF16x1J devices
are ideal for applications such as cellular phones, GPS
devices, PDAs, and other portable electronic devices in a
low power and small form factor system.
The SST34HF16x1J feature dual flash memory bank
architecture allowing for concurrent operations between the
two flash memory banks and the PSRAM. The devices can
read data from either bank while an Erase or Program
operation is in progress in the opposite bank. The two flash
memory banks are partitioned into 12 Mbit and 4 Mbit with
bottom sector protection options for storing boot code, pro-
gram code, configuration/parameter data and user data.
The SuperFlash technology provides fixed Erase and Pro-
gram times, independent of the number of Erase/Program
cycles that have occurred. Therefore, the system software
or hardware does not have to be modified or de-rated as is
necessary with alternative flash technologies, whose Erase
and Program times increase with accumulated Erase/Pro-
gram cycles. The SST34HF16x1J devices offer a guaran-
teed endurance of 10,000 cycles. Data retention is rated at
greater than 100 years. With high-performance Program
operations, the flash memory banks provide a typical Pro-
gram time of 7 µsec. The entire flash memory bank can be
erased and programmed word-by-word in typically 4 sec-
onds for the SST34HF16x1J, when using interface fea-
tures such as Toggle Bit, Data# Polling, or RY/BY# to
©2006 Silicon Storage Technology, Inc.
S71336-00-000
8/06
1
The SST logo and SuperFlash are registered trademarks of Silicon Storage Technology, Inc.
CSF and ComboMemory are trademarks of Silicon Storage Technology, Inc.
These specifications are subject to change without notice.