CY14B108L Datasheet, PDF (1/24 Pages) Cypress Semiconductor – 8 Mbit (1024K x 8/512K x 16) nvSRAM

CY14B108L, CY14B108N
8 Mbit (1024K x 8/512K x 16) nvSRAM
Features
■ 20 ns, 25 ns, and 45 ns Access Times
■ Internally Organized as 1024K x 8 (CY14B108L) or 512K x 16
(CY14B108N)
■ Hands off Automatic STORE on Power Down with only a Small
Capacitor
■ STORE to QuantumTrap Nonvolatile Elements Initiated by
Software, Device Pin, or AutoStore on Power Down
■ RECALL to SRAM Initiated by Software or Power Up
■ Infinite Read, Write, and RECALL Cycles
■ 200,000 STORE Cycles to QuantumTrap
■ 20 year Data Retention
■ Single 3V +20%, -10% Operation
■ Commercial and Industrial Temperatures
■ 48-Ball FBGA and 44/54-Pin TSOP-II Packages
■ Pb-free and RoHS Compliant
Functional Description
The Cypress CY14B108L/CY14B108N is a fast static RAM, with
a nonvolatile element in each memory cell. The memory is
organized as 1024 Kbytes of 8 bits each or 512K words of 16 bits
each. The embedded nonvolatile elements incorporate
QuantumTrap technology, producing the world’s most reliable
nonvolatile memory. The SRAM provides infinite read and write
cycles, while independent nonvolatile data resides in the highly
reliable QuantumTrap cell. Data transfers from the SRAM to the
nonvolatile elements (the STORE operation) takes place
automatically at power down. On power up, data is restored to
the SRAM (the RECALL operation) from the nonvolatile memory.
Both the STORE and RECALL operations are also available
under software control.
Logic Block Diagram^{[1, 2, 3]}
A₀
A₁
A₂
A₃
A₄
A₅
A₆
A₇
A₈
A₁₇
A₁₈
A₁₉
DQ₀
DQ₁
DQ₂
DQ₃
DQ₄
DQ₅
DQ₆
DQ₇
DQ₈
DQ₉
DQ₁₀
DQ₁₁
DQ₁₂
DQ₁₃
DQ₁₄
DQ₁₅
Quatrum Trap
V_CC
V_CAP
2048 X 2048 X 2
R
POWER
O
STORE
CONTROL
W
RECALL
D
E
STATIC RAM
STORE/RECALL
CONTROL
HSB
C
ARRAY
O
2048 X 2048 X 2
D
E
R
SOFTWARE
DETECT
A₁₄ - A₂
I
N
P
U
T
B
COLUMN I/O
U
F
F
E
R
COLUMN DEC
S
A₉ A₁₀ A₁₁ A₁₂ A₁₃ A₁₄ A₁₅ A₁₆
OE
WE
CE
BLE
BHE
Notes
1. Address A₀ - A₁₉ for x8 configuration and Address A₀ - A₁₈ for x16 configuration.
2. Data DQ₀ - DQ₇ for x8 configuration and Data DQ₀ - DQ₁₅ for x16 configuration.
3. BHE and BLE are applicable for x16 configuration only.
Cypress Semiconductor Corporation • 198 Champion Court
Document #: 001-45523 Rev. *D
• San Jose, CA 95134-1709 • 408-943-2600
Revised July 30, 2009
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