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CY14B101K Datasheet, PDF (1/24 Pages) Cypress Semiconductor – 1 Mbit (128K x 8) nvSRAM With Real-Time Clock
PRELIMINARY
CY14B101K
1 Mbit (128K x 8) nvSRAM With Real-Time Clock
Features
• Data integrity of Cypress nvSRAM combined with full
featured Real-Time Clock (RTC)
• Watchdog timer
• Clock alarm with programmable interrupts
• Capacitor or battery backup for RTC
• 25 ns, 35 ns, and 45 ns access times
• “Hands-off” automatic STORE on power down with only a
small capacitor
• STORE to QuantumTrap™ initiated by software, device pin,
or on power down
• RECALL to SRAM initiated by software or on power up
• Infinite READ, WRITE, and RECALL cycles
• High reliability
— Endurance to 200,000 cycles
— Data retention: 20 years @55°C
• 10 mA typical ICC at 200 ns cycle time
• Single 3V operation +20%, –10%
• Commercial and industrial temperature
• SSOP package (ROHS compliant)
Logic Block Diagram
Functional Description
The Cypress CY14B101K combines a 1 Mbit nonvolatile static
RAM with a full featured real-time clock in a monolithic
integrated circuit. The embedded nonvolatile elements
incorporate QuantumTrap technology producing the world’s
most reliable nonvolatile memory. The SRAM can be read and
written an infinite number of times, while independent,
nonvolatile data resides in the nonvolatile elements.
The Real-Time Clock function provides an accurate clock with
leap year tracking and a programmable, high accuracy
oscillator. The alarm function is programmable for one time
alarm or periodic seconds, minutes, hours, or days. There is
also a programmable watchdog timer for process control.
A5
A6
A7
A8
A9
A 12
A 13
A 14
A 15
A 16
DQ 0
DQ 1
DQ 2
DQ 3
DQ 4
DQ 5
DQ 6
DQ 7
QuantumTrap
1024 x 1024
STORE
STATIC RAM
ARRAY
1024 X 1024
RECALL
COLUMN IO
COLUMN DEC
A 0 A1 A 2 A 3 A 4 A 10 A 11
VCC
VCAP
POWER
CONTROL
STORE/
RECALL
CONTROL
VRTCbat
VRTCcap
HSB
SOFTWARE
DETECT
- A15 A0
RTC
MUX
x1
x2
INT
- A16 A0
OE
CE
WE
Cypress Semiconductor Corporation
Document #: 001-06401 Rev. *E
• 198 Champion Court • San Jose, CA 95134-1709 • 408-943-2600
Revised March 01, 2007
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