CY14B101KA Datasheet, PDF (1/29 Pages) Cypress Semiconductor – 1 Mbit (128K x 8/64K x 16) nvSRAM with Real Time Clock

PRELIMINARY
CY14B101KA/CY14B101MA
1 Mbit (128K x 8/64K x 16) nvSRAM with
Real Time Clock
Features
■ 1 Mbit nvSRAM
❐ 20 ns, 25 ns, and 45 ns access times
❐ Internally organized as 128K x 8 (CY14B101KA) or 64K x 16
(CY14B101MA)
❐ Hands off automatic STORE on power down with only a small
capacitor
❐ STORE to QuantumTrap nonvolatile elements is initiated by
software, hardware, or AutoStore on power down
❐ RECALL to SRAM initiated on power up or by software
■ High Reliability
❐ Infinite Read, Write, and RECALL cycles
❐ 200,000 STORE cycles to QuantumTrap
❐ 20 year data retention
■ Real Time Clock
❐ Full featured Real Time Clock
❐ Watchdog timer
❐ Clock alarm with programmable interrupts
❐ Capacitor or battery backup for RTC
❐ Backup current of 300 nA
■ Industry Standard Configurations
❐ Single 3V +20%, –10% operation
❐ Commercial and Industrial temperatures
❐ 44-pin and 54-pin TSOP II and 48-pin SSOP packages
❐ Pb-free and RoHS compliance
Functional Description
The Cypress CY14B101KA/CY14B101MA 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 is 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 periodic minutes, hours,
days, or months alarms. There is also a programmable watchdog
timer for process control.
Logic Block Diagram^{[1, 2, 3]}
A₅
A₆
A₇
A₈
A₉
A₁₂
A₁₃
A₁₄
A₁₅
A₁₆
DQ₀
DQ₁
DQ₂
DQ₃
DQ₄
DQ₅
DQ₆
DQ₇
DQ₈
DQ₉
DQ₁₀
DQ₁₁
DQ₁₂
DQ₁₃
DQ₁₄
DQ₁₅
Quatrum
Trap
V_CC
V_CA
P
1024 X 1024
R
O
STORE
POWER
CONTROL
V_RTCbat
V_RTCcap
W
RECALL
D
E
STATIC RAM
C
ARRAY
O
1024 X 1024
D
E
R
STORE/RECALL
CONTROL
SOFTWARE
DETECT
HSB
A₁₄ - A₂
I
N
P
U
T
B
COLUMN I/O
U
F
F
E
R
COLUMN DEC
S
A₀ A₁ A₂ A₃ A₄ A₁₀ A₁₁
RTC
MUX
X_out
X_in
INT
A₁₆- A₀
OE
WE
CE
BLE
BHE
Notes
1. Address A₀ - A₁₆ for x8 configuration and Address A₀ - A₁₅ 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 #: 001-42880 Rev. *C
• San Jose, CA 95134-1709 • 408-943-2600
Revised July 09, 2009
[+] Feedback