Cypress CY14B104K Specification Sheet

Features
20 ns, 25 ns, and 45 ns access times
■
Internally organized as 512K x 8 (CY14B104K) or 256K x 16
■
(CY14B104M)
Hands off automatic STORE on power down with only a small
■
capacitor
®
STORE to QuantumTrap nonvolatile elements is initiated by
■
software, device pin, or AutoStore
RECALL to SRAM initiated by software or power up
■
High reliability
■
Infinite Read, Write, and RECALL cycles
■
200,000 STORE cycles to QuantumTrap
■
20 year data retention
■
Single 3V +20%, –10% operation
■
Data integrity of Cypress nvSRAM combined with full featured
■

Real Time Clock

Logic Block Diagram
A
0
A
1
A
2
A
3
A
4
A
5
A
6
A
7
A
8
A
17
A
18
DQ
0
DQ
1
DQ
2
DQ
3
DQ
4
DQ
5
DQ
6
DQ
7
DQ
8
DQ
9
DQ
10
DQ
11
DQ
12
DQ
13
DQ
14
DQ
15
Notes
1. Address A - A for x8 configuration and Address A
0 18
2. Data DQ - DQ for x8 configuration and Data DQ
0 7
3. BHE and BLE are applicable for x16 configuration only.
Cypress Semiconductor Corporation
Document #: 001-07103 Rev. *K
PRELIMINARY
4 Mbit (512K x 8/256K x 16) nvSRAM with
®
on power down
[1, 2, 3]
R
O
W
D
E
STATIC RAM
C
ARRAY
O 2048 X 2048
D
E
R
I
N
P
U
T
B COLUMN I/O
U
F
F
E
R COLUMN DEC
S
A A A A
9 10 11 12
- A for x16 configuration.
0 17
- DQ for x16 configuration.
0 15
• 198 Champion Court
CY14B104K, CY14B104M
Watchdog timer
■
Clock alarm with programmable interrupts
■
Capacitor or battery backup for RTC
■
Commercial and industrial temperatures
■
44 and 54-pin TSOP II package
■
Pb-free and RoHS compliance
■
Functional Description
The Cypress CY14B104K/CY14B104M combines a 4-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 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.
V
V CA
Quatrum
CC
P
Trap
2048 X 2048
POWER
CONTROL
STORE
RECALL
STORE/RECALL
CONTROL
SOFTWARE
DETECT
A A A A
13 14 15 16
,
• San Jose
Real Time Clock
V
RTCbat
V
RTCcap
HSB
A - A
14 2
RTC
MUX A
CA 95134-1709 • 408-943-2600
Revised January 29, 2009
X
1
X
2
INT
- A
18 0
OE
WE
CE
BLE
BHE
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