Cypress CY14B108K Specification Sheet

Features
■
20 ns, 25 ns, and 45 ns access times
■
Internally organized as 1024K x 8 (CY14B108K) or 512K x 16
(CY14B108M)
■ 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 (RTC)
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
A
19
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 19
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 #: 001-47378 Rev. **
PRELIMINARY
8 Mbit (1024K x 8/512K x 16) nvSRAM with
®
on power down
[1, 2, 3]
R
O
W
D
E
STATIC RAM
C
ARRAY
O
2048 X 2048 X 2
D
E
R
I
N
P
U
T
B COLUMN I/O
U
F
F
E
R COLUMN DEC
S
A A A A A A
9 10 11 12 13 14
- A for x16 configuration.
0 18
- DQ for x16 configuration.
0 15
• 198 Champion Court
CY14B108K, CY14B108M
■ 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 CY14B108K/CY14B108M combines a 8-Mbit
nonvolatile static RAM with a full featured RTC in a monolithic
integrated circuit. The embedded nonvolatile elements incor-
porate 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 RTC 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
Quatrum V
CAP
CC
Trap
2048 X 2048 X 2
POWER
CONTROL
STORE
RECALL
STORE/RECALL
CONTROL
SOFTWARE
DETECT
A A
15 16
• San Jose

Real Time Clock

V
RTCbat
V
RTCcap
HSB
A - A
14 2
X
out
RTC X
in
INT
MUX A - A
19 0
OE
WE
CE
BLE
BHE
,
CA 95134-1709 • 408-943-2600
Revised April 01, 2009
[+] Feedback