CY14B104K/CY14B104M
4-Mbit (512 K × 8/256 K × 16) nvSRAM
with Real Time Clock
4-Mbit (512
K × 8/256 K × 16) nvSRAM with Real Time Clock
■ Watchdog timer
Features
■ Clock alarm with programmable interrupts
■ Capacitor or battery backup for RTC
■ 25 ns and 45 ns access times
■ Internally organized as 512 K × 8 (CY14B104K) or 256 K × 16
(CY14B104M)
■ Industrial temperature
■ Hands off automatic STORE on power-down with only a small
capacitor
■ 44-pin and 54-pin thin small outline package (TSOP) Type II
■ Pb-free and restriction of hazardous substances (RoHS)
compliant
■ STORE to QuantumTrap nonvolatile elements is initiated by
software, device pin, or AutoStore on power-down
Functional Description
■ RECALL to SRAM is initiated by software or power-up
■ High reliability
The Cypress CY14B104K and CY14B104M combines a 4-Mbit
nonvolatile static RAM (nvSRAM) with a full-featured RTC 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.
■ Infinite read, write, and RECALL cycles
■ 1 million STORE cycles to QuantumTrap
■ 20 year data retention
■ Single 3 V +20%, –10% operation
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.
■ Data integrity of Cypress nvSRAM combined with full-featured
real time clock (RTC)
For a complete list of related documentation, click here.
VCA
VCC
Logic Block
Quatrum
Trap
P
2048 X 2048
VRTCbat
A0
A1
A2
A3
A4
A5
A6
POWER
CONTROL
R
O
W
STORE
VRTCcap
RECALL
STORE/RECALL
HSB
D
E
C
O
D
E
R
CONTROL
STATIC RAM
ARRAY
2048 X 2048
A7
A8
A17
SOFTWARE
A14 - A2
DETECT
A18
DQ0
DQ1
DQ2
Xout
Xin
DQ3
DQ4
RTC
MUX
I
INT
N
P
U
T
B
U
F
F
E
R
S
DQ5
DQ6
DQ7
COLUMN I/O
A18- A0
DQ8
DQ9
DQ10
OE
COLUMN DEC
WE
DQ11
DQ12
DQ13
DQ14
CE
BLE
A9 A10
A
11 A12 A13 A14 A15 A16
DQ15
BHE
Notes
1. Address A –A for × 8 configuration and Address A –A for × 16 configuration.
0
18
0
17
2. Data DQ –DQ for × 8 configuration and Data DQ –DQ for × 16 configuration.
0
7
0
15
3. BHE and BLE are applicable for × 16 configuration only.
Cypress Semiconductor Corporation
Document Number: 001-07103 Rev. AD
•
198 Champion Court
•
San Jose, CA 95134-1709
•
408-943-2600
Revised November 9, 2017