CY14MB064J1A/CY14MB064J2A
CY14ME064J1A/CY14ME064J2A
PRELIMINARY
64-Kbit (8 K × 8) Serial (I2C) nvSRAM
64-Kbit (8
K × 8) Serial (I2C) nvSRAM
■ Industry standard configurations
❐ Operating voltages:
• CY14MB064J: VCC = 2.7 V to 3.6 V
• CY14ME064J: VCC = 4.5 V to 5.5 V
❐ Industrial temperature
Features
■ 64-Kbit nonvolatile static random access memory (nvSRAM)
❐ Internally organized as 8 K × 8
❐ STORE to QuantumTrap nonvolatile elements initiated
automatically on power-down (AutoStore) or by using I2C
command (Software STORE)
❐ 8-pin small outline integrated circuit (SOIC) package
❐ Restriction of hazardous substances (RoHS) compliant
❐ RECALL to SRAM initiated on power-up (Power-Up
RECALL) or by I2C command (Software RECALL)
Overview
❐ Automatic STORE on power-down with a small capacitor
(except for CY14MX064J1A)
The Cypress CY14MX064J combines a 64-Kbit nvSRAM[1] with
a nonvolatile element in each memory cell. The memory is
organized as 8 K words of 8 bits each. The embedded
nonvolatile elements incorporate the QuantumTrap technology,
creating the world’s most reliable nonvolatile memory. The
SRAM provides infinite read and write cycles, while the
QuantumTrap cells provide highly reliable nonvolatile storage of
data. Data transfers from SRAM to the nonvolatile elements
(STORE operation) takes place automatically at power-down
(except for CY14MX064J1A). On power-up, data is restored to
the SRAM from the nonvolatile memory (RECALL operation).
The STORE and RECALL operations can also be initiated by the
user through I2C commands.
■ High reliability
❐ Infinite read, write, and RECALL cycles
❐ 1 million STORE cycles to QuantumTrap
❐ Data retention: 20 years at 85 C
■ High speed I2C interface
❐ Industry standard 100 kHz and 400 kHz speed
❐ Fast-mode Plus: 1 MHz speed
❐ High speed: 3.4 MHz
❐ Zero cycle delay reads and writes
■ Write protection
❐ Hardware protection using Write Protect (WP) pin
❐ Software block protection for 1/4, 1/2, or entire array
■ I2C access to special functions
❐ Nonvolatile STORE/RECALL
❐ 8 byte serial number
❐ Manufacturer ID and Product ID
❐ Sleep mode
Configuration
Feature
AutoStore
Software STORE
CY14MX064J1A
CY14MX064J2A
No
Yes
Yes
Yes
A2, A1
Slave Address pins
A2, A1, A0
■ Low power consumption
❐ Average active current of 1 mA at 3.4 MHz operation
❐ Average standby mode current of 120 µA
❐ Sleep mode current of 8 µA
Logic Block Diagram
Serial Number
8 x 8
VCC VCAP
Manufacturer ID /
Product ID
Power Control
Block
Memory Control Register
Command Register
Quantum Trap
8 K x 8
Sleep
STORE
SRAM
8 K x 8
Control Registers Slave
Memory Slave
SDA
SCL
A2, A1, A0
WP
I2C Control Logic
Slave Address
Decoder
Memory
Address and Data
Control
RECALL
Note
2
1. Serial (I C) nvSRAM is referred to as nvSRAM throughout the datasheet.
Cypress Semiconductor Corporation
Document Number: 001-70393 Rev. *E
•
198 Champion Court
•
San Jose, CA 95134-1709
•
408-943-2600
Revised August 3, 2012