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Cypress Semiconductor Electronic Components Datasheet

CY14C101I Datasheet

1 Mbit (128K x 8) Serial (I2C) nvSRAM

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CY14C101I pdf
CY14C101I
PRELIMINARY
CY14B101I, CY14E101I
1 Mbit (128K x 8) Serial (I2C) nvSRAM
with Real Time Clock
Features
1-Mbit nonvolatile static random access memory (nvSRAM)
Internally organized as 128 K x 8
STORE to QuantumTrap nonvolatile elements initiated
automatically on power-down (AutoStore) or by using
I2C
command (Software STORE) or HSB pin (Hardware STORE)
RorEbCyAIL2CL
to SRAM initiated on power-up (Power
command (Software RECALL)
Up
RECALL)
Automatic STORE on power-down with a small capacitor
I2C access to special functions
Nonvolatile STORE/RECALL
8-byte serial number
Manufacturer ID and Product ID
Sleep mode
Low power consumption
Average active current of 1 mA at 3.4 MHz operation
Average standby mode current of 250 uA
Sleep mode current of 8 uA
High reliability
Infinite read, write, and RECALL cycles
1 million STORE cycles to QuantumTrap
Data retention: 20 years at 85 °C
Real Time Clock (RTC)
Full-featured RTC
Watchdog timer
Clock alarm with programmable interrupts
Backup power fail indication
Square wave output with programmable frequency
(1 Hz, 512 Hz, 4096 Hz, 32.768 kHz)
Capacitor or battery backup for RTC
Backup current of 0.45 uA (typical)
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
Industry standard configurations
Operating voltages:
• CY14C101I: VCC = 2.4 V to 2.6 V
• CY14B101I: VCC = 2.7 V to 3.6 V
• CY14E101I: VCC = 4.5 V to 5.5 V
Industrial temperature
16-pin small outline integrated circuit (SOIC) package
Restriction of hazardous substances (RoHS) compliant
Overview
The Cypress CY14C101I/CY14B101I/CY14E101I combines a
1-Mbit nvSRAM[1] with a full-featured RTC in a monolithic
integrated circuit with serial I2C interface. The memory is
organized as 128 K words of 8 bits each. The embedded nonvol-
atile 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.
On power-up, data is restored to the SRAM from the nonvolatile
memory (RECALL operation). The STORE and RECALL opera-
tions can also be initiated by the user through I2C commands.
Logic Block Diagram
VCC VCAP VRTCcap VRTCbat
Serial Number
8x8
Manufacture ID/
Product ID
Power Control
Block
Sleep
Memory Control Register
Command Register
Quantrum Trap
128 K x 8
SDA
SCL
A2, A1
WP
www.DataSheet4U.com
2
I C Control Logic
Slave Address
Decoder
Control Registers Slave
Memory Slave
RTC Slave
Memory
Address and Data
Control
SRAM
128 K x 8
STORE
RECALL
X in
INT/SQW
Xout
RTC Control Logic
Registers
Counters
Note
1. Serial (I2C) nvSRAM will be referred to as nvSRAM throughout the datasheet.
Cypress Semiconductor Corporation • 198 Champion Court
Document #: 001-54391 Rev. *C
• San Jose, CA 95134-1709 • 408-943-2600
Revised January 21, 2011
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Cypress Semiconductor Electronic Components Datasheet

CY14C101I Datasheet

1 Mbit (128K x 8) Serial (I2C) nvSRAM

No Preview Available !

CY14C101I pdf
PRELIMINARY
CY14C101I
CY14B101I, CY14E101I
Contents
Pinouts .............................................................................. 3
I2C Interface ...................................................................... 4
Protocol Overview ............................................................ 4
I2C Protocol – Data Transfer....................................... 4
Data Validity ...................................................................... 5
START Condition (S) ........................................................ 5
STOP Condition (P) .......................................................... 5
Repeated START (Sr) ....................................................... 5
Byte Format....................................................................... 6
Acknowledge /No-acknowledge...................................... 6
High-Speed Mode (Hs-mode) .......................................... 7
Serial Data Format in Hs-mode................................... 7
Slave Device Address ...................................................... 7
RTC Registers Slave Device....................................... 8
Control Registers Slave Device................................... 8
Memory Control Register ............................................ 8
Command Register ..................................................... 9
Write Protection (WP)....................................................... 9
AutoStore Operation ........................................................ 9
Hardware STORE and HSB pin Operation ................... 10
Hardware RECALL (Power Up)................................. 10
Write Operation............................................................... 10
Read Operation............................................................... 11
Memory Slave Access.................................................... 11
Write nvSRAM........................................................... 11
Current nvSRAM Read.............................................. 13
Random Address Read ............................................. 14
RTC Registers Slave Access......................................... 15
Write RTC Registers ................................................. 15
Current Address RTC Registers Read ...................... 16
Random Address RTC Registers Read .................... 16
Control Registers Slave ................................................. 17
Write Control Registers ............................................. 17
Current Control Registers Read ................................ 18
Random Control Registers Read .............................. 18
Serial Number ........................................................... 19
Device ID Read ......................................................... 20
Executing Commands using Command Register...... 20
Real Time Clock Operation............................................ 21
nvTIME Operation ..................................................... 21
Clock Operations....................................................... 21
Reading the Clock ..................................................... 21
Setting the Clock ....................................................... 21
Backup Power ........................................................... 21
Stopping and Starting the Oscillator.......................... 21
Calibrating the Clock ................................................. 22
Alarm ......................................................................... 22
Watchdog Timer ........................................................ 22
Programmable Square Wave Generator................... 23
Power Monitor ........................................................... 23
Backup Power Monitor .............................................. 23
Interrupts ................................................................... 23
Flags Register ........................................................... 24
Best Practices................................................................. 30
Maximum Ratings........................................................... 31
Operating Range............................................................. 31
DC Electrical Characteristics ........................................ 31
Data Retention and Endurance .................................... 32
Thermal Resistance........................................................ 32
AC Test Conditions ........................................................ 33
RTC Characteristics ....................................................... 33
AC Switching Characteristics ....................................... 34
nvSRAM Specifications ................................................. 35
Software Controlled STORE/RECALL Cycles.............. 36
Hardware STORE Cycle ................................................. 37
Ordering Information...................................................... 38
Ordering Code Definition........................................... 38
Package Diagram............................................................ 39
Acronyms ........................................................................ 40
Document Conventions ................................................. 40
Units of Measure ....................................................... 40
Document History Page ................................................ 41
Sales, Solutions, and Legal Information ...................... 42
Worldwide Sales and Design Support....................... 42
Products .................................................................... 42
PSoC Solutions ......................................................... 42
www.DataSheet4U.com
Document #: 001-54391 Rev. *C
Page 2 of 42
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Part Number CY14C101I
Description 1 Mbit (128K x 8) Serial (I2C) nvSRAM
Maker Cypress Semiconductor
Total Page 30 Pages
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