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Maxim > Solutions > Automatic Teller Machine (ATM) Systems

Real-Time Clocks

DATA SHEETS
Display Title / Parts Key Advantages
QV    1k x 8 Secure Memory with Programmable Tamper-Detection Hierarchy and RTC
DS3644

Industry's First Secure Memory with Tamper-Detection Hierarchy
QV    Ultra-Low-Power Tamper-Detection Circuit with Nonimprinting Memory
DS3655

Single-Chip Solution Provides Security, Tamper Detection, Encryption-Key Storage, and Encryption-Key Destruction in Event of Tamper
QV    NV SRAM Controller, RTC, and Supervisor with Tamper Detection
DS3650

Single-Chip Solution Provides Security, Tamper Detection, and Encryption-Key Destruction in Event of Tamper
QV    SPI™-Compatible Secure Supervisor with 1kB Nonimprinting Key Memory
DS3641

Single-Chip Solution Provides Security, Tamper-Detection, Encryption-Key Storage, and Encryption-Key Destruction in Event of Tamper
QV    NV SRAM Controller with Real-Time Clock and Thermal Tamper Detection
DS3605

Single-Chip Solution Provides Security, Tamper Detection, Encryption-Key Storage, and Encryption-Key Destruction in Event of Tamper
QV    I²C Secure Supervisor with 1kB Nonimprinting Battery-Backed Encryption Key SRAM
DS3640

Single-Chip Solution Providing Security, Tamper Detection, Encryption Key Storage, and Encryption Key Destruction in Event of Tamper
QV    Secure Supervisor with 64B Nonimprinting, Battery-Backed Encryption Key SRAM
DS3600

Single-Chip Solution Provides Security, Tamper Detection, Encryption Key Storage, and Encryption Key Destruction in Event of Tamper
QV  PDF 3.3V Single-Piece 1Mb Nonvolatile SRAM with Clock
DS3045W

DS3045W 3.3V Single Piece 1M Nonvolatile SRAM with Integrated RTC
QV  PDF 3.3V Single-Piece 256kb Nonvolatile SRAM with Clock
DS3030W

DS3030W 3.3V Single Piece 256k Nonvolatile SRAM with Integrated RTC
QV  PDF 3.3V Single-Piece 8Mb Nonvolatile SRAM with Clock
DS3065W

QV  PDF Extremely Accurate I²C-Integrated RTC/TCXO/Crystal
DS3231

QV  PDF 3.3V Single-Piece 16Mb Nonvolatile SRAM with clock
DS3070W

Industry's First and Only Single-Piece, Reflowable NVSRAM Module
QV  PDF Low-Voltage SPI/3-Wire RTCs with Trickle Charger
DS1390, DS1391, DS1392, DS1393

Low-Voltage SPI™/3-Wire RTCs with Trickle Charger have the Broadest Feature Set and the Smallest Footprint in Their Class
QV  PDF High-Speed Secure Microcontroller
DS5250

QV  PDF I²C RTC with Trickle Charger
DS1340, DS1340C

I²C Real-Time Clock with Trickle Charger Offers Software Clock Calibration
QV  PDF I²C, 32-Bit Binary Counter Watchdog RTC with Trickle Charger and Reset Input/Output
DS1374, DS1374C, DS1374U

Elapsed Time Counter Provides Power-On Reset, Watchdog or Alarm, and Square Wave
QV  PDF I²C RTC with 56-Byte NV RAM
DS1338, DS1338C, DS1338U, DS1338Z

QV  PDF I²C Serial Real-Time Clock
DS1339, DS1339C, DS1339U

RTC Provides System Flexibility with Multiple Programmable Features
QV  PDF I²C 32-Bit Binary Counter RTC
DS1672

Low-Voltage, Serial Timekeeping Chip Combines an Ultra-Low-Voltage Clock with Sophisticated Power-Monitoring Circuitry, Power-Fail Switches, and a Switch to Optional Trickle-Charging, Replacing Several Discrete Components with One Chip
QV  PDF Y2K-Compliant Watchdog RTC with NV Control
DS1500




Key Specifications:   Memory (EPROM, SRAM, EEPROM, ROM, NV SRAM)
Part Number Memory Type Memory Size Bus Type Real-Time Clock DIP with Internal Battery PowerCap Package Battery Monitor With GPIO Single Piece Module Features Supply Voltage (min) (V) Supply Voltage (max) (V) Package Smallest Available Package (max w/pins) (mm2) Operating Temp. Range (°C)
DS3070W  NV SRAM 2M x 8 Parallel Yes No No No No Yes
µP Reset
Periodic Interrupt
3 3.6 MOD/256 729 -40 to +85
DS3030W  NV SRAM 32k x 8 Parallel Yes No No No No Yes
µP Reset
Periodic Interrupt
3 3.6 MOD/256 729 -40 to +85
DS3045W  NV SRAM 128k x 8 Parallel Yes No No No No Yes
µP Reset
Periodic Interrupt
3 3.6 MOD/256 729 -40 to +85
DS3065W  NV SRAM 1M x 8 Parallel Yes No No No No Yes
µP Reset
Periodic Interrupt
3 3.6 MOD/256 729 -40 to +85
See All Memory (EPROM, SRAM, EEPROM, ROM, NV SRAM) (69)

Key Specifications:   Non-Volatile RAM Controllers
Part Number CE Control Smart-Socket with Internal Battery Li Battery Monitor Power Fail Output Number of RAMs Controlled RESET Output Supply Voltage (V) Package Smallest Available Package (max w/pins) (mm2) Operating Temp. Range (°C)
DS1500  Yes No Yes No 1 Yes 3.3
5
TSOP/32 168 -40 to +85
See All Non-Volatile RAM Controllers (16)

Key Specifications:   Oscillator Modules
Part Number Frequency Oscillator Type Tuning Adjustment Type Frequency Output Type Freq. Stability vs. Temp. @0 to +40°C (±ppm) Freq. Stab. vs.Temp. @-40 to 0/ +40 to 85°C (±ppm) Frequency Stability vs. Supply Voltage (±ppm/V) Frequency Stability vs. Aging (±ppm) Supply Voltage (V) Battery Voltage (V) Industry Qualified Package Smallest Available Package (max w/pins) (mm2) Operating Temp. Range (°C)
DS3231  32.768kHz TCXO Digital CMOS Open-Drain 2 3.5 1 (typ) 5 (0-10 Years) 2.3 to 5.5
3
3.3
5
2.3 to 5.5 Automotive - General SOIC/16 80 -40 to +85
0 to +70
See All Oscillator Modules (23)

Key Specifications:   Secure Microcontrollers
Part Number Module with Internal Battery NV RAM Real-Time Memory Encryption Key Features SIP Stik Products Real-Time Clock CRC Hardware Package Smallest Available Package (max w/pins) (mm2)
DS5250  No 2k x 8 Int. Battery-Backed
8M x 8 Ext. Battery-Backed
56/112-Bit Program Mem Encryption
Security Lock
Write-Protected Program Partition in RAM
No Yes Yes MQFP/100
MQFP/80
436
See All Secure Microcontrollers (11)

Key Specifications:   Secure Supervisors
Part Number Analog Voltages Monitored Digital Inputs Monitored Internal Key Memory (Bytes) External Memory Control Random Number Generator Over-Voltage Monitor Battery Monitor Operating Temp. Range (°C)
DS3650  2  -   -  No No Yes Yes -40 to +85
DS3605  4 1  -  Yes Yes No Yes -40 to +85
DS3600  4 1 64 Yes Yes No Yes -40 to +85
DS3640  5 3 1024 No Yes Yes Yes -40 to +85
DS3641  5 3 1024 No Yes Yes Yes -40 to +85
DS3655   -  4 64 No No No No -40 to +85
See All Secure Supervisors (7)

Key Specifications:   Timekeeping & Real-Time Clocks
Part Number Functions Time Format (hh = sec/100) Date Format Interface Supply Voltage (V) Time- keeping Current (typ) (nA) CL, Load Capacitance (pF) Memory Type Memory Size (Bytes) Number of Time of Day Alarms Features Industry Qualified Package Smallest Available Package (max w/pins) (mm2) Operating Temp. Range (°C)
DS3070W 
Watchdog Timekeeper
HH:MM:SS YYYY-MM-DD Bytewide 3.3  -   -  NV SRAM 2M 1
µP Reset
Periodic Interrupt
 -  MOD/256 729 -40 to +85
DS3030W 
Watchdog Timekeeper
HH:MM:SS YYYY-MM-DD Bytewide 3.3  -   -  NV SRAM 32k 1
µP Reset
Periodic Interrupt
 -  MOD/256 729 -40 to +85
DS3045W 
Watchdog Timekeeper
HH:MM:SS YYYY-MM-DD Bytewide 3.3  -   -  NV SRAM 128k 1
µP Reset
Periodic Interrupt
 -  MOD/256 729 -40 to +85
DS3065W 
Watchdog Timekeeper
HH:MM:SS YYYY-MM-DD Bytewide 3.3  -   -  NV SRAM 1M 1
µP Reset
Periodic Interrupt
 -  MOD/256 729 -40 to +85
DS1500 
NV SRAM Control
Watchdog Timekeeper
HH:MM:SS YY-MM-DD Bytewide 3.3
5
 -  12.5
6
NV SRAM 256 1
µP Reset
Kick-Start
Periodic Interrupt
Square-Wave Output
Wake-up
 -  TSOP/32 168 -40 to +85
DS3231   -  HH:MM:SS YY-MM-DD I2C 2.3 to 5.5
3
3.3
5
840  -  None  -  2
µP Reset
Power Fail Output
SOIC Package with Integrated Crystal
Square-Wave Output
Automotive - General SOIC/16 80 -40 to +85
0 to +70
DS1390   -  HH:MM:SS:hh YY-MM-DD SPI 1.8
3
3.3
5
500 6 None  -  1
Square-Wave Output
Trickle Charger
 -  uSOP/10 15 -40 to +85
DS1391   -  HH:MM:SS:hh YY-MM-DD SPI 1.8
3
3.3
5
500 6 None  -  1
µP Reset
Power Fail Output
Trickle Charger
 -  uSOP/10 15 -40 to +85
DS1392   -  HH:MM:SS:hh YY-MM-DD 3-Wire 1.8
3
3.3
5
500 6 None  -  1
Square-Wave Output
Trickle Charger
 -  uSOP/10 15 -40 to +85
DS1393   -  HH:MM:SS:hh YY-MM-DD 3-Wire 1.8
3
3.3
5
500 6 None  -  1
µP Reset
Power Fail Output
Trickle Charger
 -  uSOP/10 15 -40 to +85
DS1340   -  HH:MM:SS YY-MM-DD I2C 1.8
3
3.3
5
800 12.5 None  -  0
SOIC Package with Integrated Crystal
Square-Wave Output
Trickle Charger
 -  SOIC/16
SOIC/8
uSOP/8
16 -40 to +85
DS1374 
Elapsed Time Counter
Watchdog Timekeeper
Binary Binary I2C 1.8
3
3.3
5
400 6 None  -  1
µP Reset
Periodic Interrupt
SOIC Package with Integrated Crystal
Trickle Charger
 -  SOIC/16
uSOP/10
15 -40 to +85
DS1338   -  HH:MM:SS YY-MM-DD I2C 1.8
3
3.3
5
800 12.5 NV SRAM 56 0
SOIC Package with Integrated Crystal
Square-Wave Output
 -  SOIC/16
SOIC/8
uSOP/8
16 -40 to +85
DS1339   -  HH:MM:SS YY-MM-DD I2C 2
3
3.3
5
400 6 None  -  2
SOIC Package with Integrated Crystal
Square-Wave Output
Trickle Charger
 -  SOIC/16
uSOP/8
16 -40 to +85
DS1672 
Elapsed Time Counter
Binary Binary I2C 2
3
3.3
425 6 None  -  0
Trickle Charger
 -  PDIP/8
SOIC/8
uSOP/8
16 -40 to +85
See All Timekeeping & Real-Time Clocks (86)





         


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