Overview

 


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Real-Time Clocks



DATA SHEETS
Part Number Description Key Advantages
MAX36025 Tamper-Reactive Cryptographic-Node Controller with Nonimprinting Memory

Industry's First Security Manager with Dual Encryption Engines, Authentication, and Tamper-Detection Hierarchy
MAX36051 Security Manager with 128 Bytes of Nonimprinting Memory

Single-Chip Solution Provides Security, Tamper Detection, and Encryption-Key Destruction in Event of Tamper
DS3644 1KB Secure Memory with Programmable Tamper Hierarchy

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

Single-Chip Solution Provides Security, Tamper Detection, Encryption-Key Storage, and Encryption-Key Destruction in Event of Tamper
DS3650 Security Manager with Thermal Tamper Detection

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

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

Single-Chip Solution Providing Security, Tamper Detection, Encryption Key Storage, and Encryption Key Destruction in Event of Tamper
DS1318 Parallel-Interface Elapsed Time Counter

Subsecond Elapsed-Time Counter Offers 244µs Resolution
DS1340, DS1340C I²C RTC with Trickle Charger

I²C Real-Time Clock with Trickle Charger Offers Software Clock Calibration
DS1338, DS1338C, DS1338U,
...
I²C RTC with 56-Byte NV RAM

DS1339, DS1339C, DS1339U I²C Serial Real-Time Clock

RTC Provides System Flexibility with Multiple Programmable Features



Key Specifications:

Timekeeping & Real-Time Clocks
Part Number Functions Date/ Time Format Interface VSUPPLY
(V)
Time Keeping Current
(nA)
CL
(pF)
Memory Type Memory Size
(Bytes)
Time of Day Alarms Integrated XTAL
hh = sec/100 typ
DS1318  Elapsed Time Counter Binary Bytewide 3.3 750 12.5 None - 1 No
DS1340  - YY-MM-DD/ HH:MM:SS I2C
1.8
3
3.3
5
800 12.5 None - 0
DS1338  - YY-MM-DD/ HH:MM:SS I2C
1.8
3
3.3
5
800 12.5 NV SRAM 56 0
DS1339  - YY-MM-DD/ HH:MM:SS I2C
2
3
3.3
5
400 6 None - 2
See All Timekeeping & Real-Time Clocks (86)

Security Managers
Part Number Analog Voltages Monitored Digital Inputs Monitored Internal Key Memory
(Bytes)
Ext. Memory Cntrl. Random Number Gen. Over Voltage Monitor Battery Monitor RoHS Available Package/Pins Smallest Available Pckg.
(mm2)
Oper. Temp.
(°C)
max w/pins
MAX36051  2 0 128 No No Yes Yes Yes
CSBGA/16
16 -40 to +85
DS3644  4 2 1024 Yes Yes Yes Yes
CSBGA/49
49 -55 to +95
DS3655  - 4 64 No No No No
CSBGA/16
16 -40 to +85
DS3650  2 - - No No Yes Yes
CSBGA/16
16 -40 to +85
DS3640  5 3 1024 No Yes Yes Yes
CSBGA/25
25 -40 to +85
DS3641  5 3 1024 No Yes Yes Yes
CSBGA/25
25 -40 to +85
See All Security Managers (10)





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