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Maxim > 方案 > 自动取款机(ATM)系统

实时时钟

数据资料
显示 标题/型号 关键优势
QV    带有RTC的1k x 8安全存储器，可设置防篡改检测等级
DS3644

业内首款安全存储器，具有防篡改响应层
QV    超低功耗篡改检测电路，带有无痕迹存储器
DS3655

具有安全、防篡改检测、加密存储功能的单芯片方案，发生篡改事件时擦除加密数据
QV    NV SRAM控制器、RTC及监控电路，带有篡改检测
DS3650

具有安全、防篡改检测的单芯片方案，发生篡改事件时擦除加密数据
QV    兼容于SPI™的安全监控电路，具有1kB加密保护存储器
DS3641

具有安全、防篡改检测、加密存储功能的单芯片方案，发生篡改事件时擦除加密数据
QV    NV SRAM控制器，带有实时时钟和篡改检测
DS3605

具有安全、防篡改检测、加密存储功能的单芯片方案，发生篡改事件时擦除加密数据
QV    I²C安全监控电路，带有1kB电池备份、加密SRAM
DS3640

具有安全、防篡改检测、加密存储功能的单芯片方案，发生篡改事件时擦除加密数据
QV    安全监控电路，带有64B电池备份、加密SRAM
DS3600

具有安全、防篡改检测、加密存储功能的单芯片方案，发生篡改事件时擦除加密数据
QV  PDF 3.3V、单芯片、1Mb非易失SRAM，带有时钟
DS3045W

DS3045W 3.3V单芯片1M非易失SRAM，集成RTC
QV  PDF 3.3V、单芯片、256kb非易失SRAM，带有时钟
DS3030W

DS3030W 3.3V单芯片256k非易失SRAM，集成RTC
QV  PDF 3.3V、单芯片、8Mb非易失SRAM，带有时钟
DS3065W
QV  PDF 高精度、I²C接口、集成RTC/TCXO/晶振
DS3231
QV  PDF 3.3V、单芯片、16Mb非易失SRAM，带有时钟
DS3070W

业内首款、也是唯一的单芯片、可回流焊接的NV SRAM模块
QV  PDF 低电压SPI/3线接口RTC，带有涓流充电器
DS1390, DS1391, DS1392, DS1393, DS1394

低电压、SPI™/3线接口RTC，带有涓流充电器，与同类产品相比具有更多功能和更小尺寸
QV  PDF 高速安全微控制器
DS5250
QV  PDF I²C RTC，带有涓流充电器
DS1340, DS1340C

I²C实时时钟，带有涓流充电器，可通过软件进行校准
QV  PDF I²C、32位二进制计数器看门狗RTC，带有涓流充电器和复位输入/输出
DS1374, DS1374C, DS1374U

历时计数器，提供上电复位、看门狗或闹钟、方波输出
QV  PDF I²C RTC，带有56字节非易失RAM
DS1338, DS1338C, DS1338U, DS1338Z
QV  PDF I²C串行实时时钟
DS1339, DS1339C, DS1339U

RTC的多种可编程特性为系统提供更多灵活性
QV  PDF I²C、32位二进制计数RTC
DS1672

低电压串行时钟芯片，内部包括超低电压时钟、电源监视电路、电源失效开关和涓流充电选项，单一芯片可替代多个分立元件
QV  PDF Y2K兼容、看门狗RTC，带有非易失控制
DS1500



Key Specifications:   Memory (EPROM, 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 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 -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 -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 -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 -40 to +85
See All Memory (EPROM, 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 Operating Temp. Range (°C)
DS1500  Yes No Yes No 1 Yes 3.3
5 		TSOP/32 -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 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 -40 to +85
0 to +70
See All Oscillator Modules (26)

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
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
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 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 -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 -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 -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 -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 -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 -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 -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 -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 -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 -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 		-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 		-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 		-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 		-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 		-40 to +85
See All Timekeeping & Real-Time Clocks (86)


         


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