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Maxim > 方案 > 机顶盒

存储器

数据资料
显示 标题/型号 关键优势
QV  PDF 高精度、I²C RTC，集成TCXO/晶体/FRAM
DS32B35, DS32C35

非易失存储器，无需备份电源、不受写次数限制
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、4Mb非易失SRAM，带有时钟
DS3050W
QV  PDF 3.3V、单芯片、8Mb非易失SRAM
DS2065W
QV  PDF 3.3V、单芯片、4Mb非易失SRAM
DS2050W
QV  PDF 3.3V、单芯片、1Mb非易失SRAM
DS2045W



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)
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
DS3050W  NV SRAM 512K x 8 Parallel Yes No No No No Yes
•µP Reset
•Periodic Interrupt
 3 3.6 MOD/256 -40 to +85
DS2050W  NV SRAM 512K x 8 Parallel No No No No No Yes
•µP Reset
 3 3.6 MOD/256 -40 to +85
DS2065W  NV SRAM 1M x 8 Parallel No No No No No Yes
•µP Reset
 3 3.6 MOD/256 -40 to +85
DS2045W  NV SRAM 128K x 8 Parallel No No No No No Yes
•µP Reset
 3 3.6 MOD/256 -40 to +85
See All Memory (EPROM, EEPROM, ROM, NV SRAM) (69)

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) Package Operating Temp. Range (°C)
DS32B35  32.768kHz TCXO Digital CMOS Open-Drain 2 3.5 1 (typ) 5 (0-10 Years) 2.7 to 3.63
3.3 		2.3 to 3.6 SOIC/20 -40 to +85
0 to +70
DS32C35  32.768kHz TCXO Digital CMOS Open-Drain 2 3.5 1 (typ) 5 (0-10 Years) 2.7 to 3.63
3.3 		2.3 to 3.6 SOIC/20 -40 to +85
0 to +70
See All Oscillator Modules (26)

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) Memory Type Memory Size (Bytes) Number of Time of Day Alarms Features Package Operating Temp. Range (°C)
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
DS3050W 
•Watchdog Timekeeper
 HH:MM:SS YYYY-MM-DD Bytewide 3.3  -  NV SRAM 512K 1
•µP Reset
•Periodic Interrupt
 MOD/256 -40 to +85
DS32B35   -  HH:MM:SS YY-MM-DD I2C 2.7 to 3.63
3.3 		840 FRAM 2K
8K 		 - 
•µP Reset
•Power Fail Output
•SOIC Package with Integrated Crystal
•Square-Wave Output
 SOIC/20 -40 to +85
0 to +70
DS32C35   -  HH:MM:SS YY-MM-DD I2C 2.7 to 3.63
3.3 		840 FRAM 2K
8K 		 - 
•µP Reset
•Power Fail Output
•SOIC Package with Integrated Crystal
•Square-Wave Output
 SOIC/20 -40 to +85
0 to +70
See All Timekeeping & Real-Time Clocks (86)


         


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