參數(shù)資料
型號： DS1688
廠商： MAXIM INTEGRATED PRODUCTS INC
元件分類： Timer or RTC
英文描述： 1 TIMER(S), REAL TIME CLOCK, PDIP28
封裝： 0.600 INCH, DIP-28
文件頁數(shù)： 1/5頁
文件大?。?/td> 124K
代理商： DS1688
1 of 5
092299
FEATURES
Incorporates industry standard DS1287 PC clock
plus enhanced features:
§ +3 or +5 volt operation
§ 64–bit Silicon serial number
§ 64–bit customer specific ROM or additional
serial number available
§ Power control circuitry supports system
power on from date/time alarm or key closure
§ Automatic battery backup and write
protection to external SRAM
§ Crystal select bit allows RTC to operate with
6 pF or 12.5 pF crystal
§ 114 bytes user NVRAM
§ Auxiliary battery input
§ RAM clear input
§ Century register
§ 32 kHz output for power management
§ 32–bit V
CC powered elapsed time counter
§ 32–bit V
BAT powered elapsed time counter
§ 16–bit power cycle counter
§ Compatible with existing BIOS for original
DS1287 functions
§ Available as chip (DS1688) or stand–alone
module with embedded battery and crystal
(DS1691)
§ Timekeeping algorithm includes leap year
compensation valid up to 2100
ORDERING INFORMATION
PART #
DESCRIPTION
DS1688
RTC Chip, 28–pin DIP
DS1688S
RTC Chip, 28–pin SOIC
DS1691
RTC Module; 28–pin DIP
PIN ASSIGNMENT
PIN DESCRIPTION
X1
- Crystal Input
X2
- Crystal Output
RCLR
- RAM Clear Input
AD0-AD7
- Mux’ed Address/Data Bus
PWR
- Power-on Interrupt Output
KS
- Kickstart Input
CS
- RTC Chip Select Input
ALE
- RTC Address Strobe
WR
- RTC Write Data Strobe
RD
- RTC Read Data Strobe
VCCO
- RAM Power Supply Output
DS1688/DS1691
3 Volt/5 Volt Serialized Real Time Clock
with NV RAM Control
www.dalsemi.com
相關PDF資料
PDF描述
DS1691 1 TIMER(S), REAL TIME CLOCK, PDIP28
DS1724S DIGITAL TEMP SENSOR-SERIAL, 9BIT(s), RECTANGULAR, SURFACE MOUNT
DS1724S DIGITAL TEMP SENSOR-SERIAL, 9BIT(s), RECTANGULAR, SURFACE MOUNT
DS1973-F3 512 X 8 1-WIRE SERIAL EEPROM, MEDB2
DS1973-F5 512 X 8 1-WIRE SERIAL EEPROM, MRDB2
相關代理商/技術參數(shù)
參數(shù)描述
DS1688_05 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:3V/5V Serialized Real-Time Clocks with NV RAM Control
DS1688S 功能描述:實時時鐘 RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 總線接口:I2C 日期格式:DW:DM:M:Y 時間格式:HH:MM:SS RTC 存儲容量:64 B 電源電壓-最大:5.5 V 電源電壓-最小:1.8 V 最大工作溫度:+ 85 C 最小工作溫度: 安裝風格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube
DS1688S+ 功能描述:實時時鐘 RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 總線接口:I2C 日期格式:DW:DM:M:Y 時間格式:HH:MM:SS RTC 存儲容量:64 B 電源電壓-最大:5.5 V 電源電壓-最小:1.8 V 最大工作溫度:+ 85 C 最小工作溫度: 安裝風格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube
DS1689 功能描述:實時時鐘 RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 總線接口:I2C 日期格式:DW:DM:M:Y 時間格式:HH:MM:SS RTC 存儲容量:64 B 電源電壓-最大:5.5 V 電源電壓-最小:1.8 V 最大工作溫度:+ 85 C 最小工作溫度: 安裝風格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube
DS1689_05 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:3V/5V Serialized Real-Time Clocks with NV RAM Control
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