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DESCRIPTION
The DS1315 Phantom Time Chip is a
combination of a CMOS timekeeper and a
nonvolatile memory controller. In the absence of
power, an external battery maintains the
timekeeping operation and provides power for a
CMOS static RAM. The watch keeps track of
hundredths of seconds, seconds, minutes, hours,
day, date, month, and year information. The last
day of the month is automatically adjusted for
months with fewer than 31 days, including leap
year correction. The watch operates in one of two
formats: a 12-hour mode with an AM/PM
indicator or a 24-hour mode. The nonvolatile
controller supplies all the necessary support
circuitry to convert a CMOS RAM to a
nonvolatile memory. The DS1315 can be
interfaced with either RAM or ROM without
leaving gaps in memory.
PIN CONFIGURATIONS
Pin Configurations continued at end of data sheet.
FEATURES
Real-Time Clock Keeps Track of Hundredths
of Seconds, Seconds, Minutes, Hours, Days,
Date of the Month, Months, and Years
Automatic Leap Year Correction Valid Up to
2100
No Address Space Required to Communicate
with RTC
Provides Nonvolatile Controller Functions for
Battery Backup of SRAM
Supports Redundant Battery Attachment for
High-Reliability Applications
Full ±10% VCC Operating Range
+3.3V or +5V Operation
Industrial (-40°C to +85°C) Operating
Temperature Ranges Available
PIN DESCRIPTION
X1, X2
- 32.768kHz Crystal Connection
WE
- Write Enable
BAT1
- Battery 1 Input
GND
- Ground
D
- Data Input
Q
- Data Output
ROM/ RAM
- ROM/RAM Mode Select
CEO
- Chip Enable Output
CEI
- Chip Enable Input
OE
- Output Enable
RST
- Reset
BAT2
- Battery 2 Input
VCC0
- Switched Supply Output
VCC1
- Power Supply Input
19-6080; Rev 11/11
www.dalsemi.com
PDIP (300 mils)
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
VCC1
VCC0
BAT2
RST
OE
CEI
CEO
ROM/RAM
X1
X2
WE
BAT1
GND
D
Q
GND
DS1315
Phantom Time Chip
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相关代理商/技术参数
DS1315EN-5+ 功能描述:实时时钟 Phantom Time Chip RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 总线接口:I2C 日期格式:DW:DM:M:Y 时间格式:HH:MM:SS RTC 存储容量:64 B 电源电压-最大:5.5 V 电源电压-最小:1.8 V 最大工作温度:+ 85 C 最小工作温度: 安装风格:Through Hole 封装 / 箱体:PDIP-8 封装:Tube
DS1315EN-5+R 制造商:DALLAS 制造商全称:Dallas Semiconductor 功能描述:Phantom Time Chip
DS1315EN-5+T 制造商:DALLAS 制造商全称:Dallas Semiconductor 功能描述:Phantom Time Chip
DS1315EN-5+T&R 制造商:Maxim Integrated Products 功能描述:REAL TIME CLOCK PHANTOM CLOCK 20TSSOP - Tape and Reel 制造商:Maxim Integrated Products 功能描述:IC T-CHIP PHANTOM 5V 20-TSSOP
DS1315EN-5+T&R 功能描述:实时时钟 Phantom Time Chip RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 总线接口:I2C 日期格式:DW:DM:M:Y 时间格式:HH:MM:SS RTC 存储容量:64 B 电源电压-最大:5.5 V 电源电压-最小:1.8 V 最大工作温度:+ 85 C 最小工作温度: 安装风格:Through Hole 封装 / 箱体:PDIP-8 封装:Tube
DS1315EN-5V 制造商:未知厂家 制造商全称:未知厂家 功能描述:Real-Time Clock
DS1315N-33 功能描述:实时时钟 RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 总线接口:I2C 日期格式:DW:DM:M:Y 时间格式:HH:MM:SS RTC 存储容量:64 B 电源电压-最大:5.5 V 电源电压-最小:1.8 V 最大工作温度:+ 85 C 最小工作温度: 安装风格:Through Hole 封装 / 箱体:PDIP-8 封装:Tube
DS1315N-33+ 功能描述:实时时钟 Phantom Time Chip RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 总线接口:I2C 日期格式:DW:DM:M:Y 时间格式:HH:MM:SS RTC 存储容量:64 B 电源电压-最大:5.5 V 电源电压-最小:1.8 V 最大工作温度:+ 85 C 最小工作温度: 安装风格:Through Hole 封装 / 箱体:PDIP-8 封装:Tube