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| 型号： | DS1557WP-120IND |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 13/17页 |
| 文件大小： | 0K |
| 描述： | IC RTC RAM Y2K 3.3V 120NS 34PCM |
| 标准包装： | 40 |
| 类型： | 时钟/日历 |
| 特点： | 警报器，闰年，NVSRAM，监视计时器，Y2K |
| 存储容量： | 512KB |
| 时间格式： | HH:MM:SS（24 小时） |
| 数据格式： | YY-MM-DD-dd |
| 接口： | 并联 |
| 电源电压： | 2.97 V ~ 3.63 V |
| 电压 - 电源，电池： | 3V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 34-PowerCap? 模块 |
| 供应商设备封装： | 34-PowerCap 模块 |
| 包装： | 管件 |
DS1557 4Meg, Nonvolatile, Y2K-Compliant Timekeeping RAM
5 of 17
CLOCK OPERATIONS
Table 2 and the following paragraphs describe the operation of RTC, alarm, and watchdog functions.
Table 2. Register Map
DATA
ADDRESS
B7
B6
B5
B4
B3
B2
B1
B0
FUNCTION/RANGE
7FFFFh
10 Year
Year
00-99
7FFFEh
X
10
Month
01-12
7FFFDh
X
10 Date
Date
01-31
7FFFCh
X
FT
X
Day
01-07
7FFFBh
X
10 Hour
Hour
00-23
7FFFAh
X
10 Minutes
Minutes
00-59
7FFF9h
OSC
10 Seconds
Seconds
00-59
7FFF8h
W
R
10 Century
Century
Control
00-39
7FFF7h
WDS
BMB4
BMB3
BMB2
BMB1
BMB0
RB1
RB0
Watchdog
7FFF6h
AE
Y
Abe
Y
Interrupts
7FFF5h
AM4
Y
10 Date
Date
Alarm Date
01-31
7FFF4h
AM3
Y
10 Hours
Hours
Alarm Hours
00-23
7FFF3h
AM2
10 Minutes
Minutes
Alarm Minutes
00-59
7FFF2h
AM1
10 Seconds
Seconds
Alarm Seconds
00-59
7FFF1h
Y
Unused
7FFF0h
WF
AF
0
BLF
0
Flags
X = Unused, Read/Writeable Under Write and Read Bit Control
AE = Alarm Flag Enable
Y = Unused, Read/Writeable Without Write and Read Bit Control
FT = Frequency Test Bit
OSC = Oscillator Start/Stop Bit
ABE = Alarm in Battery-BackUp Mode Enable
W = Write Bit
AM1 to AM4 = Alarm Mask Bits
R = Read Bit
WF = Watchdog Flag
WDS = Watchdog Steering Bit
AF = Alarm Flag
BMB0 to BMB4 = Watchdog Multiplier Bits
0 = 0 (Read Only)
RB0 to RB1 = Watchdog Resolution Bits
BLF = Battery Low Flag
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相关代理商/技术参数 |
参数描述 |
|---|---|
| DS1557WP-120IND+ | 功能描述:实时时钟 4M NV RAM Timekeeper 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 |
| DS1557WP-150 | 制造商:DALLAS 制造商全称:Dallas Semiconductor 功能描述:4MEG NV Y2KC Timekeeping RAM |
| DS1558 | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Watchdog Clock with NV RAM Control |
| DS1558B | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Watchdog Clock with NV RAM Control |
| DS1558D | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Watchdog Clock with NV RAM Control |
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