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參數(shù)資料
| 型號： | DS1557WP-120IND |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 13/17頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC RTC RAM Y2K 3.3V 120NS 34PCM |
| 標(biāo)準(zhǔn)包裝： | 40 |
| 類型： | 時(shí)鐘/日歷 |
| 特點(diǎn)： | 警報(bào)器，閏年，NVSRAM，監(jiān)視計(jì)時(shí)器，Y2K |
| 存儲容量： | 512KB |
| 時(shí)間格式： | HH:MM:SS（24 小時(shí)） |
| 數(shù)據(jù)格式： | YY-MM-DD-dd |
| 接口： | 并聯(lián) |
| 電源電壓： | 2.97 V ~ 3.63 V |
| 電壓 - 電源，電池： | 3V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 34-PowerCap? 模塊 |
| 供應(yīng)商設(shè)備封裝： | 34-PowerCap 模塊 |
| 包裝： | 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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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS1557WP-120IND+ | 功能描述:實(shí)時(shí)時(shí)鐘 4M NV RAM Timekeeper 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(shí)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(fēng)格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube |
| DS1557WP-150 | 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:4MEG NV Y2KC Timekeeping RAM |
| DS1558 | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Watchdog Clock with NV RAM Control |
| DS1558B | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Watchdog Clock with NV RAM Control |
| DS1558D | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Watchdog Clock with NV RAM Control |
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