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参数资料
| 型号： | RTC-4543SB:B-0 |
| 元件分类： | 时钟/数据恢复及定时提取 |
| 英文描述： | REAL TIME CLOCK, PDSO18 |
| 封装： | SOP-18 |
| 文件页数： | 16/16页 |
| 文件大小： | 224K |
RTC - 4543 SA/SB
Page
6
ETM09E-02
6. Timer Data Organization
The counter data is BCD code.
Writes and reads are both performed on an LSB-first basis.
MSB
LSB
Second
( 0 to 59 )
FDT
s40
s20
s10
s8
s4
s2
s1
Minutes
( 0 to 59 )
*
mi40
mi20
mi10
mi8
mi4
mi2
mi1
Hour ( 0 to 23 )
*
h20
h10
h8
h4
h2
h1
Day of the week
( 1 to 7 )
*
w4
w2
w1
Day ( 1 to 31 )
*
d20
d10
d8
d4
d2
d1
Month ( 1 to 12 )
TM
*
mo10
mo8
mo4
mo2
mo1
Year ( 0 to 99 )
y80
y40
y20
y10
y8
y4
y2
y1
Calendar counter.
From 1 Jan 2001 to 31 Dec 2099, it is updated by an automatic calendar function.
If a year is 4 multiples, it is a leap year, then date is updated
in order to 28 Feb, 29 Feb, Mar 1.
Because there is the case that a leap year does not match when using data of year of except
the Christian era, please be careful.
Data of a day of the week run in cycles with 7 from 1.
A recommended example are
1=Sun, 2=Mon,,,6=Fri, 7=Sat.
Clock counter. Only 24 hours system is supported.
bits. These bits are used as memory.
TM bit. This is a test bit for shipping test. Always clear this bit to “0”.
FDT bit: Supply voltage detection bit
This bit is set to “1” when voltage of 1.7 ±0.3 V or less is detected between VDD and GND.
The FDT bit is cleared if all of the digits up to the year digits are read.
Although this bit can be both read and written, clear this bit to "0" in case of the write cycle.
Detection
pulse
VDD
Mode
FDT bit
VDET
0.5 s
Read
0.5 s
The supply voltage detection circuit monitors the supply voltage once every 0.5 seconds;
if the supply voltage is lower than the detection voltage value, the FDT bit is set to “1”.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| RTC4553 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:SERIAL-INTERFACE REAL TIME CLOCK MODULE |
| RTC-4553 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:SERIAL-INTERFACE REAL TIME CLOCK MODULE |
| RTC4553A | 制造商:未知厂家 制造商全称:未知厂家 功能描述:IC SMD |
| RTC-4553A | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Real-Time Clock |
| RTC-4553A2 | 功能描述:IC REAL TIME CLOCK 14-SOIC RoHS:否 类别:集成电路 (IC) >> 时钟/计时 - 实时时钟 系列:- 产品培训模块:Obsolescence Mitigation Program 标准包装:1 系列:- 类型:时钟/日历 特点:警报器，闰年，SRAM 存储容量:- 时间格式:HH:MM:SS（12/24 小时） 数据格式:YY-MM-DD-dd 接口:SPI 电源电压:2 V ~ 5.5 V 电压 - 电源，电池:- 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:8-WDFN 裸露焊盘 供应商设备封装:8-TDFN EP 包装:管件 |
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