參數(shù)資料
型號(hào): LV8572AN
廠商: NATIONAL SEMICONDUCTOR CORP
元件分類: XO, clock
英文描述: LV8572A Low Voltage Real Time Clock (RTC)
中文描述: 0 TIMER(S), REAL TIME CLOCK, PDIP24
封裝: PLASTIC, DIP-24
文件頁數(shù): 6/20頁
文件大?。?/td> 329K
代理商: LV8572AN
Functional Description
The LV8572A contains a fast access real time clock, inter-
rupt control logic, power fail detect logic, and CMOS RAM.
All functions of the RTC are controlled by a set of seven
registers. A simplified block diagram that shows the major
functional blocks is given in Figure 1.
The blocks are described in the following sections:
1. Real Time Clock
2. Oscillator Prescaler
3. Interrupt Logic
4. Power Failure Logic
5. Additional Supply Management
The memory map of the RTC is shown in the memory ad-
dressing table. The memory map consists of two 31 byte
pages with a main status register that is common to both
pages. A control bit in the Main Status Register is used to
select either page. Figure 2 shows the basic concept.
Page 0 contains all the clock timer functions, while page 1
has scratch pad RAM. The control registers are split into
two separate blocks to allow page 1 to be used entirely as
scratch pad RAM. Again a control bit in the Main Status
Register is used to select either control register block.
TL/F/11417–7
FIGURE 2. LV8572A Internal Memory Map
6
相關(guān)PDF資料
PDF描述
LV8573A LV8573A Low Voltage Real Time Clock (RTC)
LV8573AM LV8573A Low Voltage Real Time Clock (RTC)
LV8573AN LV8573A Low Voltage Real Time Clock (RTC)
LV8573AV LV8573A Low Voltage Real Time Clock (RTC)
LV8573M LV8573A Low Voltage Real Time Clock (RTC)
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LV8572AVX 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Real-Time Clock
LV8573A 制造商:NSC 制造商全稱:National Semiconductor 功能描述:LV8573A Low Voltage Real Time Clock (RTC)
LV8573AM 制造商:NSC 制造商全稱:National Semiconductor 功能描述:LV8573A Low Voltage Real Time Clock (RTC)
LV8573AN 制造商:NSC 制造商全稱:National Semiconductor 功能描述:LV8573A Low Voltage Real Time Clock (RTC)
LV8573AV 制造商:NSC 制造商全稱:National Semiconductor 功能描述:LV8573A Low Voltage Real Time Clock (RTC)