參數(shù)資料
型號(hào)： S80C32-L16D
廠商： ATMEL CORP
元件分類： 微控制器/微處理器
英文描述： 8-BIT, 16 MHz, MICROCONTROLLER, PQCC44
封裝： PLASTIC, LCC-44
文件頁數(shù)： 77/143頁
文件大小： 4602K
代理商： S80C32-L16D
39
XMEGA A3BU [DATASHEET]
8362F–AVR–02/2013
21.
RTC32 – 32-bit Real-Time Counter
21.1
Features
32-bit resolution
One 32-bit Compare register
One 32-bit Period register
Clear Timer on overflow
Optional Interrupt/ Event on overflow and compare match
Selectable clock reference
1.024kHz
1Hz
Isolated VBAT power domain with dynamic switch over from/to VCC power domain’
21.1.1 Overview
The 32-bit real-time counter (RTC) is a counter that typically runs continuously, including in low-power sleep modes, to
keep track of time. It can wake up the device from sleep modes and/or interrupt the device at regular intervals.
The reference clock is generated from a high accuracy 32.768kHz crystal, and the design is optimized for low power
consumption. The RTC typically operate in low power sleep modes, keeping track of time and waking up the device at
regular intervals.
The RTC input clock can be taken from a 1.024kHz or 1Hz prescaled output from the 32.768kHz reference clock. The
RTC will give a compare interrupt request and/or event when the counter value equals the Compare register value. The
RTC will give an overflow interrupt request and/or event when the counter value equals the Period register value.
Counter overflow will also reset the counter value to zero.
The 32-bit Real Time Counter (RTC) must be clocked from the 1Hz output of a 32.768kHz crystal oscillator connected
between the TOSC1 and TOSC2 pins when running from VBAT.
Figure 21-1. Real Time Counter overview.
32.768kHz
Crystal Osc
TOSC1
TOSC2
DIV32
CNT
PER
COMP
=
Compare
Match
Overflow
DIV1024
1.024kHz
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
S80C32-L16R 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Bit Microcontroller
S80C376CB8 WAF 制造商:Intel 功能描述:
S80C42 制造商:Intel 功能描述:
S80C51 WAF 制造商:Intel 功能描述:
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