參數(shù)資料
型號(hào): MB90420G
廠商: Fujitsu Limited
英文描述: Quadruple 2-Input Positive-OR Gate 14-CFP -55 to 125
中文描述: 16位微控制器原件
文件頁(yè)數(shù): 41/99頁(yè)
文件大小: 1706K
代理商: MB90420G
MB90420G/5G (A) Series
41
5.
Real Time Clock Timer
The real time clock timer is composed of a real time clock timer control register, sub second data register, second/
minute/hour data registers, 1/2 clock divider, 21-bit prescaler and second/minute/hour counters. Because the
MCU oscillation frequency operates on a given real time clock timer operation, a 4 MHz frequency is assumed.
The real time clock timer operates as a real world timer and provides real world time information.
Block diagram
INTE0 INT0
EN
CI
EN
LOAD
CO
CO
OE
OE
WOT
IRQ
CO
CO
INTE1
ST
UPDT
INT1
INTE2 INT2
INT3
INT3
Main oscillator clock
1/2 clock
divider
21-bit
prescaler
Sub second
register
Second
counter
Minute
counter
Hour
counter
6-bit
6-bit
5-bit
Second/minute/hour register
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