参数资料
型号: MB90423GAPMC
厂商: FUJITSU LTD
元件分类: 微控制器/微处理器
英文描述: 16-BIT, MROM, 16 MHz, MICROCONTROLLER, PQFP100
封装: 14 X 14 MM, 1.70 MM HEIGHT, 0.50 MM PITCH, PLASTIC, LQFP-100
文件页数: 36/88页
文件大小: 1991K
代理商: MB90423GAPMC
MB90420G/425G Series
DS07-13711-5E
41
5.
Real Time Watch Timer
The real time watch timer is composed of a real time watch 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 watch timer operation, a 4 MHz frequency is
assumed. The real time watch timer operates as a real world timer and provides real world time information.
Block diagram
INTE0 INT0
EN
CI
EN
LOAD
CO
OE
WOT
IRQ#30
CO
INTE1
ST
UPDT
INT1
INTE2 INT2
INTE3 INT3
Main oscillator clock
1/2 clock
divider
21-bit
prescaler
Sub second
register
Second
counter
Minute
counter
Hour
counter
6-bit
5-bit
Second/minute/hour register
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