參數(shù)資料
型號(hào): MB90F423GCPF
廠商: FUJITSU LTD
元件分類(lèi): 微控制器/微處理器
英文描述: 16-Bit Original Microcontroller
中文描述: 16-BIT, FLASH, 16 MHz, MICROCONTROLLER, PQFP100
封裝: 14 X 20 MM, 3.35 MM HEIGHT, 0.65 MM PITCH, PLASTIC, QFP-100
文件頁(yè)數(shù): 41/84頁(yè)
文件大小: 501K
代理商: MB90F423GCPF
MB90420G/425G Series
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
CO
OE
OE
WOT
IRQ#30
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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