參數(shù)資料
型號(hào): MB90F455SPMT
廠商: FUJITSU LTD
元件分類: 微控制器/微處理器
英文描述: 16-bit Proprietary Microcontroller
中文描述: 16-BIT, FLASH, 16 MHz, MICROCONTROLLER, PQFP48
封裝: 7 X 7 MM, 1.70 MM HEIGHT, 0.50 MM PITCH, PLASTIC, LQFP-48
文件頁數(shù): 36/78頁
文件大?。?/td> 680K
代理商: MB90F455SPMT
MB90455 Series
36
5.
16-bit Reload Timer
The 16-bit reload timer has the following functions:
Count clock is selectable among 3 internal clocks and external event clock.
Activation trigger is selectable between software trigger and external trigger.
Generation of CPU interrupt is allowed upon occurrence of underflow on 16-bit timer register. Available as an
interval timer using the interrupt function.
When underflow of 16-bit timer register (TMR) occurs, one of two reload modes is selectable between one-
shot mode that halts counting operation of TMR, and reload mode that reloads 16-bit reload register value to
TMR, continuing TMR counting operation.
The 16-bit reload timer is ready for expanded intelligent I/O service (EI
2
OS).
MB90455 series device has 2 channels of built-in 16-bit reload timer.
Operation mode of 16-bit reload timer
Count clock
Internal clock mode
The 16-bit reload timer is set to internal clock mode, by setting count clock selection bit (TMCSR: CSL1, CSL0)
to “00
B
”, “01
B
”, “10
B
”.
In the internal clock mode, the counter decrements in synchronization with the internal clock.
Three types of count clock cycles are selectable by count clock selection bit (TMCSR: CSL1, CSL0) in timer
control status register.
Edge detection of software trigger or external trigger is specified as an activation trigger.
Activation trigger
Operation upon underflow
Internal clock mode
Software trigger, external trigger
One-shot mode, reload mode
Event count mode
Software trigger
One-shot mode, reload mode
相關(guān)PDF資料
PDF描述
MB90F456 16-bit Proprietary Microcontroller
MB90F456PMT 16-bit Proprietary Microcontroller
MB90F456S 16-bit Proprietary Microcontroller
MB90F456SPMT 16-bit Proprietary Microcontroller
MB90F457 16-bit Proprietary Microcontroller
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