參數(shù)資料
型號: ST92186B3BK
廠商: STMICROELECTRONICS
元件分類: 微控制器/微處理器
英文描述: 16-BIT, MROM, 24 MHz, MICROCONTROLLER, PDIP32
封裝: PLASTIC, SDIP-32
文件頁數(shù): 122/148頁
文件大小: 1664K
代理商: ST92186B3BK
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ST92186B - STANDARD TIMER (STIM)
7.2 STANDARD TIMER (STIM)
7.2.1 Introduction
The Standard Timer includes a programmable 16-
bit down counter and an associated 8-bit prescaler
with Single and Continuous counting modes capa-
bility.
The Standard Timer is composed of a 16-bit down
counter with an 8-bit prescaler. The input clock to
the prescaler is driven by an internal clock equal to
INTCLK divided by 4.
The Standard Timer End Of Count condition is
able to generate an interrupt which is connected to
one of the external interrupt channels.
The End of Count condition is defined as the
Counter Underflow, whenever 00h is reached.
Figure 42. Standard Timer Block Diagram
n
EXTERNAL
STP
8-BIT PRESCALER
STH,STL
16-BIT
STANDARD TIMER
CLOCK
INTERRUPT
CONTROL LOGIC
END OF
COUNT
INTS
INTERRUPT REQUEST
INTERRUPT
DOWNCOUNTER
INTCLK/4
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