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ST92F124 Datasheet(PDF) 163 Page - STMicroelectronics

No. de pieza ST92F124
Descripción Electrónicos  8/16-BIT SINGLE VOLTAGE FLASH MCU FAMILY WITH RAM, E3 TMEMULATED EEPROM, CAN 2.0B AND J1850 BLPD
PDF  426 Pages
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Fabricante Electrónico  STMICROELECTRONICS [STMicroelectronics]
Página de inicio  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST92F124 Datasheet(HTML) 163 Page - STMicroelectronics

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STANDARD TIMER (STIM)
10.2 STANDARD TIMER (STIM)
10.2.1 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 uses an output
(STOUT) pin. This pin may be independent pin or
connected as Alternate Function of an I/O port bit.
STOUT can be used to generate a Square Wave
or Pulse Width Modulated signal.
The Standard Timer is composed of a 16-bit down
counter with an 8-bit prescaler. The input clock to
the prescaler can be driven either by an internal
clock equal to INTCLK divided by 4, or by
CLOCK2/1024 derived directly from the external
oscillator, thus providing a stable time reference
independent from the PLL programming (refer to
Figure 90).
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 90. Standard Timer Block Diagram
n
STOUT
EXTERNAL
INPUT
&
CLOCK CONTROL LOGIC
INEN INMD1 INMD2
STP
8-BIT PRESCALER
STH,STL
16-BIT
STANDARD TIMER
CLOCK
OUTMD1 OUTMD2
OUTPUT CONTROL LOGIC
INTERRUPT
CONTROL LOGIC
END OF
COUNT
INTS
INTERRUPT REQUEST
CLOCK2/
INTERRUPT
DOWNCOUNTER
INTCLK/4
MUX
1024
9



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