ST92F150-EVAL STMicroelectronics, ST92F150-EVAL Datasheet - Page 164
ST92F150-EVAL
Manufacturer Part Number
ST92F150-EVAL
Description
BOARD EVALUATION FOR ST9 SERIES
Manufacturer
STMicroelectronics
Specifications of ST92F150-EVAL
Processor To Be Evaluated
ST90158 and ST92F1x Daughter Board
Interface Type
I2C
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Other names
497-2905
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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
Figure 90. Standard Timer Block Diagram
n
164/429
9
EXTERNAL
INTERRUPT
CLOCK2/
STOUT
1024
CLOCK CONTROL LOGIC
INEN INMD1 INMD2
INPUT
&
INTCLK/4
MUX
CONTROL LOGIC
INTERRUPT
STANDARD TIMER
CLOCK
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
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.
90).
OUTPUT CONTROL LOGIC
INTS
INTERRUPT REQUEST
8-BIT PRESCALER
OUTMD1 OUTMD2
STP
DOWNCOUNTER
STH,STL
16-BIT
END OF
COUNT
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