st92f124 STMicroelectronics, st92f124 Datasheet - Page 163

• Manufacturer Part Number: st92f124
• Description: 8/16-bit Single Voltage Flash Mcu Family With Ram, E3 Tmemulated Eeprom, Can 2.0b And J1850 Blpd
• Manufacturer: STMicroelectronics

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
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
STANDARD TIMER (STIM)
DOWNCOUNTER
STH,STL
16-BIT
COUNT
END OF
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