datasheetbank_Logo
Integrated circuits, Transistor, Semiconductors Search and Datasheet PDF Download Site

ST10F269Z1Q6 View Datasheet(PDF) - STMicroelectronics

Part Name
Description
View to exact match
ST10F269Z1Q6 Datasheet PDF : 184 Pages
First Prev 41 42 43 44 45 46 47 48 49 50 Next Last
ST10F269
9 - CAPTURE/COMPARE (CAPCOM) UNITS
9 - CAPTURE/COMPARE (CAPCOM) UNITS
The ST10F269 has two 16 channels CAPCOM
units as described in Figure 12. These support
generation and control of timing sequences on up
to 32 channels with a maximum resolution of
200ns at 40MHz CPU clock on PQFP144 devices
and 250ns at 32MHz CPU clock on TQFP144
devices. The CAPCOM units are typically used to
handle high speed I/O tasks such as pulse and
waveform generation, pulse width modulation
(PMW), Digital to Analog (D/A) conversion,
software timing, or time recording relative to
external events.
Four 16-bit timers (T0/T1, T7/T8) with reload
registers provide two independent time bases for
the capture/compare register array (See Figures
Figure 13 and Figure 14).
The input clock for the timers is programmable to
several prescaled values of the internal system
clock, or may be derived from an overflow/
Figure 12 : CAPCOM Unit Block Diagram
underflow of timer T6 in module GPT2. This
provides a wide range of variation for the timer
period and resolution and allows precise
adjustments to application specific requirements.
In addition, external count inputs for CAPCOM
timers T0 and T7 allow event scheduling for the
capture/compare registers relative to external
events.
Each of the two capture/compare register arrays
contain 16 dual purpose capture/compare
registers, each of which may be individually
allocated to either CAPCOM timer T0 or T1 (T7 or
T8, respectively), and programmed for capture or
compare functions. Each of the 32 registers has
one associated port pin which serves as an input
pin for triggering the capture function, or as an
output pin to indicate the occurrence of a compare
event. Figure 12 shows the basic structure of the
two CAPCOM units.
Reload Register TxREL
x = 0, 7
CPU
Clock
2n n = 3...10
TxIN Pin
GPT2 Timer T6
Over / Underflow
Pin
16
Capture inputs
Compare outputs
CPU
Clock
Pin
2n n = 3...10
GPT2 Timer T6
Over / Underflow
Tx
Input
Control
Mode
Control
(Capture
or
Compare)
Ty
Input
Control
CAPCOM Timer Tx
Interrupt
Request
Sixteen 16-bit
(Capture/Compare)
Registers
16
Capture / Compare*
Interrupt Requests
CAPCOM Timer Ty
Interrupt
Request
Reload Register TyREL
y = 1, 8
49/184
 

Share Link: 

datasheetbank.com [ Privacy Policy ] [ Request Datasheet ] [ Contact Us ]