參數(shù)資料
型號： SAK-XC2285M-104F80LAA
廠商： INFINEON TECHNOLOGIES AG
元件分類： 微控制器/微處理器
英文描述： RISC MICROCONTROLLER, PQFP144
封裝： 0.50 mm pitch, GREEN, PLASTIC, LQFP-144
文件頁數(shù)： 105/142頁
文件大?。?/td> 1112K
代理商： SAK-XC2285M-104F80LAA
XC2287M, XC2286M, XC2285M
XC2000 Family Derivatives / Base Line
Functional Description
Data Sheet
65
V2.0, 2009-03
3.8
Capture/Compare Unit (CAPCOM2)
The CAPCOM2 unit supports generation and control of timing sequences on up to
16 channels with a maximum resolution of one system clock cycle (eight cycles in
staggered mode). The CAPCOM2 unit is typically used to handle high-speed I/O tasks
such as pulse and waveform generation, pulse width modulation (PWM), digital to
analog (D/A) conversion, software timing, or time recording with respect to external
events.
Two 16-bit timers (T7/T8) with reload registers provide two independent time bases for
the capture/compare register array.
The input clock for the timers is programmable to a number of prescaled values of the
internal system clock. It may also be derived from an overflow/underflow of timer T6 in
module GPT2. This provides a wide range for the timer period and resolution while
allowing precise adjustments for application-specific requirements. An external count
input for CAPCOM2 timer T7 allows event scheduling for the capture/compare registers
with respect to external events.
The capture/compare register array contains 16 dual purpose capture/compare
registers. Each may be individually allocated to either CAPCOM2 timer T7 or T8 and
programmed for a capture or compare function.
Each register of the CAPCOM2 module has one port pin associated with it.A port pin is
associated with each register of the CAPCOM2 module. This serves as an input pin to
trigger the capture function or as an output pin to indicate the occurrence of a compare
event.
Table 9
Compare Modes (CAPCOM2)
Compare Modes
Function
Mode 0
Interrupt-only compare mode;
Several compare interrupts per timer period are possible
Mode 1
Pin toggles on each compare match;
Several compare events per timer period are possible
Mode 2
Interrupt-only compare mode;
Only one compare interrupt per timer period is generated
Mode 3
Pin set ‘1’ on match; pin reset ‘0’ on compare timer overflow;
Only one compare event per timer period is generated
Double Register
Mode
Two registers operate on one pin;
Pin toggles on each compare match;
Several compare events per timer period are possible
Single Event Mode
Generates single edges or pulses;
Can be used with any compare mode
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