C508 datasheet(32/93 Pages) INFINEON

32 / 93 page

C508

Data Sheet

2000-08

Timer/Counter 2 with Additional Compare/Capture/Reload

Timer 2 with additional compare/capture/reload features is one of the most powerful

peripheral units of the C508. It can be used for all kinds of digital signal generation and

event capturing like pulse generation, pulse width modulation, pulse width measuring

etc. Timer 2 is designed to support various automotive control applications as well as

industrial applications (frequency generation, digital-to-analog conversion, process

control etc.).

The C508 Timer 2 in combination with the compare/capture/reload registers allows the

following operating modes:

– Compare:

up to 4 PWM output signals with 65535 steps at maximum, and 300 ns

resolution

– Capture:

up to 4 high speed capture inputs with 300 ns resolution

– Reload:

modulation of timer 2 cycle time

The block diagram in Figure 11 shows the general configuration of Timer 2 with the

additional compare/capture/reload registers. The I/O pins which can be used for Timer 2

control are located as multifunctional port functions at Port 5.

Figure 11

Timer 2 Block Diagram

MCB04054

16-Bit

Comparator

T2CCL3/

T2CCH3

Input/

Output

Control

P5.0/

T2CC0/

INT3

16-Bit

Comparator

T2CCL2/

T2CCH2

16-Bit

Comparator

T2CCL1/

T2CCH1

16-Bit

Comparator

CRCL/

CRCH

Capture

Timer 2

TL2

TH2

Compare

TF2

Reload

Interrupt

Request

Reload

÷ 3

÷ 6

OSC

T2I0 = '1' and

T2I1 = '0'

T2PS

P5.1/

T2CC1/

INT4

P5.2/

T2CC2/

INT5

P5.3/

T2CC3/

INT6

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