C167CS datasheet(229/517 Pages) INFINEON

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C167CS

Derivatives

The General Purpose Timer Units

User’s Manual

10-1

V2.0, 2000-07

The General Purpose Timer Units

The General Purpose Timer Units GPT1 and GPT2 represent very flexible

multifunctional timer structures which may be used for timing, event counting, pulse

width measurement, pulse generation, frequency multiplication, and other purposes.

They incorporate five 16-bit timers that are grouped into the two timer blocks GPT1 and

GPT2.

Block GPT1 contains 3 timers/counters with a maximum resolution of 16 TCL, while

block GPT2 contains 2 timers/counters with a maximum resolution of 8 TCL and a 16-

bit Capture/Reload register (CAPREL). Each timer in each block may operate

independently in a number of different modes such as gated timer or counter mode, or

may be concatenated with another timer of the same block. The auxiliary timers of GPT1

may optionally be configured as reload or capture registers for the core timer. In the

GPT2 block, the additional CAPREL register supports capture and reload operation with

extended functionality, and its core timer T6 may be concatenated with timers of the

CAPCOM units (T0, T1, T7, and T8). Each block has alternate input/output functions and

specific interrupts associated with it.

10.1

Timer Block GPT1

From a programmer’s point of view, the GPT1 block is composed of a set of SFRs as

summarized below. Those portions of port and direction registers which are used for

alternate functions by the GPT1 block are shaded.

Figure 10-1

SFRs and Port Pins Associated with Timer Block GPT1

MCA04371

ODP3

DP3

T2CON

T2IC

T4IC

Ports & Direction Control

Alternate Functions

Data Registers

Control Registers

Interrupt Control

Port 5 Data Register

ODP3

Port 3 Open Drain Control Register

DP3

Port 3 Direction Control Register

Port 3 Data Register

T2CON GPT1 Timer 2 Control Register

T3CON GPT1 Timer 3 Control Register

T4CON GPT1 Timer 4 Control Register

P5DIDIS

Port 5 Digital Input Disable Register

GPT1 Timer 2 Register

GPT1 Timer 3 Register

GPT1 Timer 4 Register

T2IC

GPT1 Timer 2 Interrupt Control Register

T3IC

GPT1 Timer 3 Interrupt Control Register

T4IC

GPT1 Timer 4 Interrupt Control Register

T3IC

T2IN/P3.7 T2EUD/P5.15

T3IN/P3.6 T3EUD/P3.4

T4IN/P3.5 T4EUD/P5.14

T3OUT/P3.3

T3CON

P5DIDIS

T4CON

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