SAB83C166W-5M データシートの表示（PDF） - Infineon Technologies

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SAB83C166W-5M

C16x-Family of High-Performance CMOS 16-Bit Microcontrollers

Infineon Technologies 

SAB 80C166W/83C166W

General Purpose Timer (GPT) Unit

The GPT unit represents a very flexible multifunctional timer/counter structure which may be used

for many different time related tasks such as event timing and counting, pulse width and duty cycle

measurements, pulse generation, or pulse multiplication.

The GPT unit incorporates five 16-bit timers which are organized in two separate modules, GPT1

and GPT2. Each timer in each module may operate independently in a number of different modes,

or may be concatenated with another timer of the same module.

Each of the three timers T2, T3, T4 of module GPT1 can be configured individually for one of three

basic modes of operation, which are Timer, Gated Timer, and Counter Mode. In Timer Mode, the

input clock for a timer is derived from the CPU clock, divided by a programmable prescaler, while

Counter Mode allows a timer to be clocked in reference to external events.

Pulse width or duty cycle measurement is supported in Gated Timer Mode, where the operation of

a timer is controlled by the ‘gate’ level on an external input pin. For these purposes, each timer has

one associated port pin (TxIN) which serves as gate or clock input. The maximum resolution of the

timers in module GPT1 is 400 ns (@ 20 MHz CPU clock).

Figure 6

Block Diagram of GPT1

Semiconductor Group

17

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