GDC21D601 Datasheet, PDF (99/189 Pages) Hynix Semiconductor – 32-Bit RISC MCU

GDC21D601
3. General Purpose Timer Unit Introduction
The GDC21D601 has a general-purpose timer unit (GPTU) with six channels of 16-bit timer. There are two
counter operation modes: a free running mode and a periodic mode. And each channel has independent operating
modes. There are common functions for each channel: counter operation, input capture, compare match, PWM,
and synchronized clear and write.
It is possible to select one of eight counter clock sources for all channels.
• Internal clock : counting at falling edge
BCLK / 2
BCLK / 4
BCLK / 16
BCLK / 64
• External clock: counting at rising, falling, or both edge that are user-selectable.
There are four kinds of counter clear sources which can be selected by user’s setting.
• None : never clear until overflow for free running mode
• GRA match or TPA input capture
• GRB match or TPB input capture
• Synchronous clear
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