Samsung S3P80C5 User Manual page 238

S3P80C5/C80C5/C80C8
12
OVERVIEW
The S3P80C5/C80C5/C80C8 microcontroller has an 8-bit counter called counter A. Counter A, which can be
used to generate the carrier frequency, has the following components (see Figure 12-1):
— Counter A control register, CACON
— 8-bit down counter with auto-reload function
— Two 8-bit reference data registers, CADATAH and CADATAL
Counter A has two functions:
— As a normal interval timer, generating a counter A interrupt (IRQ4, vector ECH) at programmed time
intervals.
— To supply a clock source to the 16-bit timer/counter module, timer 1, for generating the timer 1 overflow
interrupt.
COUNTER A
COUNTER A
12-1