s3c72m9 Samsung Semiconductor, Inc., s3c72m9 Datasheet - Page 249

• Manufacturer Part Number: s3c72m9
• Description: The S3c72m5/s3c72m7/s3c72m9 Single-chip Cmos Microcontroller Has Been Designed For High Performance Using Samsung S
• Manufacturer: Samsung Semiconductor, Inc.

S3C72M5/C72M7/C72M9/P72M9 (Preliminary Spec)
TIMERS and TIMER/COUNTERS
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TIMERS and TIMER/COUNTERS
OVERVIEW
The S3C72M5/C72M7/C72M9 microcontroller has four timer and timer/counter modules:
— 8-bit basic timer (BT)
— 8-bit timer/counter (TC0)
— 16-bit timer/counter (TC1, configurable as two 8-bit timer 1A/1B)
— Watch timer (WT)
The 8-bit basic timer (BT) is the microcontroller's main interval timer and watch-dog timer. It generates an interrupt
request at a fixed time interval when the appropriate modification is made to its mode register. The basic timer is
also used to determine clock oscillation stabilization time when stop mode is released by an interrupt and after a
RESET.
The 8-bit timer/counter (TC0) and the 16-bit timer/counter (TC1) are programmable timer/counters that are used
primarily for event counting and for clock frequency modification and output. In addition, TC1 generates a clock
signal that can be used by the serial I/O interface.
The watch timer (WT) module consists of an 8-bit watch timer mode register, a clock selector, and a frequency
divider circuit. Watch timer functions include real-time and watch-time measurement, main and subsystem clock
interval timing, buzzer output generation. It also generates a clock signal for the LCD controller.
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