Samsung KS57C2308 Manual

Contents

KS57C2308/P2308/C2316/P2316 TIMERS and TIMER/COUNTERS11-3Table 11-1. Basic Timer Register OverviewRegisterNameType Description Size RAMAddressAddressingModeResetValueBMOD Control Controls the clock frequency(mode) of the basic timer; also, theoscillation stabilization interval afterpower-down mode release or RESET4-bit F85H 4-bit write-only;BMOD.3: 1-bitwrite-only“0”BCNT Counter Counts clock pulses matching theBMOD frequency setting8-bit F86H–F87H 8-bit read-only“U”(note)WDMOD Control Controls watchdog timer operation. 8-bit F98H–F99H 8-bit write-only A5HWDTCF Control Clear the watchdog timer’s counter. 1-bit F9AH.3 1-bit write-only “0”NOTE: “U” means that the value is undetermined after a RESET."Clear" SignalBitsInstructionClockSelector IRQBInterruptRequestOverflowCPU Clock Start Signals(By Interrupts)1-Bit R/WClock InputClearIRQB4ClearBCNTBMOD.3BMOD.2BMOD.1BMOD.08WDTCNT ResetGeneration8WDTCF DELAYWAITRESETStopBitsInstructionRESETCClearOverflow1 pulse period = BT input clock 2 (1/2 duty)3-Bit Counter8NOTE: WAIT means stabilization timeafter or Stabilizationtime after STOP mode release.RESETBit5(By )BCNTWDMODRESETFigure 11-1. Basic Timer Circuit Diagram