Oki MSM80C154S, MSM83C154S manual Memory Maps, Program Area

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MSM80C154S/83C154S

¡ Semiconductor

MEMORY MAPS

Program Area

		65535	0FFFFH
	ROM AREA
EXTERNAL ROM AREA	MSM83C154S EXTERNAL	16384	4000H
EXTERNAL ROM AREA	MSM83C154S EXTERNAL	16383	3FFFH
MSM80C154S	INTERNAL ROM AREA	44	002CH
		43	002BH

	MSM83C154S
		0	7	6	5	4	3	2 1	0

Timer interrupt 2 start	43	002BH


S I/O interrupt start	35	0023H


Timer interrupt 1 start	27	001BH


External interrupt 1 start	19	0013H


Timer interrupt 0 start	11	000BH


External interrupt 0 start	3	0003H

	2	0002H

	1	0001H

CPU reset start	0	0000H

278

Image 20

Contents Features General Description¡SemiconductorSemiconductor MSM80C154S/83C154S Cmos 8-bit MicrocontrollerMSM80C154S/83C154S ¡ SemiconductorSignal TIMER/COUNTER 0 Interrupt2PORT Address DecoderPsen PIN Configuration TOP ViewPin Plastic DIP Reset Pin Plastic QFP44 P1.4 P1.5 P1.6 P1.7 25 P2.7 24 P2.6 23 P2.5 P2.4Pin Plastic Tqfp XTAL1 XTAL2 19 P3.7/RD 18 P3.6/WR Pin Plastic QFJ35 EA P3.0/RXD 34 NC 33 ALE P3.1/TXD ALE PIN DescriptionsMSM80C154S/83C154S¡ Semiconductor XTAL2 ¡ SemiconductorMSM80C154S/83C154SXTAL1 Diagram of Special Function Registers RegistersSpecial Function Registers Timer mode register Tmod GateCPU is reset Power control register PconInterrupt signal Timer control register Tcon Interrupt request flag for external interruptTcon TR1 TF0 TR0 IE1 IT1 IE0 IT0Mode Serial port control register SconREN Interrupt enable register IE Interrupt control bit for serial portReserved bit. The output data is 1 if the bit is read Overall interrupt control bitPriority is assigned when bit is Interrupt priority register IPPriority interrupt circuit control bit PCT PT2 PT1 PX1 PT0 PX0 Bank When this bit is set to Control register IoconIZC Received at a serial portTimer 2 control register T2CON Memory Maps Program AreaHEX 0FF Addressingindirectregister BIT RAMBANK3 BANK2MSM80C154S/83C154S Diagram of Internal Data Memory RAM 0FFH2FH 0FHAbsolute Maximum Ratings Recommended Operating ConditionsPort 0, ALE, Psen Electrical CharacteristicsDC Characteristics Maximum power supply current normal operation ICC mA Maximum power supply current idle mode ICC mAVO=0.1 Port 1, 2 Logical 1 to 0 Transition Output High Voltage Port 1, 2Logical 0 Input Current VI=0.1 Logical 1 Output Current 285 Output Measuring circuitsInput ALE Signal Width Address Setup TimeFalling Edge Psen Signal Width To ALE Falling Edge Address Hold TimeInstr External program memory read cyclePORT0 External data memory access AC characteristics External data memory read cycle External data memory write cycleSerial port I/O Extension Mode AC characteristics Parameter Symbol Min Max UnitALE Shift Clock Input DataAC Characteristics Measuring Conditions External Oscillator SignalXTAL1 external clock input waveform conditions External Clock Drive WaveformBasictiming TimingDiagram 294