Oki MSM80C154S, MSM83C154S manual Measuring circuits, Input, Output

Page 28

MSM80C154S/83C154S

¡ Semiconductor

Measuring circuits

 

 

1

 

 

 

 

 

 

 

 

2

 

 

VCC

 

(*2)

 

 

 

(*1)

 

 

VCC

VIH

(*3)

INPUT

OUTPUT

 

 

 

 

 

 

INPUT

OUTPUT

VIL

V

A

IO

V

A

 

 

VSS

 

 

 

 

 

 

 

 

VSS

 

 

 

 

 

 

 

 

 

 

 

 

3

 

 

 

 

 

 

 

 

4

 

 

 

 

 

 

 

 

 

 

 

A

 

 

VCC

 

(*2)

 

 

 

 

 

 

VCC

VIH

(*3)

INPUT

OUTPUT

 

 

 

VIH

(*3)

INPUT

OUTPUT

VIL

V

A

 

VIL

 

 

 

 

VSS

 

 

 

 

 

 

VSS

 

 

 

 

 

 

 

 

 

 

*1: Repeated for specified input pins.

*2: Repeated for specified output pins.

*3: Input logic for specified status.

286

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Contents Features General Description¡SemiconductorSemiconductor MSM80C154S/83C154S Cmos 8-bit MicrocontrollerMSM80C154S/83C154S ¡ SemiconductorSignal TIMER/COUNTER 0 Interrupt2PORT Address DecoderPin Plastic DIP PIN Configuration TOP ViewPsen 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 35 EA P3.0/RXD 34 NC 33 ALE P3.1/TXD Pin Plastic QFJXTAL1 XTAL2 19 P3.7/RD 18 P3.6/WR MSM80C154S/83C154S¡ Semiconductor PIN DescriptionsALE XTAL1 ¡ SemiconductorMSM80C154S/83C154SXTAL2 Diagram of Special Function Registers RegistersSpecial Function Registers Timer mode register Tmod GateInterrupt signal Power control register PconCPU is reset Timer control register Tcon Interrupt request flag for external interruptTcon TR1 TF0 TR0 IE1 IT1 IE0 IT0REN Serial port control register SconMode 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 PX0Bank 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 ConditionsDC Characteristics Electrical CharacteristicsPort 0, ALE, Psen Maximum power supply current normal operation ICC mA Maximum power supply current idle mode ICC mALogical 0 Input Current VI=0.1 Logical 1 Output Current Output High Voltage Port 1, 2VO=0.1 Port 1, 2 Logical 1 to 0 Transition 285 Input Measuring circuitsOutput ALE Signal Width Address Setup TimeFalling Edge Psen Signal Width To ALE Falling Edge Address Hold TimePORT0 External program memory read cycleInstr 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
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