Oki MSM80C154S manual Output High Voltage Port 1, 2, VO=0.1 Port 1, 2 Logical 1 to 0 Transition

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MSM80C154S/83C154S						¡ Semiconductor
DC Characteristics 2
				(VCC=2.2 to 4.0 V, VSS=0 V, Ta=-40 to +85°C)
								Meas-
Parameter		Symbol	Condition	Min.	Typ.	Max.	Unit	uring
								circuit
Input Low Voltage		VIL	—	–0.5	—	0.25 VCC–0.1	V
Input High Voltage		VIH	Except XTAL1, EA,	0.25 VCC+0.9	—	VCC+0.5	V
Input High Voltage		VIH	and RESET	0.25 VCC+0.9	—	VCC+0.5	V
			and RESET

Input High Voltage		VIH1	XTAL1, RESET, and EA	0.6 VCC+0.6	—	VCC+0.5	V
Output Low Voltage		VOL	IOL=10 mA	—	—	0.1	V
(PORT 1, 2, 3)		VOL	IOL=10 mA	—	—	0.1	V
(PORT 1, 2, 3)

Output Low Voltage		VOL1	IOL=20 mA	—	—	0.1	V
(PORT 0, ALE, PSEN)		VOL1	IOL=20 mA	—	—	0.1	V
(PORT 0, ALE, PSEN)								1

Output High Voltage		VOH	IOH=–5 mA	0.75 VCC	—	—	V
Output High Voltage
Output High Voltage
Output High Voltage

(PORT 1, 2, 3)		VOH1	IOH=–20 mA	0.75 VCC	—	—	V
(PORT 0, ALE, PSEN)		VOH1	IOH=–20 mA	0.75 VCC	—	—	V
(PORT 0, ALE, PSEN)

Logical 0 Input Current/			VI=0.1 V
Logical 1 Output Current/		IIL / IOH	VI=0.1 V	–5	–10	–40	mA
Logical 1 Output Current/		IIL / IOH	VO=0.1 V	–5	–10	–40	mA
(PORT 1, 2, 3)			VO=0.1 V					2
Logical 1 to 0 Transition		ITL	VI=1.9 V	—	–80	–300	mA	2
Logical 1 to 0 Transition
Output Current (PORT 1, 2, 3)
Output Current (PORT 1, 2, 3)

Input Leakage Current		ILI	VSS < VI < VCC	—	—	±10	mA	3
(PORT 0 floating, EA)		ILI	VSS < VI < VCC	—	—	±10	mA	3
(PORT 0 floating, EA)

RESET Pull-down Resistance		RRST	—	20	40	125	kW	2
Pin Capacitance		CIO	Ta=25°C, f=1 MHz	—	—	10	pF	—
Pin Capacitance		CIO	(except XTAL1)	—	—	10	pF	—
			(except XTAL1)

Power Down Current		IPD	—	—	1	10	mA	4

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Contents ¡SemiconductorSemiconductor MSM80C154S/83C154S FeaturesGeneral Description Cmos 8-bit MicrocontrollerMSM80C154S/83C154S ¡ Semiconductor2PORT SignalTIMER/COUNTER 0 Interrupt Address DecoderPsen PIN Configuration TOP ViewPin Plastic DIP 44 P1.4 P1.5 P1.6 P1.7 ResetPin Plastic QFP 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 Tcon Timer control register TconInterrupt request flag for external interrupt TR1 TF0 TR0 IE1 IT1 IE0 IT0Mode Serial port control register SconREN Reserved bit. The output data is 1 if the bit is read Interrupt enable register IEInterrupt control bit for serial port Overall interrupt control bitPriority interrupt circuit control bit Priority is assigned when bit isInterrupt priority register IP PCT PT2 PT1 PX1 PT0 PX0Bank IZC When this bit is set toControl register Iocon Received at a serial portTimer 2 control register T2CON Memory Maps Program AreaBANK3 HEX 0FF AddressingindirectregisterBIT RAM BANK22FH MSM80C154S/83C154S Diagram of Internal Data Memory RAM0FFH 0FH Absolute 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 Falling Edge Psen Signal Width ALE Signal WidthAddress Setup Time 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 DataXTAL1 external clock input waveform conditions AC Characteristics Measuring ConditionsExternal Oscillator Signal External Clock Drive WaveformBasictiming TimingDiagram 294