Oki MSM83C154S, MSM80C154S Interrupt enable register IE, Interrupt control bit for serial port

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¡ Semiconductor

MSM80C154S/83C154S

Interrupt enable register (IE)

NAME

ADDRESS

MSB

LSB

7

6

5

4

3

2

1

0

IE

0A8H

EA

—

ET2

ES

ET1

EX1

ET0

EX0

BIT LOCATION

FLAG

FUNCTION

IE.0

EX0

Interrupt control bit for external interrupt 0.

Interrupt disabled when bit is "0".

Interrupt enabled when bit is "1".

IE.1

ET0

Interrupt control bit for timer interrupt 0.

Interrupt disabled when bit is "0".

Interrupt enabled when bit is "1".

IE.2

EX1

Interrupt control bit for external interrupt 1.

Interrupt disabled when bit is "0".

Interrupt enabled when bit is "1".

IE.3

ET1

Interrupt control bit for timer interrupt 1.

Interrupt disabled when bit is "0".

Interrupt enabled when bit is "1".

IE.4

ES

Interrupt control bit for serial port.

Interrupt disabled when bit is "0".

Interrupt enabled when bit is "1".

IE.5

ET2

Interrupt control bit for timer interrupt 2.

Interrupt disabled when bit is "0".

Interrupt enabled when bit is "1".

IE.6

—

Reserved bit. The output data is "1" if the bit is read.

IE.7

EA

Overall interrupt control bit.

All interrupts are disabled when bit is "0".

All interrupts are controlled by IE.0 thru IE.5 when bit is "1".

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Image 15

Contents Cmos 8-bit Microcontroller FeaturesGeneral Description ¡SemiconductorSemiconductor MSM80C154S/83C154S¡ Semiconductor MSM80C154S/83C154SAddress Decoder SignalTIMER/COUNTER 0 Interrupt 2PORTPIN Configuration TOP View Pin Plastic DIPPsen 25 P2.7 24 P2.6 23 P2.5 P2.4 ResetPin Plastic QFP 44 P1.4 P1.5 P1.6 P1.7Pin Plastic Tqfp Pin Plastic QFJ 35 EA P3.0/RXD 34 NC 33 ALE P3.1/TXDXTAL1 XTAL2 19 P3.7/RD 18 P3.6/WR PIN Descriptions MSM80C154S/83C154S¡ SemiconductorALE ¡ SemiconductorMSM80C154S/83C154S XTAL1XTAL2 Registers Diagram of Special Function RegistersGate Special Function Registers Timer mode register TmodPower control register Pcon Interrupt signalCPU is reset TR1 TF0 TR0 IE1 IT1 IE0 IT0 Timer control register TconInterrupt request flag for external interrupt TconSerial port control register Scon RENMode Overall interrupt control bit Interrupt enable register IEInterrupt control bit for serial port Reserved bit. The output data is 1 if the bit is readPCT PT2 PT1 PX1 PT0 PX0 Priority is assigned when bit isInterrupt priority register IP Priority interrupt circuit control bitBank Received at a serial port When this bit is set toControl register Iocon IZCTimer 2 control register T2CON Program Area Memory MapsBANK2 HEX 0FF AddressingindirectregisterBIT RAM BANK30FH MSM80C154S/83C154S Diagram of Internal Data Memory RAM0FFH 2FHRecommended Operating Conditions Absolute Maximum RatingsElectrical Characteristics DC CharacteristicsPort 0, ALE, Psen Maximum power supply current idle mode ICC mA Maximum power supply current normal operation ICC mAOutput High Voltage Port 1, 2 Logical 0 Input Current VI=0.1 Logical 1 Output CurrentVO=0.1 Port 1, 2 Logical 1 to 0 Transition 285 Measuring circuits InputOutput To ALE Falling Edge Address Hold Time ALE Signal WidthAddress Setup Time Falling Edge Psen Signal WidthExternal program memory read cycle PORT0Instr External data memory access AC characteristics External data memory write cycle External data memory read cycleParameter Symbol Min Max Unit Serial port I/O Extension Mode AC characteristicsInput Data ALE Shift ClockExternal Clock Drive Waveform AC Characteristics Measuring ConditionsExternal Oscillator Signal XTAL1 external clock input waveform conditions294 Basictiming TimingDiagram