Interrupt enable register IE | Oki MSM83C154S, MSM80C154S manual

¡ 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".

273

Image 15

Oki MSM83C154S manual Interrupt enable register IE, Interrupt control bit for serial port, Overall interrupt control bit

Contents

Cmos 8-bit Microcontroller FeaturesGeneral Description ¡SemiconductorSemiconductor MSM80C154S/83C154S ¡ Semiconductor MSM80C154S/83C154S Address Decoder SignalTIMER/COUNTER 0 Interrupt 2PORT PIN 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 P1.7 Pin 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 Registers Gate Special Function Registers Timer mode register Tmod Power control register Pcon Interrupt signalCPU is reset TR1 TF0 TR0 IE1 IT1 IE0 IT0 Timer control register TconInterrupt request flag for external interrupt Tcon Serial 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 read PCT PT2 PT1 PX1 PT0 PX0 Priority is assigned when bit isInterrupt priority register IP Priority interrupt circuit control bit Bank Received at a serial port When this bit is set toControl register Iocon IZC Timer 2 control register T2CON Program Area Memory Maps BANK2 HEX 0FF AddressingindirectregisterBIT RAM BANK3 0FH MSM80C154S/83C154S Diagram of Internal Data Memory RAM0FFH 2FH Recommended Operating Conditions Absolute Maximum Ratings Electrical Characteristics DC CharacteristicsPort 0, ALE, Psen Maximum power supply current idle mode ICC mA Maximum power supply current normal operation ICC mA Output 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 Width External program memory read cycle PORT0Instr External data memory access AC characteristics External data memory write cycle External data memory read cycle Parameter Symbol Min Max Unit Serial port I/O Extension Mode AC characteristics Input Data ALE Shift Clock External Clock Drive Waveform AC Characteristics Measuring ConditionsExternal Oscillator Signal XTAL1 external clock input waveform conditions 294 Basictiming TimingDiagram