Pin Plastic QFP, 44 P1.4 P1.5 P1.6 P1.7, Reset

¡ Semiconductor

MSM80C154S/83C154S

PIN CONFIGURATION (Continued)

44 P1.4

P1.5 1

P1.6 2

P1.7 3

RESET 4

P3.0/RXD 5

NC 6

P3.1/TXD 7

P3.2/INT0 8

P3.3/INT1 9

P3.4/T0 10

P3.5/T1/HPDI 11

P3.6/WR 12

43 P1.3

P3.7/RD 13

42 P1.2

XTAL2 14

41 P1.1

XTAL1 15

40 P1.0

VSS 16

39 NC

VSS 17

38 VCC

P2.0 18

37 P0.0

P2.1 19

36 P0.1

P2.2 20

35 P0.2

P2.3 21

34 P0.3

33P0.4

32P0.5

31P0.6

30P0.7

29EA

28NC

27ALE

26PSEN

25P2.7

24P2.6

23P2.5

P2.4 22

NC : No-connection pin

44-Pin Plastic QFP

263

Page 5

Image 5

Oki MSM83C154S, MSM80C154S manual Pin Plastic QFP, 44 P1.4 P1.5 P1.6 P1.7, Reset, 25 P2.7 24 P2.6 23 P2.5 P2.4

Contents

General Description Features¡SemiconductorSemiconductor MSM80C154S/83C154S Cmos 8-bit Microcontroller ¡ Semiconductor MSM80C154S/83C154S TIMER/COUNTER 0 Interrupt Signal2PORT Address Decoder Psen PIN Configuration TOP ViewPin Plastic DIP Pin Plastic QFP Reset44 P1.4 P1.5 P1.6 P1.7 25 P2.7 24 P2.6 23 P2.5 P2.4 Pin 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 Registers Diagram of Special Function Registers Gate Special Function Registers Timer mode register Tmod CPU is reset Power control register PconInterrupt signal Interrupt request flag for external interrupt Timer control register TconTcon TR1 TF0 TR0 IE1 IT1 IE0 IT0 Mode Serial port control register SconREN Interrupt control bit for serial port Interrupt enable register IEReserved bit. The output data is 1 if the bit is read Overall interrupt control bit Interrupt priority register IP Priority is assigned when bit isPriority interrupt circuit control bit PCT PT2 PT1 PX1 PT0 PX0 Bank Control register Iocon When this bit is set toIZC Received at a serial port Timer 2 control register T2CON Program Area Memory Maps BIT RAM HEX 0FF AddressingindirectregisterBANK3 BANK2 0FFH MSM80C154S/83C154S Diagram of Internal Data Memory RAM2FH 0FH Recommended Operating Conditions Absolute Maximum Ratings Port 0, ALE, Psen Electrical CharacteristicsDC Characteristics Maximum power supply current idle mode ICC mA Maximum power supply current normal operation ICC mA VO=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 Address Setup Time ALE Signal WidthFalling Edge Psen Signal Width To ALE Falling Edge Address Hold Time Instr External program memory read cyclePORT0 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 Oscillator Signal AC Characteristics Measuring ConditionsXTAL1 external clock input waveform conditions External Clock Drive Waveform 294 Basictiming TimingDiagram

Oki MSM83C154S manual Pin Plastic QFP, 44 P1.4 P1.5 P1.6 P1.7, Reset, 25 P2.7 24 P2.6 23 P2.5 P2.4

Models: MSM83C154S MSM80C154S