Hyundai GMS90X52C, GMS90X51C, GMS90X54C user manual Oscillator Circuit

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HYUNDAI MicroElectronics

GMS90X5XC Series

OSCILLATOR CIRCUIT

CRYSTAL OSCILLATOR MODE

DRIVING FROM EXTERNAL SOURCE

C2

XTAL2

P-LCC-44/Pin 20

P-DIP-40/Pin 18

M-QFP-44/Pin 14

C1

XTAL1

P-LCC-44/Pin 21

P-DIP-40/Pin 19

M-QFP-44/Pin 15

N.C.

External Oscillator Signal

XTAL2

P-LCC-44/Pin 20

P-DIP-40/Pin 18

M-QFP-44/Pin 14

XTAL1

P-LCC-44/Pin 21

P-DIP-40/Pin 19

M-QFP-44/Pin 15

C1, C2 = 30pF ±10pF for Crystals

For Ceramic Resonators, contact resonator manufacturer.

Figure 12. Recommended Oscillator Circuits

Oscillation circuit is designed to be used either with a ceramic resonator or crystal oscillator. Since each crystal and ceramic resonator have their own characteristics, the user should consult the crystal manufacturer for ap- propriate values of external components.

42	Jan. 2001 Ver 1.0

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Contents GMS90X51C GMS90X52C GMS90X54C Page Mask Block Diagram GMS90C51CGMS90C52C/54C GMS90L52C/54CLow voltage versions PIN Configuration Plcc Pin Configuration top viewPdip Pin Configuration top view EA / VPP ALE / ProgMqfp Pin Configuration top view Logic Symbol PIN Definitions and Functions XTAL2Reset Symbol FunctionProgram Store Enable Pin NumberCircuit ground potential Address Latch EnableNo connection Block Diagram of the GMS90X5XC series Functional DescriptionCPU Special Function Register PSWSpecial Function Registers FFH D8H C0HD0H E0HF0H Contents of SFRs, SFRs in Numeric Order Address RegisterE0H D0HGF1 GF0 PDE Idle C8H T2CON TF2 EXF2 Rclk Tclk EXEN2 TR2 CP/RL2 X2 Mode Clock Generation DiagramMode Swithcing Waveforms Tmod Timer / Counter 0Timer/Counter 0 and 1 Operating Modes Description Input ClockP1.1 Remarks Input Clock TimerTimer/Counter 2 Operating Modes T2EXBaudrate Description Serial Interface UsartUsart Operating Modes SM0 SM1Interrupt System Interrupt Request SourcesInterrupt Priority-Within-Level Interrupt Source Power Saving Modes Electrical Characteristics Absolute Maximum RatingsParameter Symbol Limit Values Unit Test Conditions Min DC Characteristics for GMS90C51C/52C/54CPower supply current Hyundai MicroElectronics DC Characteristics for GMS90L51C/52C/54C VCC= 3.3V + 0.3V, -0.6V VSS=0V TA= 0C to 70CAC Characteristics for GMS90X5XC series 12MHz version Explanation of the AC SymbolsExternal Program Memory Characteristics GMS90X5XC Series Advance Information 12MHz External Clock Drive AC Characteristics for GMS90X5XC series 16MHz version Advance Information 16MHz External Clock Drive AC Characteristics for GMS90X5XC series 24MHz version Advance Information 24MHz External Clock Drive AC Characteristics for GMS90X5XC series 33MHz version Advance Information 33MHz External Clock Drive AC Characteristics for GMS90X5XC series 40MHz version Advance Information 40MHz External Clock Drive External Program Memory Read Cycle External Data Memory Read Cycle AC Testing Input, Output Waveforms Oscillator Circuit Plastic Package P-LCC-44 44PLCCPlastic Package P-DIP-40 Plastic Package P-MPQF-44 GMS90X5XC Series GMS90X5XC-GC ROM Protection