Hyundai GMS90X51C, GMS90X52C, GMS90X54C user manual Advance Information 40MHz External Clock Drive

Page 42

HYUNDAI MicroElectronics

GMS90X5XC Series

AC Characteristics for GMS90X5XC series (40MHz)

External Data Memory Characteristics

at 40 MHz Clock

Variable Clock

Parameter

Symbol

1/tCLCL = 3.5 to 40MHz

Unit

Min.

Max.

Min.

Max.

pulse width

tRLRH

120

-

6tCLCL-30

-

ns

RD

pulse width

tWLWH

120

-

6tCLCL-30

-

ns

WR

Address hold after ALE

tLLAX2

10

-

tCLCL-15

-

ns

to valid data in

tRLDV

-

75

-

5tCLCL-50

ns

RD

Data hold after

tRHDX

0

-

0

-

ns

RD

Data float after

tRHDZ

-

38

-

2tCLCL-12

ns

RD

ALE to valid data in

tLLDV

-

150

-

8tCLCL-50

ns

Address to valid data in

tAVDV

-

150

-

9tCLCL-75

ns

ALE to

or

tLLWL

60

90

3tCLCL-15

3tCLCL+15

ns

WR

RD

Address valid to

or

tAVWL

70

-

4tCLCL-30

-

ns

WR

RD

or

high to ALE high

tWHLH

10

40

tCLCL-15

tCLCL+15

ns

WR

RD

Data valid to

transition

tQVWX

5

-

tCLCL-20

-

ns

WR

Data setup before

tQVWH

125

-

7tCLCL-50

-

ns

WR

Data hold after

tWHQX

5

-

tCLCL-20

-

ns

WR

Address float after

tRLAZ

-

0

-

0

ns

RD

Advance Information (40MHz)

External Clock Drive

Variable Oscillator

Parameter

Symbol

(Freq. = 3.5 to 40MHz)

Unit

Min.

Max.

Oscillator period

tCLCL

25

285.7

ns

High time

tCHCX

10

tCLCL - tCLCX

ns

Low time

tCLCX

10

tCLCL - tCHCX

ns

Rise time

tCLCH

-

10

ns

Fall time

tCHCL

-

10

ns

38	Jan. 2001 Ver 1.0

Image 42

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 NumberAddress Latch Enable Circuit ground potentialNo 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 RatingsDC Characteristics for GMS90C51C/52C/54C Parameter Symbol Limit Values Unit Test Conditions MinPower supply current Hyundai MicroElectronics DC Characteristics for GMS90L51C/52C/54C VCC= 3.3V + 0.3V, -0.6V VSS=0V TA= 0C to 70CExplanation of the AC Symbols AC Characteristics for GMS90X5XC series 12MHz versionExternal 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