Hyundai GMS90X51C, GMS90X52C, GMS90X54C user manual Advance Information 16MHz External Clock Drive

Page 36

HYUNDAI MicroElectronics

GMS90X5XC Series

AC Characteristics for GMS90X5XC series (16MHz)

External Data Memory Characteristics

16 MHz Oscillator

Variable Oscillator

Parameter

Symbol

1/tCLCL = 3.5 to 16MHz

Unit

Min.

Max.

Min.

Max.

pulse width

tRLRH

275

-

6tCLCL-100

-

ns

RD

pulse width

tWLWH

275

-

6tCLCL-100

-

ns

WR

Address hold after ALE

tLLAX2

23

-

tCLCL-40

-

ns

to valid data in

tRLDV

-

183

-

5tCLCL-130

ns

RD

Data hold after

tRHDX

0

-

0

-

ns

RD

Data float after

tRHDZ

-

75

-

2tCLCL-50

ns

RD

ALE to valid data in

tLLDV

-

350

-

8tCLCL-150

ns

Address to valid data in

tAVDV

-

398

-

9tCLCL-165

ns

ALE to

or

tLLWL

138

238

3tCLCL−50

3tCLCL+50

ns

WR

RD

Address valid to

or

tAVWL

120

-

4tCLCL-130

-

ns

WR

RD

or

high to ALE high

tWHLH

28

97

tCLCL−35

tCLCL+35

ns

WR

RD

Data valid to

transition

tQVWX

13

-

tCLCL−50

-

ns

WR

Data setup before

tQVWH

288

-

7tCLCL-150

-

ns

WR

Data hold after

tWHQX

23

-

tCLCL−40

-

ns

WR

Address float after

tRLAZ

-

0

-

0

ns

RD

Advance Information (16MHz)

External Clock Drive

Variable Oscillator

Parameter

Symbol

(Freq. = 3.5 to 16MHz)

Unit

Min.

Max.

Oscillator period

tCLCL

62.5

285.7

ns

High time

tCHCX

17

tCLCL - tCLCX

ns

Low time

tCLCX

17

tCLCL - tCHCX

ns

Rise time

tCLCH

-

17

ns

Fall time

tCHCL

-

17

ns

32	Jan. 2001 Ver 1.0

Image 36

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 XTAL2Symbol Function Program Store EnableReset Pin NumberAddress Latch Enable Circuit ground potentialNo connection Block Diagram of the GMS90X5XC series Functional DescriptionCPU Special Function Register PSWSpecial Function Registers C0H D0HFFH D8H E0HContents of SFRs, SFRs in Numeric Order Address Register E0HF0H D0HGF1 GF0 PDE Idle C8H T2CON TF2 EXF2 Rclk Tclk EXEN2 TR2 CP/RL2 X2 Mode Clock Generation DiagramMode Swithcing Waveforms Timer / Counter 0 Timer/Counter 0 and 1 Operating Modes DescriptionTmod Input ClockTimer Timer/Counter 2 Operating ModesP1.1 Remarks Input Clock T2EXSerial Interface Usart Usart Operating ModesBaudrate Description 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