Hyundai GMS90X52C, GMS90X51C, GMS90X54C user manual C8H T2CON TF2 EXF2 Rclk Tclk EXEN2 TR2 CP/RL2

Page 19

GMS90X5XC Series

HYUNDAI MicroElectronics

Table 3. Contents of SFRs, SFRs in Numeric Order (cont’d)

Address Register

Bit 7

6

5

4

3

2

1

0

C8H

T2CON

TF2

EXF2

RCLK

TCLK

EXEN2

TR2

C/T2

CP/RL2

C9H

T2MOD

-

-

-

-

-

-

T2OE †

DCEN

CAH

RC2L

CBH

RC2H

CCH

TL2

CDH

TH2

D0H

PSW

CY

AC

F0

RS1

RS0

OV

F1

P

E0H

ACC

F0H

B

† indicates resident in the GMS90X52C/54C, not in 90X51C.

8EH

8FH

†

C9H

A0

A0 : ALE Signal Disable bit

0 : Enable ALE Signal (Generated ALE Signal)

1 : Disable ALE Signal (Not Generated ALE Signal)

X2

X2 : CPU & Peripheral Clock Select bit

0 : Select 12 clock periods per machine cycle

1 : Select 6 clock periods per machine cycle

T2OE

T2OE : Timer2 Output Enable bit 0 : Disable Timer2 Output

1 : Enable Timer2 Output

SFR bit and byte addressable

SFR not bit addressable

- : this bit location is reserved

Jan. 2001 Ver 1.0

15

Image 19

Contents GMS90X51C GMS90X52C GMS90X54C Page Mask GMS90C51C Block DiagramGMS90C52C/54C GMS90L52C/54CLow voltage versions Plcc Pin Configuration top view PIN ConfigurationEA / VPP ALE / Prog Pdip Pin Configuration top viewMqfp Pin Configuration top view Logic Symbol XTAL2 PIN Definitions and FunctionsPin Number Symbol FunctionProgram Store Enable ResetCircuit ground potential Address Latch EnableNo connection Functional Description Block Diagram of the GMS90X5XC seriesSpecial Function Register PSW CPUSpecial Function Registers E0H C0HD0H FFH D8HD0H Contents of SFRs, SFRs in Numeric Order Address RegisterE0H F0HGF1 GF0 PDE Idle C8H T2CON TF2 EXF2 Rclk Tclk EXEN2 TR2 CP/RL2 Clock Generation Diagram X2 ModeMode Swithcing Waveforms Input Clock Timer / Counter 0Timer/Counter 0 and 1 Operating Modes Description TmodT2EX TimerTimer/Counter 2 Operating Modes P1.1 Remarks Input ClockSM0 SM1 Serial Interface UsartUsart Operating Modes Baudrate DescriptionInterrupt Request Sources Interrupt SystemInterrupt Priority-Within-Level Interrupt Source Power Saving Modes Absolute Maximum Ratings Electrical CharacteristicsParameter Symbol Limit Values Unit Test Conditions Min DC Characteristics for GMS90C51C/52C/54CPower supply current Hyundai MicroElectronics VCC= 3.3V + 0.3V, -0.6V VSS=0V TA= 0C to 70C DC Characteristics for GMS90L51C/52C/54CAC 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 44PLCC Plastic Package P-LCC-44Plastic Package P-DIP-40 Plastic Package P-MPQF-44 GMS90X5XC Series ROM Protection GMS90X5XC-GC