Hyundai GMS90X52C, GMS90X51C, GMS90X54C user manual GMS90C51C, Block Diagram

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GMS90X5XC Series

HYUNDAI MicroElectronics

GMS90C51C

GMS90L51C(Low voltage versions)

•Fully compatible to standard MCS-51 microcontroller

•Wide operating frequency up to 40MHz

(for more detail, see “GMS90X5XC Series Selection Guide”)

•X2 Speed Improvement capability (6 clocks/machine cycle) 20MHz @5V (Equivalent to 40MHz @5V)

8MHz @3V (Equivalent to 16MHz @3V)

•4K × 8 ROM

•128 × 8 RAM

•64K external program memory space

•64K external data memory space

•Four 8-bit ports

•Two 16-bit Timers / Counters

•USART

•Programmable ALE pin enable / disable (Low EMI)

•Five interrupt sources, two priority levels

•Power saving Idle and power down mode

•2.7Volt low voltage version available

•P-DIP-40, P-LCC-44, P-MQFP-44 package

Block Diagram

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RAM

 

PORT 0

 

 

 

 

I/O

 

 

 

 

 

 

 

 

128 ×

8

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

T 0

CPU

 

 

8-BIT

PORT 1

 

 

 

 

I/O

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

USART

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

T 1

 

 

 

 

PORT 2

 

 

 

 

I/O

 

 

 

 

 

 

 

 

 

 

 

 

 

ROM / EPROM

 

PORT 3

 

 

 

 

I/O

 

 

 

 

 

 

 

 

4K ×

8

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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 XTAL2Symbol Function Program Store EnableReset Pin NumberCircuit ground potential Address Latch EnableNo 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 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
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