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Hyundai GMS90X51C, GMS90X52C, GMS90X54C GMS90C51C GMS90L51C(Low voltage versions)

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GMS90X5XC Series HYUNDAI MicroElectronics

Jan. 2001 Ver 1.0

GMS90C51CGMS90L51C(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

128 × 8 PORT 0

PORT 1

PORT 3

PORT 2

8-BIT

USART

ROM / EPROM

4K × 8

CPU

T 0

T 1

I/O

Contents

Main Page Jan. 2001 Ver 1.0 Device Naming Structure GMS90X5XC Series Selection Guide GMS90X5XC - GCXXX XX XX Jan. 2001 Ver 1.0 GMS90C51C GMS90L51C(Low voltage versions) GMS90X5XC Series HYUNDAI MicroElectronics Jan. 2001 Ver 1.0 1 GMS90C52C/54C GMS90L52C/54C(Low voltage versions) 2 Jan. 2001 Ver 1.0 PIN CONFIGURATION 44-PLCC Pin Configuration (top view) Jan. 2001 Ver 1.0 3 40-PDIP Pin Configuration (top view) 4 Jan. 2001 Ver 1.0 44-MQFP Pin Configuration (top view) GMS90X5XC Series HYUNDAI MicroElectronics Jan. 2001 Ver 1.0 5 Logic Symbol 6 Jan. 2001 Ver 1.0 PIN DEFINITIONS AND FUNCTIONS Jan. 2001 Ver 1.0 7 8 Jan. 2001 Ver 1.0 Jan. 2001 Ver 1.0 9 FUNCTIONAL DESCRIPTION Figure 1. Block Diagram of the GMS90X5XC series 10 Jan. 2001 Ver 1.0 CPU CY AC F0 RS1 RS0 OV F1 P Jan. 2001 Ver 1.0 11 SPECIAL FUNCTION REGISTERS 12 Jan. 2001 Ver 1.0 Jan. 2001 Ver 1.0 13 14 Jan. 2001 Ver 1.0 Jan. 2001 Ver 1.0 15 16 Jan. 2001 Ver 1.0 X2 MODE X2 Mode Description Page 18 Jan. 2001 Ver 1.0 TIMER / COUNTER 0 AND 1 Timer/Counter 0 and 1 can be used in four operating modes as listed in Table 4: Jan. 2001 Ver 1.0 19 TIMER 2 20 Jan. 2001 Ver 1.0 SERIAL INTERFACE (USART) Jan. 2001 Ver 1.0 21 INTERRUPT SYSTEM Figure 5. Interrupt Request Sources 22 Jan. 2001 Ver 1.0 Jan. 2001 Ver 1.0 23 Power Saving Modes 24 Jan. 2001 Ver 1.0 ELECTRICAL CHARACTERISTICS Absolute Maximum Ratings Jan. 2001 Ver 1.0 25 DC Characteristics DC Characteristics for GMS90C51C/52C/54C VCC= 5V + 10%, -15%; VSS=0V; TA= 0C to 70C 26 Jan. 2001 Ver 1.0 Jan. 2001 Ver 1.0 27 DC Characteristics for GMS90L51C/52C/54C VCC= 3.3V + 0.3V, -0.6V; VSS=0V; TA= 0C to 70C 28 Jan. 2001 Ver 1.0 AC Characteristics AC Characteristics for GMS90X5XC series (12MHz version) Page 30 Jan. 2001 Ver 1.0 AC Characteristics for GMS90X5XC series (12MHz) Advance Information (12MHz) Jan. 2001 Ver 1.0 31 32 Jan. 2001 Ver 1.0 AC Characteristics for GMS90X5XC series (16MHz) Advance Information (16MHz) Jan. 2001 Ver 1.0 33 34 Jan. 2001 Ver 1.0 AC Characteristics for GMS90X5XC series (24MHz) Advance Information (24MHz) Jan. 2001 Ver 1.0 35 36 Jan. 2001 Ver 1.0 AC Characteristics for GMS90X5XC series (33MHz) Advance Information (33MHz) Jan. 2001 Ver 1.0 37 38 Jan. 2001 Ver 1.0 AC Characteristics for GMS90X5XC series (40MHz) Advance Information (40MHz) Jan. 2001 Ver 1.0 39 Figure 6. External Program Memory Read Cycle 40 Jan. 2001 Ver 1.0 RD WR Figure 7. External Data Memory Read Cycle Figure 8. External Data Memory Write Cycle Jan. 2001 Ver 1.0 41 AC Inputs during testing are driven at VCC0.5V for a logic 1 and 0.45V for a logic 0. Figure 9. AC Testing: Input, Output Waveforms Figure 11. External Clock Cycle Figure 10. Float Waveforms OSCILLATOR CIRCUIT Figure 12. Recommended Oscillator Circuits C1, C2 = 30pF 10pF for Crystals For Ceramic Resonators, contact resonator manufacturer. Jan. 2001 Ver 1.0 43 Plastic Package P-LCC-44 (Plastic Leaded Chip-Carrier) UNIT: INCH 44PLCC 44 Jan. 2001 Ver 1.0 Jan. 2001 Ver 1.0 45 Plastic Package P-MPQF-44 (Plastic Metric Quad Flat Package) DETAIL "A" UNIT: MM 44MQFP Page MASK ORDER & VERIFICATION SHEET GMS90X5XC-GC Customers part number HYUNDAI MicroElectronics