Realtek RTD2120-series
confidential
3
Overview
This chip is the micro-processor of LCD monitor. It uses the Designware DW8051 of Synopsys
as the 8051 core of this chip and is compatible with other industry 8051 series. Also, 96Kbyte
FLASH with 8 bit bus is embedded in this chip which is licensed from TSMC 0.18um e-FLASH
process. Here we use the package of PLCC44/LQFP48/QFP44 if we would like to have a discrete
MCU controller or we make a multi-chip package with our LCD monitor controller to form one
chip package to save the cost of package and PCB material.
Features
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Operating voltage range : 3.0V to 3.6V
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8051 core, CPU operating frequency up to 50MHz
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4 clocks per machine cycle
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256-byte internal RAM
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512-byte external data RAM, including 256-byte DDC RAM(128-byte x 2) and 256-byte
general purpose RAM
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96K-byte flash memory, 64k for program and 32k for saving parameter
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Two DDC ports compliant with VESA DDC1/2B/2Bi/CI
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Three channels of PWM DAC with programmable frequency from 100K to 100Hz
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Watchdog timer with programmable interval
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Three 16-bit counters/timers (T0, T1, and T2)
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One PLL to provide programmable operating frequency and clock output, 2 clock output
ports
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One full-duplex serial port
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Six interrupt sources with 2 external interrupts
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Four channels of 6-bit ADC
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Hardware In System Programming(ISP) capability, no boot code required
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Built-in Low voltage reset circuit
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Embedded 1.8V regulator
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Code protection
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Available in 44-pin PLCC, 44-pin QFP or 48-pin LQFP package
