LH79520

LH79520 Description générale

DESCRIPTIONThe LH79520, powered by an ARM720T, is a complete System-on-Chip with a high level of integration to satisfy a wide range of requirements and expectations. The LH79520 combines a 32-bit ARM720T RISC, Color LCD controller, Cache, Local SRAM, a number of essential peripherals such as Direct Memory Access, Serial and Parallel Interfaces, Infrared support, Timers, Real Time Clock, Watchdog Timer, Pulse Width Modu lators, and an on-chip Phase Lock Loop. Debug is made simple by JTAG supportFEATURES• Highly Integrated System-on-Chip• High Performance (77.4144 MHz CPU Speed)• ARM720T™ RISC Core   – 32-bit ARM7TDMI™ RISC Core   – 8 kB Cache   – MMU (Windows CE™ Enabled)   – Write Buffer• 32 kB On-Chip SRAM• Flexible, Programmable Memory Interface   – SDRAM Interface   – 15-bit External Address Bus   – 32-bit External Data Bus   – Two Segments (128 MB each)   – SRAM/Flash/ROM Interface   – 26-bit External Address Bus   – 32-bit External Data Bus   – Seven Segments (64 MB Each)• Multi-stream DMA Controller   – Four 32-bit Burst-based Data Streams• Clock and Power Management   – 32.768 kHz Oscillator for Real Time Clock   – 14.7456 MHz Oscillator and On-chip PLL for CPU and Bus Clocks   – Active, Standby, Sleep and Stop Power Modes   – Externally-supplied Clock Options• Low Power Modes   – Active Mode: 55 mA (MAX.)   – Standby Mode: 35 mA (MAX.)   – Sleep Mode: 5.5 mA (MAX.)   – Stop Mode 2: 18 µA• Watchdog Timer• Vectored Interrupt Controller   – 16 Standard and 16 Vectored IRQ Interrupts   – Hardware Interrupt Priority   – Software Interrupts   – FIQ Fast Interrupts• Three UARTs   – 16-byte FIFOs for Rx and Tx   – IrDA SIR Support   – Supports Data Rates Up to 460.8 kb/s• Two 16-bit Pulse Width Modulators• Two Dual Channel Timer Modules• Real Time Clock   – 32-bit Up-counter with Programmable Load   – Programmable 32-bit Match Compare Register• 64 Programmable General Purpose I/O Signals   – Multiplexed with Peripheral I/O Signals• Programmable Color LCD Controller   – Up to 800 × 600 Resolution   – Supports STN, Color STN, AD-TFT, TFT   – Supports 15 Shades of Gray   – TFT: Supports 64 k Direct Colors or 256 Colors selected from a Palette of 64,000 Colors   – Color STN: Supports 3,375 Direct Colors or 256 Colors Selected from a Palette of 3,375 Colors• Synchronous Serial Port   – Supports Data Rates Up to 1.8452 Mb/s   – Compatible with Common Interface Schemes   – Motorola SPI™   – National Semiconductor MICROWIRE™   – Texas Instruments SSI• JTAG Debug Interface and Boundary Scan• 5 V Tolerant Digital I/O   – XTALIN and XTAL32IN inputs are 1.8 V ± 10 %

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