P
RODUCT
I
NFORMATION
APPLICATIONS:
•
PDAs
•
GPS
•
Web Pads
•
Media Players
•
Test and Measurement
SHARP’s New Line
of MCUs and
System-on-Chips
LH79520 System-on-Chip
Solution for Color LCD Applications
FEATURES
• ARM720T™ Core
– 32-bit ARM7TDMI™ RISC Core
– 8KB Cache
– MMU
• High Performance (77.4 MHz)
• 32KB On-Chip SRAM
• Clock and Power Management
– 32 kHz Oscillator for RTC
– 14.7 MHz Oscillator and PLL for System Clock
• Programmable Color LCD Controller
– Up to SVGA (800 × 600) 16-bit Resolution
– Up to XGA (1,024 × 768) 8-bit Resolution
– Supports STN, Color STN, AD-TFT, TFT
– Up to 64 k Colors
• Flexible External Memory Interface
– SDRAM support
– SRAM/Flash/ROM support
• DMA (four channels)
• Synchronous Serial Interface (SSI)
• Four Counter/Timers
• Two Pulse Width Modulators (PWM)
• Three UARTs with Classic IrDA
• Real Time Clock (RTC)
• Up to 64 General Purpose I/Os (5 V Tolerant)
• Programmable Vectored Interrupt Controller
• Watchdog Timer
• JTAG Debug Interface and Boundary Scan
• Low Power Modes
– Active Mode: 55 mA (MAX.)
– Standby Mode: 35 mA (MAX.)
– Sleep Mode: 5.5 mA (MAX.)
– Stop Mode: 18 µA
• Operating Voltage
– 1.8 V Core
– 3.3 V Input/Output
• Temperature
– -40°C to +85°C Industrial
• 176-pin 22 x 22 mm LQFP
DESCRIPTION
The LH79520, powered by an ARM720T, is a complete System-
on-Chip that breaks the cost/performance barrier with a high level of
integration to satisfy a wide range of requirements and expectations. The
LH79520 combines a 32-bit ARM7TDMI RISC, 8KB Cache, MMU, color
LCD controller, and local SRAM. Also included are a number of essential
peripherals such as a DMA Controller, Serial and Parallel Interfaces, Infra-
red Support, Counter/Timers, Real Time Clock, Watchdog Timer, Pulse
Width Modulators, and an on-chip Phase Lock Loop.
This high level of integration lowers overall system cost, reduces
development cycle time and accelerates product introduction. Featuring
5 V tolerant inputs, the LH79520’s fully static design, power management
unit, low voltage operation (1.8 V Core, 3.3 V Input/Output), on-chip
PLL, and very low power RISC core provide high performance at a low
current draw.
HANDHELD PDA APPLICATION EXAMPLE
TOUCH
SCREEN
CONTR.
CODEC
IMAGER
SSP
STN/
TFT/AD-TFT
PWM
PIO
UART
DMA
FLASH/
SRAM/
SDRAM
LH79520
UART
IR
MEMORY
CARD
INTERFACE
SH
FLA D
CAR
79520-6
P
RODUCT
I
NFORMATION
LH79520 BLOCK DIAGRAM
DEBUG/TEST
INTERFACE
RESET
EXTERNAL
INTERRUPTS
14.7456 MHz
32.768 kHz
OSCILLATOR,
PLL POWER
MANAGEMENT, and
RESET CONTROL
Regional Sales Offices
REAL TIME
CLOCK
North American
Headquarters
Camas, WA
Ph (360) 834-2500
Fax (360) 834-8903
Central
Schaumburg, IL
Ph (847) 925-9150
Fax (847) 925-9172
Troy, MI
Ph (248) 458-1527
Fax (248) 391-6165
Austin, TX
Ph (512) 349-7262
Fax (512) 349-7002
Irving, TX
Ph (972) 582-1712
Fax (972) 580-7537
Houston, TX
Ph (281) 955-9909
Fax (281) 955-9910
Muskego, WI
Ph (414) 529-9568
Fax (414) 529-9569
TEST
LOGIC/PIN
MUXING
32KB
SRAM
GENERAL
PURPOSE I/O
West
Huntington Beach, CA
Ph (714) 903-4600
Fax (714) 903-0295
San Diego, CA
Ph (858) 597-0982
Fax (858) 597-8701
San Jose, CA
Ph (408) 436-4900
Fax (408) 436-0924
ARM 720T
CONDITIONED
EXTERNAL
INTERRUPTS
I/O
CONFIGURATION
EXTERNAL
BUS
INTERFACE
STATIC
MEMORY
CONTROLLER
VECTORED
INTERRUPT
CONTROLLER
SYNCHRONOUS
SERIAL PORT
TIMER (4)
INTERNAL
INTERRUPTS
SDRAM
CONTROLLER
DMA
CONTROLLER
DUAL
CHANNEL PWM
East
WATCHDOG
TIMER
ADVANCED
PERIPHERAL
BUS BRIDGE
UART (3)
IrDA
INTERFACE
ADVANCED HIGH
PERFORMANCE
BUS (AHB)
COLOR
LCD
CONTROLLER
ADVANCED
PERIPHERAL
BUS (APB)
Ft. Lauderdale, FL
Ph (954) 267-8883
Fax (954) 267-0254
Burlington, MA
Ph (781) 270-7979
Fax (781) 229-9117
Carey, NC
Ph (919) 460-0695
Fax (919) 460-0795
Pittsburgh, PA
Ph (412) 381-1191
Fax (412) 381-1192
Yardley, PA
Ph (215) 321-5530
Fax (215) 321-5534
ADVANCED
LCD
INTERFACE
Europe
79520-1
SHARP Microelectronics
Europe
Hamburg, Germany
Ph (49) 40-2376-2286
Fax (49) 40-2376-2232
Asia
SHARP Corporation
Osaka, Japan
Ph (81) 6-6621-1221
Fax (81) 6117-725300
Product Information: 1-800-642-0261
World Wide Website: http://www.sharpsma.com
Specifications are subject to change without notice. Suggested applications (if any) are for standard use; See Important Restrictions for limitations on special applications.
See Limited Warranty for SHARP’s product warranty. The Limited Warranty is in lieu, and exclusive of, all other warranties, express or implied. ALL EXPRESS AND IMPLIED
WARRANTIES, INCLUDING THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR USE AND FITNESS FOR A PARTICULAR PURPOSE, ARE SPECIFICALLY EXCLUDED.
In no event will SHARP be liable, or in any way responsible, for any incidental or consequential economic or property damage.
Copyright ©2001, SHARP Microelectronics of the Americas. All rights reserved. All tradenames are the registered property of their respective owners.
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