LH7A404N0F000B1A Sharp Microelectronics, LH7A404N0F000B1A Datasheet - Page 22

• Manufacturer Part Number: LH7A404N0F000B1A
• Description: IC ARM9 BLUESTREAK MCU 324CABGA
• Manufacturer: Sharp Microelectronics
• Series: BlueStreak ; LH7Ar

Specifications of LH7A404N0F000B1A

• Core Processor: ARM9
• Core Size: 32-Bit
• Speed: 200MHz
• Connectivity: Audio CODEC, EBI/EMI, IrDA, MMC, SmartCard, SSP, UART/USART, USB
• Peripherals: AC'97, DMA, LCD, POR, PWM, WDT
• Number Of I /o: 64
• Program Memory Type: ROMless
• Ram Size: 80K x 8
• Voltage - Supply (vcc/vdd): 1.71 V ~ 3.6 V
• Data Converters: A/D 9x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 324-CABGA
• For Use With: 568-4304 - BOARD EVAL FOR LH7A404
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Program Memory Size: -
• Other names: 425-2497

LH7A404
External Bus Interface
have access to an external memory system. The LCD
controller has access to an internal frame buffer in
embedded SRAM and an extension buffer in Synchro-
nous Memory for large displays. The processor and
22
The ARM922T, LCD controller, and DMA engine
SYSTEM AHB BUS
CONTROLLER
ARM922T
MMU
LCD
LCD
CONTROLLER
DMA
EMBEDDED
LCD AHB BUS
SRAM
80KB
Figure 4. External Bus Interface Block Diagram
HOST
USB
ASYNCHRONOUS
CONTROLLER
MEMORY
SYNCHRONOUS
CONTROLLER
MEMORY
Version 1.0
DMA engine share the main system bus, providing
access to all external memory devices and the embed-
ded SRAM frame buffer.
External Bus Interface (EBI) is only granted when an
existing access has been completed. See Figure 4.
An arbitration unit ensures that control over the
INTERFACE
EXTERNAL
INTERNAL TO
(EBI)
THE LH7A404
BUS
ADDRESS/
CONTROL
DATA
EXTERNAL TO
THE LH7A404
32-Bit System-on-Chip
SDRAM
SDRAM
Data Sheet
SRAM
ROM
LH7A404-8