参数资料
型号: SM8521
厂商: Sharp Corporation
元件分类: DC/DC变换器
英文描述: 1 watt dc-dc converters
中文描述: 1瓦的DC - DC转换器
文件页数: 33/56页
文件大小: 267K
代理商: SM8521
SM8521
- 33 -
LCDC/DMA
The SM8521 supports LCD controller (LCDC) to
control LCD pannel, in a kind of dot matrix, which
is required external LCD drivers.
LCDC transfers display data in the external VRAM
to the LCD driver. The SM8521 supports a DMA,
which can transfer the data at the High speed,
between ROM and VRAM, VRAM and VRAM, and
external RAM and VRAM, without through the
CPU.
DMA transfers display data in the ROM and
external RAM to VRAM.
Source/destination register
ROM address generator
VRAM address generator
Internal
bus
VRAM
Timing
generator
Data composition
circuit
Shift register
External address bus
Interrupt (CPU)
LCD driver
External data bus
Fig. 15 LCD/DMA Block Diagram
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