r8a77850anbg Renesas Electronics Corporation., r8a77850anbg Datasheet - Page 40

• Manufacturer Part Number: r8a77850anbg
• Description: Renesas 32-bit Risc Microcomputer Superh? Risc Engine Family
• Manufacturer: Renesas Electronics Corporation.

1. Overview
Rev.1.00 Jan. 10, 2008 Page 10 of 1658
REJ09B0261-0100
Item
Display unit (DU)
Serial
communications
interface with FIFO
(SCIF)
Features
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Display plane
⎯ 6 planes (a maximum number at 480 dots x 234 dots)
⎯ 4 planes (a maximum number at 854 dots x 480 dots)
⎯ 3 planes (a maximum number at 800 dots x 600 dots)
CRT scanning method: Non-interlaced, interlaced, interlaced sync & video
Synchronization modes: Master mode (internal synchronization mode),
TV synchronization mode (external synchronization mode),
synchronization-mode switching mode
Incorporates color palettes
⎯ Displays 256 colors from among 260 thousand possible colors
⎯ Four palettes (one can be set for each layer)
Blending ratio setting
⎯ Number of color-palette planes with blending ratios: Four
⎯ α plane: (used in common with the display plane)
Digital RGB output: 6-bit precision for each of R, G, and B
Dot clock: Can be switched between external input and internal clock
(division ratio: from 1 to 32)
Number of channels: Six (max.)
On-chip 64-byte (8 bits x 64) FIFO for each of the six channels
Two full-duplex channels
Choice of asynchronous mode or synchronous mode
Any bit rate that can be generated by the on-chip baud-rate generator is
selectable
On-chip modem-control function (RTS and CTS) for channel 0
Internal clock signal from the baud-rate generator or external clock signal
from the SCK pin is selectable