R8A77850BDBGV#RD0Z Renesas Electronics America, R8A77850BDBGV#RD0Z Datasheet - Page 983

• Manufacturer Part Number: R8A77850BDBGV#RD0Z
• Description: IC SUPERH MPU ROMLESS 436BGA
• Manufacturer: Renesas Electronics America
• Series: SuperH® SH7780r

Specifications of R8A77850BDBGV#RD0Z

• Core Processor: SH-4A
• Core Size: 32-Bit
• Speed: 600MHz
• Connectivity: Audio Codec, MMC, Serial Sound, SCI, SIO, SPI, SSI
• Peripherals: DMA, POR, WDT
• Number Of I /o: 108
• Program Memory Type: ROMless
• Ram Size: 8K x 8
• Voltage - Supply (vcc/vdd): 1 V ~ 1.2 V
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 436-BGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Program Memory Size: -
• Data Converters: -

19.4.13 Wraparound Display
In addition to display scrolling, wrap-around display, which can be used in spherical scrolling, is
possible for each plane. When enabling wrap-around display, the PnWAE bit in PnMR is set. As a
result of changing the plane n display start position X, Y (the plane n start position X set in
PnSPXR and the plane n start position Y set in PnSPYR) in order to scroll the display, even when
plane n overflows the wrap-around area, the wrap-around area is seen as a spherical surface in
wrap-around display, as in figure 19.10, and the part overflowing is complemented and displayed.
The method used to specify the wrap-around area is described below.
1. The leading address of the memory used for plane n is specified in PnDSA0R and PnDSA1R.
2. With the beginning of the specified memory as origin, the upper-left coordinates of the wrap-
3. The Y-direction width of the wrap-around area is set in PnWAMWR.
Note: When wrap-around display is disabled (when the PnWAE bit in PnMR is 0), the part
around area are specified in PnWASPR. The X-direction width of the wrap-around area is the
memory width set in PnMWR.
overflowing the wrap-around area becomes the color specified by BPOR, and
superposition processing using this color is performed.
Plane n wrap-around start position
Plane n display area start address
4
2
Figure 19.10 Schematic Diagram of Wraparound Display
3
Plane n display start position
Memory width
Plane n display start position
1
Rev.1.00 Jan. 10, 2008 Page 951 of 1658
Wrap-around
memory width Y
Wrap-around display
1
3
19. Display Unit (DU)
2
4
REJ09B0261-0100