R8A77800ANBGAV Renesas Electronics America, R8A77800ANBGAV Datasheet - Page 451

• Manufacturer Part Number: R8A77800ANBGAV
• Description: IC SUPERH MPU ROMLESS 449-BGA
• Manufacturer: Renesas Electronics America
• Series: SuperH® SH7780r

Specifications of R8A77800ANBGAV

• Core Processor: SH-4A
• Core Size: 32-Bit
• Speed: 400MHz
• Connectivity: Audio Codec, MMC, Serial Sound, SCI, SIO, SPI, SSI
• Peripherals: DMA, POR, WDT
• Number Of I /o: 75
• Program Memory Type: ROMless
• Ram Size: 16K x 8
• Voltage - Supply (vcc/vdd): 1.15 V ~ 1.35 V
• Oscillator Type: External
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 449-BGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Program Memory Size: -
• Data Converters: -

Section 11 Local Bus State Controller (LBSC)
11.5.11 Cooperation between Master and Slave
To enable system resources to be controlled in a harmonious fashion by master and slave, their
respective roles must be clearly defined.
When designing an application system that includes the SH7780, all control, including
initialization, and low power consumption control, are supposed to be carried out by the SH7780.
In a power-on reset, the SH7780 will not accept bus requests from the slave until the BREQ enable
bit (BCR.BREQEN) is set to 1.
To ensure that the slave processor does not access memory requiring initialization before use,
write 1 to the BREQ enable bit only after the SH7780 has performed the initialization.
Rev.1.00 Dec. 13, 2005 Page 399 of 1286
REJ09B0158-0100