R8A77850BDBGV#RD0Z Renesas Electronics America, R8A77850BDBGV#RD0Z Datasheet - Page 157

• 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: -

6.1
The FPU has the following features.
• Conforms to IEEE754 standard
• 32 single-precision floating-point registers (can also be referenced as 16 double-precision
• Two rounding modes: Round to Nearest and Round to Zero
• Two denormalization modes: Flush to Zero and Treat Denormalized Number
• Six exception sources: FPU Error, Invalid Operation, Divide By Zero, Overflow, Underflow,
• Comprehensive instructions: Single-precision, double-precision, graphics support, and system
• In the SH-4A, the following three instructions are added on to the instruction set of the SH-4
When the FD bit in SR is set to 1, the FPU cannot be used, and an attempt to execute an FPU
instruction will cause an FPU disable exception (general FPU disable exception or slot FPU
disable exception).
registers)
and Inexact
control
FSRRA, FSCA, and FPCHG
Features
Section 6 Floating-Point Unit (FPU)
Rev.1.00 Jan. 10, 2008 Page 125 of 1658
6. Floating-Point Unit (FPU)
REJ09B0261-0100