R8A77850AADBGV Renesas Electronics America, R8A77850AADBGV Datasheet - Page 168
R8A77850AADBGV
Manufacturer Part Number
R8A77850AADBGV
Description
IC SUPERH MCU 436-BGA
Manufacturer
Renesas Electronics America
Series
SuperH® SH7780r
Datasheet
1.R8A77850AADBGV.pdf
(1694 pages)
Specifications of R8A77850AADBGV
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
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
R8A77850AADBGV
Manufacturer:
Renesas Electronics America
Quantity:
10 000
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6. Floating-Point Unit (FPU)
Table 6.3
6.3.3
Information is transferred between the FPU and CPU via FPUL. FPUL is a 32-bit system register
that is accessed from the CPU side by means of LDS and STS instructions. For example, to
convert the integer stored in general register R1 to a single-precision floating-point number, the
processing flow is as follows:
Rev.1.00 Jan. 10, 2008 Page 136 of 1658
REJ09B0261-0100
Cause
Enable
Flag
R1 → (LDS instruction) → FPUL → (single-precision FLOAT instruction) → FR1
Field Name
FPU exception
cause field
FPU exception
enable field
FPU exception
flag field
Floating-Point Communication Register (FPUL)
Bit Allocation for FPU Exception Handling
FPU
Error (E)
Bit 17
None
None
Invalid
Operation (V)
Bit 16
Bit 11
Bit 6
Bit 15
Division
by Zero (Z)
Bit 10
Bit 5
Overflow
(O)
Bit 14
Bit 9
Bit 4
Underflo
w (U)
Bit 13
Bit 8
Bit 3
Inexact
(I)
Bit 12
Bit 7
Bit 2
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