HD6417750SBP200 Renesas Electronics America, HD6417750SBP200 Datasheet - Page 278
HD6417750SBP200
Manufacturer Part Number
HD6417750SBP200
Description
IC SUPERH MPU ROMLESS 256BGA
Manufacturer
Renesas Electronics America
Series
SuperH® SH7750r
Datasheet
1.D6417750RBP240DV.pdf
(1164 pages)
Specifications of HD6417750SBP200
Core Processor
SH-4
Core Size
32-Bit
Speed
200MHz
Connectivity
EBI/EMI, FIFO, SCI, SmartCard
Peripherals
DMA, POR, WDT
Number Of I /o
28
Program Memory Type
ROMless
Ram Size
24K x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 2.07 V
Oscillator Type
External
Operating Temperature
-20°C ~ 75°C
Package / Case
256-BGA
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
Program Memory Size
-
Data Converters
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
HD6417750SBP200
Manufacturer:
RENESAS/瑞萨
Quantity:
20 000
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Section 6 Floating-Point Unit (FPU)
• Flag: FPU exception flag field
• RM: Rounding mode
• Bits 22 to 31: Reserved
6.3.3
Information is transferred between the FPU and CPU via the FPUL register. The 32-bit FPUL
register is a system register, and 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.7.00 Oct. 10, 2008 Page 192 of 1074
REJ09B0366-0700
These bits are always read as 0, and should only be written with 0.
When an FPU operation instruction is executed, the FPU exception cause field is cleared to
zero first. When the next FPU exception is occured, the corresponding bits in the FPU
exception cause field and FPU exception flag field are set to 1. The FPU exception flag field
holds the status of the exception generated after the field was last cleared.
RM = 00: Round to Nearest
RM = 01: Round to Zero
RM = 10: Reserved
RM = 11: Reserved
Cause
Enable
Flag
R1 → (LDS instruction) → FPUL → (single-precision FLOAT instruction) → FR1
Floating-Point Communication Register (FPUL)
FPU exception
cause field
FPU exception
enable field
FPU exception
flag field
FPU
Error (E)
Bit 17
None
None
Invalid
Operation (V)
Bit 16
Bit 11
Bit 6
Division
by Zero (Z)
Bit 15
Bit 10
Bit 5
Overflow
(O)
Bit 14
Bit 9
Bit 4
Underflow
(U)
Bit 13
Bit 8
Bit 3
Inexact
(I)
Bit 12
Bit 7
Bit 2
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