HD6417750RF240DV Renesas Electronics America, HD6417750RF240DV Datasheet - Page 272

• Manufacturer Part Number: HD6417750RF240DV
• Description: MPU 3V 16K I-TEMP,PB-FREE 208-QF
• Manufacturer: Renesas Electronics America
• Series: SuperH® SH7750r

Specifications of HD6417750RF240DV

• Core Processor: SH-4
• Core Size: 32-Bit
• Speed: 240MHz
• Connectivity: EBI/EMI, FIFO, SCI, SmartCard
• Peripherals: DMA, POR, WDT
• Number Of I /o: 28
• Program Memory Type: ROMless
• Ram Size: 48K x 8
• Voltage - Supply (vcc/vdd): 1.4 V ~ 1.6 V
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 208-QFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Program Memory Size: -
• Data Converters: -

Section 6 Floating-Point Unit (FPU)
The exponent is expressed in biased form, as follows:
The range of unbiased exponent E is E
distinguished as follows. E
denormalized number, and E
Table 6.1 shows bias, E
Table 6.1
Parameter
Total bit width
Sign bit
Exponent field
Fraction field
Precision
Bias
E
E
Floating-point number value v is determined as follows:
Table 6.2 shows the ranges of the various numbers in hexadecimal notation.
Rev.7.00 Oct. 10, 2008 Page 186 of 1074
REJ09B0366-0700
max
min
If E = E
If E = E
If E
If E = E
If E = E
min
63
s
e = E + bias
≤ E ≤ E
max
max
min
min
62
Floating-Point Number Formats and Parameters
– 1 and f ≠ 0, v = (–1)
– 1 and f = 0, v = (–1)
+ 1 and f ≠ 0, v is a non-number (NaN) irrespective of sign s
+ 1 and f = 0, v = (–1)
Figure 6.2 Format of Double-Precision Floating-Point Number
max
, v = (–1)
e
min
, and E
min
max
– 1 indicates zero (both positive and negative sign) and a
s
2
+ 1 indicates positive or negative infinity or a non-number (NaN).
E
Single-Precision
32 bits
1 bit
8 bits
23 bits
24 bits
+127
+127
–126
52 51
max
(1.f) [normalized number]
values.
s
s
s
2
0 [positive or negative zero]
(infinity) [positive or negative infinity]
Emin
min
– 1 to E
(0.f) [denormalized number]
max
+ 1. The two values E
f
Double-Precision
64 bits
1 bit
11 bits
52 bits
53 bits
+1023
+1023
–1022
min
– 1 and E
max
+ 1 are
0