HD64F38024DV Renesas Electronics America, HD64F38024DV Datasheet - Page 318

• Manufacturer Part Number: HD64F38024DV
• Description: IC H8/SLP MCU FLASH 80QFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8/300L SLPr

Specifications of HD64F38024DV

• Core Processor: H8/300L
• Core Size: 8-Bit
• Speed: 10MHz
• Connectivity: SCI
• Peripherals: LCD, PWM, WDT
• Number Of I /o: 51
• Program Memory Size: 32KB (32K x 8)
• Program Memory Type: FLASH
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 80-QFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

(2) float type
304
The float type is internally represented by a 1-bit sign, an 8-bit exponent, and a 23-bit
mantissa.
i. Normalized numbers
ii. Denormalized numbers
The sign indicates the sign of the value, either 0 (positive) or 1 (negative). The exponent is
between 1 and 254 (2
value. The range is between 126 and 127. The mantissa is between 0 and 2
actual mantissa is interpreted as the value of which the 2
by the decimal point. Values of normalized numbers are as follows:
( 1)
Example:
31 30
Sign:
Exponent: 10000000
Mantissa: 1.11
Value:
The sign indicates the sign of the value, either 0 (positive) or 1 (negative). The exponent is
0 and the actual exponent is 126. The mantissa is between 1 and 2
mantissa is interpreted as the value of which the 2
decimal point. Values of denormalized numbers are as follows:
( 1)
Example:
31 30
Sign:
Exponent:
Mantissa: 0.11
Value:
1 1 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
sign
sign
2
2
exponent 127
126
+
0.75
1.75
126
23 22
23 22
((mantissa)
(2)
(2)
= 1.75
= 0.75, where
2
(1+(mantissa)
2
126
8
1
(2)
2). The actual exponent is gained by subtracting 127 from this
=
127 = 1, where
3.5
2
23
)
(2)
indicates binary
2
23
)
(2)
indicates binary
23
rd bit is 0 and this bit is followed by the
23
rd bit is 1 and this bit is followed
0
0
23
1, and the actual
23
1. The