HD64F7044F28V Renesas Electronics America, HD64F7044F28V Datasheet - Page 465

• Manufacturer Part Number: HD64F7044F28V
• Description: IC SUPERH MCU FLASH 112QFP
• Manufacturer: Renesas Electronics America
• Series: SuperH® SH7040r

Specifications of HD64F7044F28V

• Core Processor: SH-2
• Core Size: 32-Bit
• Speed: 28.7MHz
• Connectivity: EBI/EMI, SCI
• Peripherals: DMA, POR, PWM, WDT
• Number Of I /o: 74
• Program Memory Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Ram Size: 4K x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 112-QFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

1. When a MAC.W instruction is located immediately after another MAC.W instruction
Figure 7.33 MAC.W Instruction That Immediately Follows Another MAC.W instruction
The second MA of a MAC.W instruction does not contend with an mm generated by a
preceding multiplication instruction.
Sometimes consecutive MAC.Ws may have misalignment of instruction execution caused by
MA and IF contention. Figure 7.34 illustrates a case of this type. This figure assumes MA and
IF contention.
Third instruction
MAC.W
MAC.W
MAC.W
MAC.W
......
MAC.W
MAC.W
......
Figure 7.34 Consecutive MAC.Ws with Misalignment
if
ID
IF
IF
EX
— ID
ID
IF
MA
if
EX
MA
—
EX
—
mm
MA
MA
— ID EX
ID
IF
mm
—
IF
MA
EX
—
MA mm mm
— ID EX MA MA mm ....
mm
MA
ID
MA
Rev. 5.00 Jun 30, 2004 page 449 of 512
mm
MA mm mm
EX
MA
MA
mm
Section 7 Pipeline Operation
mm
....
REJ09B0171-0500O
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