HD64F7045F28V Renesas Electronics America, HD64F7045F28V Datasheet - Page 504

• Manufacturer Part Number: HD64F7045F28V
• Description: IC SH2 MCU FLASH 144QFP
• Manufacturer: Renesas Electronics America
• Series: SuperH® SH7040r

Specifications of HD64F7045F28V

• Core Processor: SH-2
• Core Size: 32-Bit
• Speed: 28.7MHz
• Connectivity: EBI/EMI, SCI
• Peripherals: DMA, POR, PWM, WDT
• Number Of I /o: 98
• 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: 144-QFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

Section 7 Pipeline Operation
Delayed Conditional Branch Instructions (SH-2 CPU, SH-DSP): Include the following
instruction types:
The pipeline has three stages: IF, ID, and EX. Condition verification is performed in the ID stage.
1. When condition is satisfied
2. When condition is not satisfied
Rev. 5.00 Jun 30, 2004 page 488 of 512
REJ09B0171-0500O
BF/S label
BT/Slabel
The branch destination address is calculated in the EX stage. The instruction after the
conditional branch instruction (instruction A) is fetched and executed, but the instruction after
that is fetched and discarded. The branch destination instruction begins its fetch from the slot
following the slot which has the EX stage of instruction A (figure 7.80).
If it is determined that a condition is not satisfied at the ID stage, the EX stage proceeds
without doing anything. The next instruction also executes a fetch (figure 7.81).
Third instruction in series
Third instruction in series
Branch destination
Figure 7.81 Branch Instruction when Condition Is Not Satisfied
Figure 7.80 Branch Instruction when Condition Is Satisfied
Next instruction
Next instruction
Instruction A
Instruction A
.....
.....
.....
IF
IF
ID
ID
IF
IF
EX
EX
ID
—
IF
IF
EX
ID
—
ID
IF
IF
EX MA WB
.....
ID
EX
ID
IF
(Fetched but discarded)
EX
EX
.....
ID
EX
.....
.....
.....
: Slot
: Slot