HD64F7045F28V Renesas Electronics America, HD64F7045F28V Datasheet - Page 93

• 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: -

4.16
The SH-DSP can perform up to two data transfers in parallel between the DSP register and on-
chip memory with the DSP unit. The SH-DSP has the following types of data transfers:
1. X and Y memory data transfers: Data transfer to X and Y memory using the XDB and YDB
2. Single data transfers: Data transfer to on-chip memory using the IDB bus
Note: Data transfer instructions do not update the DSR register’s condition bits.
Table 4.31 shows the various functions.
Table 4.31 Data Transfer Functions
4.16.1
X and Y memory data transfers allow two data transfers to be executed in parallel and allow data
transfers to be executed in parallel with DSP data operations. 32-bit instruction code is required
for executing DSP data operations and transfers in parallel. This is called a parallel data transfer.
When executing an X and Y memory data transfer by itself, 16-bit instruction code is used. This is
called a double data transfer.
Data transfers consist of X memory data transfers and Y memory data transfers. X memory data is
loaded to either the X0 or X1 register; Y memory data is loaded to the Y0 or Y1 register. The X0,
X1, Y0, and Y1 registers become the destination registers. Data can be stored in the X and Y
memory if the A0 or A1 register is the source register. All these data transfers involve word data
Category
X and Y
memory data
transfer
Single data
transfer
buses
•
•
Double data transfer: Data transfer only, where transfer in one direction only is permitted
Parallel data transfers: Data transfer that proceeds in parallel to ALU operation processing
Data Transfers
X and Y Memory Data Transfer
Bus
X bus
Y bus
IDB bus
Length
16 bits
32 bits
16 bits
Parallel Processing
with ALU Operation
None (double)
Available (parallel)
None
Rev. 5.00 Jun 30, 2004 page 77 of 512
Parallel Processing
with Data Transfer
None (X or Y bus)
Available (X and Y
bus)
None (X or Y bus)
Available (X and Y
bus)
None
Section 4 Instruction Features
REJ09B0171-0500O
Instruction
Length
16 bits
16 bits
32 bits
32 bits
16 bits