HD6417750RF240DV Renesas Electronics America, HD6417750RF240DV Datasheet - Page 143

• 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: -

2.2.2
Figure 2.3 shows the relationship between the processor modes and general registers. The SH-4
has twenty-four 32-bit general registers (R0_BANK0–R7_BANK0, R0_BANK1–R7_BANK1,
and R8–R15). However, only 16 of these can be accessed as general registers R0–R15 in one
processor mode. The SH-4 has two processor modes, user mode and privileged mode, in which
R0–R7 are assigned as shown below.
• R0_BANK0–R7_BANK0
• R0_BANK1–R7_BANK1
In user mode (SR.MD = 0), R0–R7 are always assigned to R0_BANK0–R7_BANK0.
In privileged mode (SR.MD = 1), R0–R7 are assigned to R0_BANK0–R7_BANK0 only when
SR.RB = 0.
In user mode, R0_BANK1–R7_BANK1 cannot be accessed.
In privileged mode, R0–R7 are assigned to R0_BANK1–R7_BANK1 only when SR.RB = 1.
General Registers
Rev.7.00 Oct. 10, 2008 Page 57 of 1074
Section 2 Programming Model
REJ09B0366-0700