HD6417727F100C Renesas Electronics America, HD6417727F100C Datasheet - Page 83

• Manufacturer Part Number: HD6417727F100C
• Description: IC SUPERH MPU ROMLESS 240QFP
• Manufacturer: Renesas Electronics America
• Series: SuperH® SH7700r

Specifications of HD6417727F100C

• Core Processor: SH-3 DSP
• Core Size: 32-Bit
• Speed: 100MHz
• Connectivity: FIFO, SCI, SIO, SmartCard, USB
• Peripherals: DMA, LCD, POR, WDT
• Number Of I /o: 104
• Program Memory Type: ROMless
• Ram Size: 32K x 8
• Voltage - Supply (vcc/vdd): 1.6 V ~ 2.05 V
• Data Converters: A/D 6x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 240-QFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Program Memory Size: -

2.1.1
There are sixteen 32-bit general registers (Rn), designated R0 to R15. The general registers are
used for data processing and address calculation.
With SuperH microcomputer type instructions, R0 is used as an index register. With a number of
instructions, R0 is the only register that can be used. R15 is used as the stack pointer (SP). In
exception handling, R15 is used to reference the stack when saving and restoring the status register
(SR) and program counter (PC).
With DSP type instructions, eight of the sixteen general registers are used for addressing of X and
Y data memory and data memory (single data) that uses the L-bus.
To access X memory, R4 and R5 are used as X address register [Ax] and R8 is used as X index
register [Ix]. To access Y memory, R6 and R7 are used as Y address register [Ay] and R9 is used
as Y index register [Iy]. To access single data that uses the L-bus, R2, R3, R4, and R5 are used as
single data address register [As] and R8 is used as single data index register [Is].
Figure 2.3 shows the general purpose registers, which are identical to SH-3’s, when DSP
extension is disabled.
31
General Purpose Registers
R0
R1
R2
R3
R4
R5
R6
R7
R8
R9
R10
R11
R12
R13
R14
R15
Figure 2.3 General Purpose Register (Not in DSP Mode)
*1 *2
*2
*2
*2
*2
*2
*2
*2
0
General Registers (when not in DSP mode)
Notes: 1. R0 functions as an index register in the
2. R0 to R7 are banked registers. In user mode,
indexed register-indirect addressing mode
and indexed GBR-indirect addressing mode.
In some instructions, only R0 can be used as
the source register or destination register.
BANK0 is used. In privileged mode, SR.RB
specifies BANK.
SR.RB = 0; BANK0 is used
SR.RB = 1; BANK1 is used
Rev.6.00 Mar. 27, 2009 Page 25 of 1036
REJ09B0254-0600
Section 2 CPU