HD6417706F133 Renesas Electronics America, HD6417706F133 Datasheet - Page 66

• Manufacturer Part Number: HD6417706F133
• Description: IC SUPERH MPU ROMLESS 176LQFP
• Manufacturer: Renesas Electronics America
• Series: SuperH® SH7700r

Specifications of HD6417706F133

• Core Processor: SH-3
• Core Size: 32-Bit
• Speed: 133MHz
• Connectivity: EBI/EMI, FIFO, SCI, SmartCard
• Peripherals: DMA, POR, WDT
• Number Of I /o: 103
• Program Memory Type: ROMless
• Ram Size: 16K x 8
• Voltage - Supply (vcc/vdd): 1.75 V ~ 2.05 V
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 176-LQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Program Memory Size: -
• Data Converters: -

Section 2 CPU
2.1.3
System registers can be accessed by the LDS and STS instructions. When an exception occurs, the
contents of the program counter (PC) are saved in the saved program counter (SPC). The SPC
contents are restored to the PC by the RTE instruction used at the end of the exception handling.
There are three system registers, as follows.
The system register configuration is shown in figure 2.3.
1. Multiply and Accumulate Register (MAC)
2.
3.
Rev. 5.00 May 29, 2006 page 16 of 698
REJ09B0146-0500
Multiply and accumulate register (MAC)
Procedure register (PR)
Program counter (PC)
Multiply and Accumulate register is consist of Higher part register (MACH) and Lower part
register (MACL).
Store the results of multiply-and-accumulate operations.
Initialized to undefined by a reset.
Stores the return address for exiting a subroutine procedure.
Initialized to undefined by a reset.
Indicates the address four addresses (two instructions) ahead of the currently executing
instruction. Initialized to H'A0000000 by a reset.
Procedure Register (PR)
Program Counter (PC)
System Registers
Multiply and Accumulate Register (MAC)
Procedure Register (PR)
Program Counter (PC)
Figure 2.3 System Registers
31
31
31
MACH
MACL
PR
PC
0
0
0