HD64F3437TFI16V Renesas Electronics America, HD64F3437TFI16V Datasheet - Page 54

• Manufacturer Part Number: HD64F3437TFI16V
• Description: MCU FLASH 60K 100-TQFP
• Manufacturer: Renesas Electronics America

Specifications of HD64F3437TFI16V

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Bit 5—Half-Carry Flag (H): This flag is set to 1 when the ADD.B, ADDX.B, SUB.B, SUBX.B,
NEG.B, or CMP.B instruction causes a carry or borrow out of bit 3, and is cleared to 0 otherwise.
Similarly, it is set to 1 when the ADD.W, SUB.W, or CMP.W instruction causes a carry or borrow
out of bit 11, and cleared to 0 otherwise. It is used implicitly in the DAA and DAS instructions.
Bit 4—User Bit (U): This bit can be written and read by software (using the LDC, STC, ANDC,
ORC, and XORC instructions).
Bit 3—Negative Flag (N): This flag indicates the most significant bit (sign bit) of the result of an
instruction.
Bit 2—Zero Flag (Z): This flag is set to 1 to indicate a zero result and cleared to 0 to indicate a
nonzero result.
Bit 1—Overflow Flag (V): This flag is set to 1 when an arithmetic overflow occurs, and cleared
to 0 at other times.
Bit 0—Carry Flag (C): This flag is used by:
The LDC, STC, ANDC, ORC, and XORC instructions enable the CPU to load and store the CCR,
and to set or clear selected bits by logic operations. The N, Z, V, and C flags are used in
conditional branching instructions (B
For the action of each instruction on the flag bits, see the H8/300 Series Programming Manual.
2.2.3
When the CPU is reset, the program counter (PC) is loaded from the vector table and the interrupt
mask bit (I) in the CCR is set to 1. The other CCR bits and the general registers are not initialized.
In particular, the stack pointer (R7) is not initialized. The stack pointer and CCR should be
initialized by software, by the first instruction executed after a reset.
22
Add and subtract instructions, to indicate a carry or borrow at the most significant bit of the
result
Shift and rotate instructions, to store the value shifted out of the most significant or least
significant bit
Bit manipulation and bit load instructions, as a bit accumulator
Initial Register Values
CC
).