HD6432351 datasheet(68/1025 Pages) RENESAS

Numer części	HD6432351

Szczegółowy opis	16-Bit Single-Chip Microcomputer

PDF	1025 Pages

Scroll/Zoom	100%

Producent	RENESAS [Renesas Technology Corp]

Strona internetowa	http://www.renesas.com

Logo

68 / 1025 page

Section 2 CPU

Rev. 3.00 Sep 15, 2006 page 34 of 988

REJ09B0330-0300

The carry flag is also used as a bit accumulator by bit manipulation instructions.

Some instructions leave some or all of the flag bits unchanged. For the action of each instruction

on the flag bits, refer to appendix A.1, Instruction List.

Operations can be performed on the CCR bits by the LDC, STC, ANDC, ORC, and XORC

instructions. The N, Z, V, and C flags are used as branching conditions for conditional branch

(Bcc) instructions.

2.4.4

Initial Register Values

Reset exception handling loads the CPU’s program counter (PC) from the vector table, clears the

trace bit in EXR to 0, and sets the interrupt mask bits in CCR and EXR to 1. The other CCR bits

and the general registers are not initialized. In particular, the stack pointer (ER7) is not initialized.

The stack pointer should therefore be initialized by an MOV.L instruction executed immediately

after a reset.

HD6432351 Arkusz danych(PDF) 68 Page - Renesas Technology Corp