H8SSLASH2214 datasheet(90/936 Pages) RENESAS

Il numero della parte	H8S/2214

Spiegazioni elettronici	16-Bit Single-Chip Microcomputer H8S Family/H8S/2200 Series

PDF	936 Pages

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Produttore elettronici	RENESAS [Renesas Technology Corp]

Homepage	http://www.renesas.com

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Section 2 CPU

Rev.4.00 Sep. 18, 2008 Page 30 of 872

REJ09B0189-0400

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.

H8S/2214 Scheda tecnica(PDF) 90 Page - Renesas Technology Corp