7906 datasheet(49/531 Pages) RENESAS

tên linh kiện	7906

Giải thích chi tiết về linh kiện	16-BIT SINGLE-CHIP MICROCOMPUTER

PDF	531 Pages

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nhà sản xuất	RENESAS [Renesas Technology Corp]

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RESET

7906 Group User’s Manual Rev.2.0

3-6

3.3 State of internal area

Figure 3.3.1 shows the state of CPU registers immediately after reset. Figures 3.3.2 to 3.3.9 show the state

of the SFR and internal RAM areas immediately after reset.

3.3 State of internal area

Fig. 3.3.1 State of CPU registers immediately after reset

: “0” immediately after reset.

: “1” immediately after reset.

: Undefined immediately after reset.

Data bank register (DT)

0016

Program bank register (PG)

0016

Program counter (PC)

Contents at address FFFE16

Contents at address FFFF16

b15

Direct page register 0 (DPR0)

0016

b15

Processor status register (PS)

b15

IPL

Stack pointer (S)

FF16

0F16

b15

Index register Y (Y)

b15

Index register X (X)

b15

Accumulator B (B)

b15

Accumulator A (A)

b15

State immediately after reset

: “0” immediately after reset.

Fix this bit to “0.”

Direct page register i (DPRi)

b15

(i = 1 to 3)

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