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7906 датащи(PDF) 49 Page - Renesas Technology Corp

номер детали 7906
подробное описание детали  16-BIT SINGLE-CHIP MICROCOMPUTER
PDF  531 Pages
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производитель  RENESAS [Renesas Technology Corp]
домашняя страница  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

7906 датащи(HTML) 49 Page - 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
1
?
: “0” immediately after reset.
: “1” immediately after reset.
: Undefined immediately after reset.
Data bank register (DT)
0016
b7
b0
Program bank register (PG)
0016
b7
b0
Program counter (PC)
Contents at address FFFE16
Contents at address FFFF16
b7
b0
b15
b8
Direct page register 0 (DPR0)
0016
b7
b0
0016
b15
b8
Processor status register (PS)
0
0
00
0
0
1
b7
b0
b15
b8
NV
mx
D
IZ
C
IPL
?
??
?
Stack pointer (S)
FF16
b7
b0
0F16
b15
b8
Index register Y (Y)
?
b7
b0
?
b15
b8
Index register X (X)
?
b7
b0
?
b15
b8
Accumulator B (B)
?
b7
b0
?
b15
b8
Accumulator A (A)
?
b7
b0
?
b15
b8
Register name
State immediately after reset
: “0” immediately after reset.
Fix this bit to “0.”
Direct page register i (DPRi)
?
b7
b0
?
b15
b8
(i = 1 to 3)
0
0
0
0
0
0



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