m37905 Renesas Electronics Corporation., m37905 Datasheet - Page 51

• Manufacturer Part Number: m37905
• Description: Mitsubishi 16-bit Single-chip Microcomputer 7700 Family / 7900 Series
• Manufacturer: Renesas Electronics Corporation.

of the SFR and internal RAM areas immediately after reset.
RESET
3.3 State of internal area
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
Fig. 3.3.1 State of CPU registers immediately after reset
3-6
0
1
?
Processor status register (PS)
: “0” immediately after reset.
: “1” immediately after reset.
: Undefined immediately after reset.
Program bank register (PG)
Direct page register 0 (DPR0)
Direct page register i (DPRi)
Data bank register (DT)
Program counter (PC)
Index register X (X)
Index register Y (Y)
Accumulator A (A)
Accumulator B (B)
Register name
Stack pointer (S)
(i = 1 to 3)
b15
b15
b15
b15
b15
b15
b15
b15
b15
0
Contents at address FFFF
7905 Group User’s Manual Rev.1.0
0
0
0
0
0F
00
?
?
?
?
?
16
16
State immediately after reset
0
: “0” immediately after reset.
Fix this bit to “0.”
0
IPL
0
16
b8
b8
b8
b8
b8
b8
b8
b8
b8
0
b7
b7
b7
b7
b7
b7
b7
b7
b7
b7
b7
N
?
Contents at address FFFE
V
?
m
0
0
x
00
00
00
?
?
?
?
?
FF
16
16
16
D
0
16
1
I
?
Z
16
b0
b0
b0
b0
b0
b0
b0
b0
b0
b0
b0
C
?