M38203M4 Datasheet, PDF (273/344 Pages) Mitsubishi Electric Semiconductor – 8-BIT SINGLE-CHIP MICROCOMPUTER

APPLICATION
2.10 Reset
2.10.2 Internal state of the microcomputer immediately after reset release
Figure 2.9.3 shows the internal state of the microcomputer immediately after reset release.
The contents of all other registers except registers in Figure 2.10.3 and internal RAM are undefined at
poweron reset.
Port P0 direction register
Port P1 direction register
Port P2 direction register
Port P4 direction register
Port P5 direction register
Port P6 direction register
Port P7 direction register
PULL register A
PULL register B
Serial I/O1 status register
Serial I/O1 control register
UART control register
Serial I/O2 control register
Timer X (low-order)
Timer X (high-order)
Timer Y (low-order)
Timer Y (high-order)
Timer 1
Timer 2
Timer 3
Timer X mode register
Timer Y mode register
Timer 123 mode register
φ output control register
Watchdog timer control register
Segment output enable register
LCD mode register
Interrupt edge selection register
CPU mode register
Interrupt request register 1
Interrupt request register 2
Interrupt control register 1
Interrupt control register 2
Processor status register
Program counter
Address
000116
000316
000516
000916
000B16
000D16
000F16
001616
001716
001916
001A16
001B16
001D16
002016
002116
002216
002316
002416
002516
002616
002716
002816
002916
002A16
003716
003816
003916
003A16
003B16
003C16
003D16
003E16
003F16
(PS)
(PCH)
(PCL)
b7 ^{Contents of register}
b1
0016
0016
0016
0016
0016
0016
0016
0 0 00 1 01 1
0016
1 00 0 0 00 0
0016
1 11 0 0 00 0
0016
FF16
FF16
FF16
FF16
FF16
0116
FF16
0016
0016
0016
0016
0 11 1 1 11 1
0016
0016
0016
0 10 0 1 00 0
0016
0016
0016
0016
XXX X X1X X
Contents of address FFFD16
Contents of address FFFC16
Notes X : Undefined
The contents of all other registers and internal RAM are undefined at
poweron reset, so they must be initialized by software.
Fig. 2.10.3 Internal state of microcomputer immediately after reset release
3820 GROUP USER’S MANUAL
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