MITSUBISHI MICROCOMPUTERS
3822 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
Register Contents
0016
Address
000116
(1)
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
0016
0016
0016
0016
0016
0016
000316
000516
000916
000B16
000D16
000F16
001616
001716
001916
001A16
001B16
002016
002116
002216
002316
002416
002516
002616
002716
002816
002916
002A16
003416
003816
003916
003A16
003B16
003C16
003D16
003E16
003F16
(PS)
(2)
(3)
(4)
(5)
(6)
(7)
0
1
1
0
0
1
0
0
1
0
0
0
1
0
0
0
1
0
0
1
0
0
(8)
0016
0
(9)
PULL register B
(10)
(11)
(12)
(13)
(14)
(15)
(16)
(17)
(18)
(19)
(20)
(21)
(22)
(23)
(24)
(25)
(26)
(27)
(28)
(29)
(30)
(31)
(32)
(33)
(34)
Sirial I/O status register
Sirial I/O control register
UART control register
Timer X(Low)
0016
0
FF16
FF16
FF16
FF16
FF16
0116
FF16
0016
0016
0016
0016
1
Timer X(High)
Timer Y(Low)
Timer Y(High)
Timer 1
Timer 2
Timer 3
Timer X mode register
Timer Y mode register
Timer 123 mode register
φ output control register
A-D control register
Segment output enable register
LCD mode register
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0016
0016
0016
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
1
0016
0016
0016
0016
1
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
Contents of address FFFD16
Contents of address FFFC16
(PCH)
(PCL)
Note: The contents of all other registers and RAM are undefined after reset, so they must be
initialized by software.
ꢀ: undefined
Fig. 41 Initial status of microcomputer after reset
42
MITSUBISHI [ Mitsubishi Group ]
