
MITSUBISHI MICROCOMPUTERS
38B5 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
56
PRELIMINARY
Notice: This s not a final specification.
Some parametric imits are subject to change.
Fig. 67  Internal Status at Reset
00
16
00
16
3F
16
FF
16
FF
16
002A
16 
002B
16 
002C
16 
002D
16 
002E
16 
002F
16 
0032
16 
X: Not fixed
Since the initial values for other than above mentioned registers and RAM contents are indefinite at reset, they must be set.
Address   Register contents
Address   Register contents
00
16
00
16
00
16
00
16
00
16
00
16
00
16
00
16
00
16
00
16
00
16
00
16
00
16
FF
16
FF
16
FF
16
00
16
00
16
00
16
0000
16 
0001
16 
0002
16 
0004
16 
0005
16 
0006
16 
0008
16 
0009
16 
000A
16 
000B
16 
000C
16 
000D
16 
000E
16 
000F
16 
0010
16 
0011
16 
0012
16 
0013
16 
0017
16 
0019
16 
001A
16 
001C
16 
001D
16 
001E
16 
0020
16 
0021
16 
0022
16 
0023
16 
0024
16 
0025
16 
0026
16 
0028
16 
Timer 4
Port P0 
Port P0 direction register
Port P1 
Port P2 
Port P2 direction register
Port P3 
Port P4
Port P4 direction register
Port P5 
Port P5 direction register
Port P6 
Port P6 direction register
Port P7 
Port P7 direction register
Port P8 
Port P8 direction register
UART control register
Serial I/O1 control register 1
Serial I/O1 control register 2
Serial I/O1 control register 3
Serial I/O2 control register
Serial I/O2 status register
Timer 1
Timer 2
Timer 3
Timer 5
Timer 6
PWM control register
Timer 12 mode register
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
(9)
(10)
(11)
(12)
(13)
(14)
(15)
(16)
(17)
(18)
(19)
(20)
(21)
(22)
(23)
(24)
(25)
(26)
(27)
(28)
(29)
(30)
(31)
(32)
00
16
0029
16 
Timer 34 mode register
(33)
(35)
(36)
(37)
(38)
(39)
(40)
(41)
Timer 56 mode register
Watchdog timer control register
Timer X (low-order)
Timer X (high-order)
Timer X mode register 1
Timer X mode register 2
Interrupt interval determination 
control register
A-D control register
00
16
00
16
00
16
00
16
00
16
00
16
00
16
FF
16
00
16
00
16
0039
16 
003A
16 
003B
16 
003C
16 
003D
16 
003E
16 
003F
16 
0EF0
16 
0EF1
16 
0EF2
16 
0EF3
16 
0EF4
16 
0EF5
16 
0EF6
16 
0EF7
16 
0EF9
16 
0EFA
16 
0EFB
16 
0EFC
16 
0EFD
16 
(42)
(43)
(44)
(45)
(46)
(47)
(48)
(49)
(50)
(51)
(52)
(53)
(54)
(55)
(56)
(57)
(58)
(59)
(60)
 Port P8FLD output control register
FLDC mode register
Interrupt source switch register
Interrupt edge selection register
CPU mode register
Interrupt request register 1
Interrupt request register 2
Interrupt control register 1
Interrupt control register 2
Pull-up control register 1
Pull-up control register 2
P1FLDRAM write disable register
P3FLDRAM write disable register
Tdisp time set register
Toff1 time set register
Toff2 time set register
Port P0FLD/port switch register
Port P2FLD/port switch register
Port P8FLD/port switch register
FF
16
00
16
00
16
00
16
00
16
00
16
00
16
10
16
Port P9 
Port P9 direction register
(34)
FFFC
16
 contents
(PS)
(PC
H
)
(PC
L
)
(61)
(62)
(63) Program counter
Buzzer output control register
Processor status register
FFFD
16
 contents
1
0031
16 
00
16
00
16
00
16
00
16
80
16
00
16
00
16
00
16
00
16
80
16
FF
16
01
16
FF
16
0 1 0 0 1 0
0
0
00
16
00
16
00
16
00
16