M38197 Mitsubishi, M38197 Datasheet - Page 46

• Manufacturer Part Number: M38197
• Description: SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
• Manufacturer: Mitsubishi

Fig. VB-3 Internal status at reset
46
(1) Port P0
(2) Port P1
(3) Port P2
(4) Port P2 direction register
(5) Port P3
(6) Port P4
(7) Port P4 direction register
(8) Port P5
(9) Port P5 direction register
(10) Port P6
(11) Port P6 direction register
(12) Port P7
(13) Port P7 direction register
(14) Port P8
(15) Port P8 direction register
(16) Port P9
(17) Port PA
(18) Port PA direction register
(19) Port PB
(20) Port PB direction register
(21) Serial I/O1 control register
(22) Serial I/O automatic transfer
(23) Serial I/O automatic transfer
(24) Serial I/O2 control register
(25) Serial I/O3 control register
(26) Timer 1
(27) Timer 2
(28) Timer 3
(29) Timer 4
(30) Timer 5
Note :
control register
interval register
The contents of all other registers and RAM are undefined at reset, so set their initial values.
: Undefined
Address
(0000
(0002
(0004
(0005
(0006
(0008
(0009
(000A
(000B
(000C
(000D
(000E
(000F
(0010
(0011
(0012
(0014
(0015
(0016
(0017
(0019
(001A
(001C
(001D
(001E
(0020
(0021
(0022
(0023
(0024
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
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Register contents
00
00
00
0F
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
FF
01
FF
FF
FF
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
(31) Timer 6
(32) Timer 12 mode register
(33) Timer 34 mode register
(34) Timer 56 mode register
(35) D-A conversion register
(36) AD/DA control register
(37) Interrupt interval determination
(38) Port P0 segment/digit
(39) Port P2 digit/port switching
(40) Port P8 segment/port
(41) Port PA segment/port switch
(42) FLDC mode register 1
(43) FLDC mode register 2
(44) Zero cross detection control
(45) Interrupt edge selection register
(46) CPU mode register
(47) Interrupt request register 1
(48) Interrupt request register 2
(49) Interrupt control register 1
(50) Interrupt control register 2
(51) Processor status register
(52) Program counter
control register
switch register
register
switch register
register
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
MITSUBISHI MICROCOMPUTERS
Address
(0025
(0028
(0029
(002A
(002B
(002C
(0031
(0032
(0033
(0034
(0035
(0036
(0037
(0039
(003A
(003B
(003C
(003D
(003E
(003F
(PC
(PC
(PS)
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
H
L
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• • •
• • •
• • •
• • •
• • •
• • •
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• • •
• • •
• • •
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• • •
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3819 Group
Contents of address FFFD
0 1 0 0 1 0 0 0
Contents of address FFFC
Register contents
FF
00
00
00
00
10
00
00
00
00
00
00
00
00
00
00
00
00
00
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
1
16
16