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Reset
Preliminary Specifications REV.B
Specifications in this manual are tentative and subject to change.
Mitsubishi microcomputers
M16C/80 (144-pin version) group
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
19
Figure 1.4.4. Device's internal status after a reset is cleared
Trigger select flag
Up-down flag
Timer A0 mode register
Timer A1 mode register
Timer A2 mode register
Timer B0 mode register
Timer B1 mode register
Timer B2 mode register
Timer A3 mode register
Timer A4 mode register
One-shot start flag
UART1 transmit/receive control register 0
UART1 transmit/receive control register 1
UART transmit/receive control register 2
DMA0 cause select register
DMA1 cause select register
UART0 transmit/receive mode register
UART0 transmit/receive control register 0
UART0 transmit/receive control register 1
UART1 transmit/receive mode register
A-D control register 2
A-D control register 0
A-D control register 1
Count start flag
Clock prescaler reset flag
x : Nothing is mapped to this bit
: Undefined
The content of other registers and RAM is undefined when the microcomputer is reset. The initial values
must therefore be set.
Port P0 direction register
Port P1 direction register
Port P2 direction register
Port P3 direction register
Port P4 direction register
Port P5 direction register
Port P6 direction register
Port P7 direction register
Port P8 direction register
Port P9 direction register
Port P10 direction register
Pull-up control register 0
Pull-up control register 1
Pull-up control register 2
Port control register
Frame base register (FB)
Address registers (A0/A1)
Interrupt table register (INTB)
User stack pointer (USP)
Interrupt stack pointer (ISP)
Static base register (SB)
Flag register (FLG)
Data registers (R0/R1/R2/R3)
(78)
(77)
(79)
(80)
(83)
(84)
(85)
(86)
(82)
(76)
(81)
(90)
(91)
(92)
(93)
(94)
(95)
(87)
(88)
(89)
(96)
(74)
(73)
(71)
(72)
(68)
(69)
(70)
(75)
(97)
(99)
(98)
(103)
(104)
(105)
(102)
(101)
(100)
(114)
(115)
(116)
(117)
(118)
(119)
(120)
(121)
(122)
(123)
(124)
(125)
(126)
(127)
(132)
(130)
(131)
(128)
(129)
(132)
(136)
(137)
(138)
(133)
(135)
(142)
(143)
(139)
(141)
(140)
(109)
(110)
(111)
(112)
(113)
(106)
(107)
(033D
16
)···
(0340
16
)···
(0341
16
)···
(0342
16
)···
(0357
16
)···
(0358
16
)···
(0359
16
)···
(0344
16
)···
(0356
16
)···
(033C
16
)···
02
16
00
16
00
16
(0343
16
)···
00
16
00
16
(035D
16
)···
(0360
16
)···
(0364
16
)···
(0365
16
)···
(0368
16
)···
(036C
16
)···
(035A
16
)···
(035B
16
)··· 0 0
0 0 0 0
(035C
16
)··· 0 0
0 0 0 0
00
16
08
16
02
16
(036D
16
)···
0
0
1
0
0 0 0
(0337
16
)···
00
16
(032C
16
)···
(0336
16
)···
(032D
16
)···
(0325
16
)···
(0327
16
)···
(0328
16
)···
08
16
00
16
00
16
00
16
(031F
16
)···
0 0 0
0 0 0
02
16
00
16
(0338
16
)···
00
16
0
0 0 0
0 0 0
0
0 0 0
0 0 0
0
0 0 0
0 0 0
0
0 0 0
0 0 0
0
0 0 0
0 0 0
0
0 0
0 0 0 0
00
16
08
16
02
16
(0370
16
)···
0 0
0 0 0 0
0
0 0 0
0 0 0
0
0 0 0
0 0 0
(0379
16
)···
(0378
16
)··· 0
0
0 0 0
0
(0396
16
)···
(0397
16
)···
00
16
(108)D-A control register
(039C
16
)···
00
16
0
0 0 0
0
(0394
16
)···
0 0 0
0 0 0
0
0 0 0
0 0 0
(037B
16
)···
(037A
16
)··· 0
00
16
0
0
0
0 0
(03C2
16
)···
(03C3
16
)···
(03C6
16
)···
(03C7
16
)···
(03CA
16
)···
(03DA
16
)···
(03DB
16
)···
(03E2
16
)···
(03E3
16
)···
(03E6
16
)···
(03E7
16
)···
(03EA
16
)···
(03EB
16
)···
(03F0
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
0000
16
000000
16
000000
16
(03F1
16
)···
X0
16
0
(03FF
16
)···
000000
16
000000
16
000000
16
0000
16
00
16
000000
16
0
0
0
0
0
0 0
0
0
0
0
0
0
0 0
(03AF
16
)···
(03B0
16
)···
(03B2
16
)···
(03B3
16
)···
(03B4
16
)···
(03B5
16
)···
(03B6
16
)···
00
16
0
0
0
0
0
0 0
(03B1
16
)···
0
0 0
0
0
0
0
Interrupt cause select register
UART3 transmit/receive control register 1
UART3 transmit/receive control register 0
UART3 transmit/receive mode register
UART3 special mode register 3
UART3 special mode register
UART2 transmit/receive control register 1
UART2 transmit/receive control register 0
UART2 transmit/receive mode register
UART2 special mode register 2
UART2 special mode register
DMA2 cause select register
DMA3 cause select register
Pull-up control register 3
DMA mode register (DMD0/DMD1)
DMA transfer count register (DCT0/DCT1)
DMA transfer count reload register
(DRC0/DRC1)
DMA memory address register (DMA0/DMA1)
DMA SFR address register (DSA0/DSA1)
DMA memory address reload register
(DRA0/DRA1)
Function select register C
Function select register A0
Function select register B0
Function select register A1
Function select register A2
Function select register A3
Function select register B1
Function select register B2
(0326
16
)···
00
16
UART3 special mode register 2
(0335
16
)···
UART2 special mode register 3
(03B7
16
)···
Function select register B3
0 0 0
0
0
0
0
(146)
(147)
(145)
(144)
Port P11 direction register
(03CB
16
)···
Port P12 direction register
(03CE
16
)···
00
16
Port P13 direction register
(03CF
16
)···
00
16
Port P14 direction register
(03D2
16
)···
Port P15 direction register
(03D3
16
)···
00
16
0
0
0
0 0
0
0
0
0
0
0 0
0
0
(03DC
16
)···
00
16
Pull-up control register 4
(148)
(152)
(153)
(149)
(151)
(150)
(0377
16
)···
Flash memory control register 0
(Note)
0
0 0 0 1
0
(102)
(101)
0
(0376
16
)···
Flash memory control register 1
(Note)
Note :This register exists in the flash memory version.