![](http://datasheet.mmic.net.cn/30000/M30621MCA-XXXGP_datasheet_2359037/M30621MCA-XXXGP_18.png)
Mitsubishi microcomputers
M16C / 62A Group (80-pin)
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
Reset
17
(038316)
Trigger select flag
(038416)
Up-down flag
(62)
(61)
(039616)
Timer A0 mode register
(63)
(039716)
Timer A1 mode register
(64)
(039816)
Timer A2 mode register
(67)
(039B16)
Timer B0 mode register
(68)
(039C16)
Timer B1 mode register
(69)
(039D16)
Timer B2 mode register
(70)
(65)
(039916)
Timer A3 mode register
(66)
(039A16)
Timer A4 mode register
(038216)
One-shot start flag
(60)
0016
0
0016
0?
0 0 00
00 ?
0 00 0
00 ?
0 00 0
(03AC16)
UART1 transmit/receive control register 0
(75)
(03AD16)
UART1 transmit/receive control register 1
(76)
(03B016)
UART transmit/receive control register 2
(77)
0
(03A016)
UART0 transmit/receive mode register
(71)
(03A416)
UART0 transmit/receive control register 0
(72)
(03A516)
UART0 transmit/receive control register 1
(73)
0016
00 0
1 00 0
00 0
0 01 0
0
(03A816)
UART1 transmit/receive mode register
(74)
0016
00 0
1 00 0
00 0
0 01 0
0
00 0 0 0
0
(03D716)
A-D control register 1
0016
0
00
00 0 0
Count start flag
(038016)
0016
0
(038116)
Clock prescaler reset flag
(58)
(59)
x : Nothing is mapped to this bit
? : Undefined
The content of other registers are undefined when the microcomputer is reset. The initial values must therefore be set.
The RAM is undefined at power on. The initial values must therefore be set. When a reset signal is applied while the CPU is writing a value to the RAM,
the value may be set as unknown due to the termination of the CPU access.
Note: This register is only exist in flash memory version.
(03E216)
Port P0 direction register
(84)
(03E316)
Port P1 direction register
(85)
(03E616)
Port P2 direction register
(86)
(03E716)
Port P3 direction register
(87)
(03EA16)
Port P4 direction register
(88)
(03EB16)
Port P5 direction register
(89)
(03EE16)
Port P6 direction register
(90)
(03EF16)
Port P7 direction register
(91)
(03F216)
Port P8 direction register
(92)
(03F316)
Port P9 direction register
(93)
(03F616)
Port P10 direction register
(94)
(03FC16)
Pull-up control register 0
(95)
(03FD16)
Pull-up control register 1
(96)
(03FE16)
Pull-up control register 2
(97)
Port control register
(98)
0016
00
0
00 0
(03DC16)
D-A control register
(83)
0016
Frame base register (FB)
(101)
Address registers (A0/A1)
(100)
Interrupt table register (INTB)
(102)
User stack pointer (USP)
(103)
Interrupt stack pointer (ISP)
(104)
Static base register (SB)
(105)
Flag register (FLG)
(106)
000016
0000016
000016
Data registers (R0/R1/R2/R3)
(99)
000016
(03FF16)
(03B616)
0
(107)
(03B716)
(03BA16)
DMA1 cause select register
0016
(03D416)
A-D control register 2
(80)
(03D616)
A-D control register 0
(81)
(82)
0
00 0
0 ?? ?
0
00 00
(03B816)
DMA0 cause select register
0016
00 0 0 1
0
??? ?
? ? ?
(108)
Flash memory control register 1 (Note)
(78)
Flash memory control register 0 (Note)
(79)
?
0
?
0 000
?
Figure 1.6.4. Device's internal status after a reset is cleared