M38062M3-156FP MITSUBISHI [Mitsubishi Electric Semiconductor], M38062M3-156FP Datasheet - Page 27

• Manufacturer Part Number: M38062M3-156FP
• Description: SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
• Manufacturer: MITSUBISHI [Mitsubishi Electric Semiconductor]

Reset Circuit
To reset the microcomputer, the RESET pin should be held at an
“L” level for 2 s or more. Then the RESET pin is returned to an
“H” level (Note 1), reset is released. Internal operation does not
begin until after 8 to 13 X
reset is completed, the program starts from the address contained
in address FFFD
der byte).
Make sure that the reset input voltage is less than 0.8 V for V
4.0 V (Note 2).
Note 1. The power source voltage should be between the follow-
Note 2. Reset input voltage is less than the following voltage.
Fig. 22 Example of reset circuit
Power source
Reset input
voltage
voltage
ing voltage.
• Between 3.0 V and 5.5 V for standard version
• Between 4.0 V and 5.5 V for extended operating tem-
• Between 2.7 V and 5.5 V for high-speed version
• 0.6 V for V
• 0.8 V for V
• 0.54 V for V
perature version
M51953AL
1
3
16
(high-order byte) and address FFFC
0V
0V
CC
CC
CC
= 3.0 V
= 4.0 V
5
4
0.1
IN
= 2.7 V
clock cycles are completed. After the
F
______
______
4.0V
0.8V
RESET
V
V
3806 group
CC
SS
16
(low-or-
CC
of
Fig. 23 Internal status of microcomputer after reset
(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)
Note.
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
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
Serial I/O1 status register
Serial I/O1 control register
UART control register
Serial I/O2 control register
Prescaler 12
Timer 1
Timer 2
Timer XY mode register
Prescaler X
Timer X
Prescaler Y
Timer Y
AD/DA control register
D-A1 conversion register
D-A2 conversion register
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
: Undefined
: The initial values of CM
CNV
The contents of all other registers and RAM are undefined
after a reset, so they must be initialized by software.
SS
pin.
MITSUBISHI MICROCOMPUTERS
(0001
(0003
(0005
(0007
(0009
(000B
(000D
(000F
(0011
(0019
(001A
(001B
(001D
(0020
(0021
(0022
(0023
(0024
(0025
(0026
(0027
(0034
(0036
(0037
(003A
(003B
(003C
(003D
(003E
(003F
1
are determined by the level at the
Address
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
(PC
(PC
) • • •
) • • •
) • • •
) • • •
) • • •
) • • •
) • • •
) • • •
) • • •
) • • •
) • • •
) • • •
) • • •
) • • •
) • • •
) • • •
) • • •
) • • •
) • • •
) • • •
) • • •
) • • •
) • • •
) • • •
) • • •
) • • •
) • • •
) • • •
) • • •
) • • •
(PS)
3806 Group
H
L
)
)
Contents of address FFFD
Contents of address FFFC
1 0 0 0 0 0
1 1 1 0 0 0
0 0 0 0 1 0
0 0 0 0 0 0
Register contents
00
00
00
00
00
00
00
00
00
00
00
FF
01
FF
00
FF
FF
FF
FF
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
16
16
16
16
16
16
16
1
0
0
0
16
0
0
0
0
16
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