M37733 MITSUBISHI [Mitsubishi Electric Semiconductor], M37733 Datasheet - Page 14

• Manufacturer Part Number: M37733
• Description: 16-BIT CMOS MICROCOMPUTER
• Manufacturer: MITSUBISHI [Mitsubishi Electric Semiconductor]

RESET CIRCUIT
The microcomputer is released from the reset state when the
pin is returned to “H” level after holding it at “L” level with the power
source voltage at 5 V ± 10 %. Program execution starts at the address
formed by setting address A
of address FFFF
Figure 12 shows the status of the internal registers during reset.
Figure 13 shows an example of a reset circuit. If the stabilized clock
Fig. 12 Microcomputer internal status during reset
14
A-D control register 0
A-D control register 1
UART 0 transmit/receive
UART 1 transmit/receive
Count start flag
One- shot start flag
Up-down flag
Timer A0 mode register
Timer A1 mode register
Timer A2 mode register
Timer A3 mode register
Timer A4 mode register
Timer B0 mode register
Timer B1 mode register
Timer B2 mode register
Watchdog timer register
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
UART 0 transmit/receive mode register
UART 1 transmit/receive mode register
UART 1 transmit/receive
UART 0 transmit/receive
Processor mode register 0
Processor mode register 1
control register 0
control register 0
control register 1
control register 1
16
, and A
7
– A
23
– A
0
to the contents of address FFFE
16
(60
Address
(04
(05
(08
(09
(0C
(0D
(10
(11
(14
(30
(38
(34
(3C
(35
(3D
(40
(42
(44
(56
(57
(58
(59
(5C
(5D
(1E
(1F
(5A
(5B
(5E
(5F
to 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
16
16
16
16
16
•••
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
16
)
)
)
)
)
)
)
)
)
)
•••
•••
•••
•••
•••
•••
•••
•••
•••
•••
•••
•••
•••
•••
•••
•••
•••
•••
•••
•••
•••
•••
•••
•••
•••
•••
•••
•••
•••
•••
, A
0 0
0 0
0 0
0 0
0 0
0 0 1
0 0 1
0 0 1
15
– A
0 0
0
0 0
0 0
0 0
0 0
FFF
8
00
00
00
00
00
00
00
00
00
00
00
00
00
0
00
00
00
00
00
0 0 0
0
to the contents
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
0 0 0 0
0
0
0 0
0 0
0 0
0 0
0 0
1 0
1 0
? ? ?
0 0
0 0
0
0
0
0
1 1
1 0
1 0
_____
RESET
0
0
0
0
0
16
.
Contents of other registers and RAM are undefined during reset. Initialize them by software.
Watchdog timer frequency selection flag
Waveform output mode register
UART2 transmit/receive mode register
Oscillation circuit control register 0
Port function control register
Serial transmit control register
A-D/UART2 trans./rece. interrupt control register
UART 0 receive interrupt control register
UART 1 receive interrupt control register
Timer A0 interrupt control register
Timer A1 interrupt control register
Timer A2 interrupt control register
Timer A3 interrupt control register
Timer A4 interrupt control register
Timer B0 interrupt control register
Timer B1 interrupt control register
Timer B2 interrupt control register
INT
INT
Processor status register (PS)
Program counter (PC
Program counter (PC
Data bank register (DT)
UART2 transmit/receive control register 0
UART2 transmit/receive control register 1
Oscillation circuit control register 1
UART 0 transmission interrupt control register
UART 1 transmission interrupt control register
INT
Program bank register (PG)
Direct page register (DPR)
0
1
2
/Key input interrupt control register
is input from the external to the main-clock oscillation circuit, the reset
input voltage must be 0.9 V or less when the power source voltage
reaches 4.5 V. If a resonator/oscillator is connected to the main-clock
oscillation circuit, change the reset input voltage from “L” to “H” after
the main-clock oscillation is fully stabilized.
interrupt control register
interrupt control register
L
H
)
)
MITSUBISHI MICROCOMPUTERS
16-BIT CMOS MICROCOMPUTER
Address
(61
(62
(64
(68
(69
(6C
(6D
(6F
(70
(71
(72
(73
(74
(75
(76
(77
(78
(79
(7C
(7D
(7F
(6E
(7A
(7B
(7E
0
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
0
16
16
16
16
16
16
16
16
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
•••
•••
•••
•••
•••
•••
•••
•••
•••
•••
•••
•••
•••
•••
•••
•••
•••
•••
•••
•••
•••
•••
•••
•••
•••
0
M37733S4BFP
0
0
?
0
Content of FFFF
Content of FFFE
0
0
0000
0
?
0
0 0
0
0
0
0
0
0
0 0
16
00
00
00
0
0
0
0
0
0
0
0
16
16
16
0
1
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
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
1 ? ?
0
0
0
0
1
16
16
0
0
0
0
0
1