參數(shù)資料
型號(hào)： M37905M8C-XXXFP
廠商： Mitsubishi Electric Corporation
英文描述： 16 BIT CMOS MICROCOMPUTER
中文描述： 16位CMOS微機(jī)
文件頁數(shù)： 78/102頁
文件大?。?/td> 881K
代理商： M37905M8C-XXXFP
78
M37905M4C-XXXFP, M37905M4C-XXXSP
M37905M6C-XXXFP, M37905M6C-XXXSP
M37905M8C-XXXFP, M37905M8C-XXXSP
PRELIMINARY
Notice: This is not a final specification.
Some parametric limits are subject to change.
16-BIT CMOS MICROCOMPUTER
MITSUBISHI MICROCOMPUTERS
Fig. 88 Microcomputer internal register’s status at reset (2)
RESET CIRCUIT
While the power source voltage satisfies the recommended operat-
ing condition, reset state is removed if pin RESET’s level returns
from the stabilized “L” level to the “H” level. As a result, program ex-
ecution starts from the reset vector address. This reset vector ad-
dress is expressed as shown below:
A
23
to A
16
= 00
16
A
15
to A
8
= Contents at address FFFF
16
A
7
to A
0
= Contents at address FFFE
16
Figures 87 and 88 show the microcomputer internal register’s status
at reset, and Figure 89 shows an operation example of the reset cir-
cuit. Apply “L” level voltage to pin RESET for a period (10 μs or more)
under the following conditions:
Pin Vcc’s level satisfies the recommended operating condition.
Oscillator’s operation has been stabilized.
Fig. 89 Operation example of reset circuit (Note that proper evalua-
tion is necessary in the system development stage.)
(DB
16
)
···
(A6
16
)
···
(A8
16
)
···
(A9
16
)
···
(AA
16
)
···
(D7
16
)
···
(AC
16
)
···
(AE
16
)
···
(C4
16
)
···
(D6
16
)
···
(D8
16
)
···
(D9
16
)
···
(DA
16
)
···
0 0 0
00
16
00
16
0000
16
FFF
16
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
(F5
16
)
···
(F6
16
)
···
(F7
16
)
···
0
0 0
0 0 0
(F9
16
)
···
0 0 0
(FE
16
)
···
0
0 0
0 0 0
(FD
16
)
···
(F8
16
)
···
(FF
16
)
···
0
0 0
00
16
00
16
00
16
00
16
00
16
00
16
0 0 0 0
0 0 0 0
00
16
00
16
00
16
(A0
16
)
···
(A2
16
)
···
(A4
16
)
···
00
16
00
16
00
16
0 0
1
0
0
0 0 0
(B4
16
)
···
0
0 0 0
0
0 1 0
(B5
16
)
···
(B0
16
)
···
00
16
0 0
0
0 0 1
0
1 1 1
(BC
16
)
···
0 0 0
(DD
16
)
···
(DE
16
)
···
00
16
00
16
(DC
16
)
···
00
16
(DF
16
)
···
00
16
0 0 0 0
0 0 0 0
(F1
16
)
···
(F2
16
)
···
Waveform output mode register
Three-phase output data register 0
Three-phase output data register 1
Pulse output control register
Pulse output data register 0
Pulse output data register 1
UART2 transmit/receive mode register
UART2 transmit/receive control register 0
UART2 transmit/receive control register 1
UART2 transmit interrupt control register
UART2 receuve interrupt control register
Position-data-retain function control register
Serial I/O pin control register
Port P2 pin function control register
Note:
The contents of the other registers and RAM are undefined at reset and must be initialized by software.
Timer A6 mode register
Clock control register 0
A-D control register 2
Up-down register 1
Timer A5 mode register
Timer A7 mode register
Timer A8 mode register
Timer A9 mode register
Address
Address
Contents at address FFFF
16
Contents at address FFFE
16
Program bank register PG
Program counter PC
H
Program counter PC
L
Direct page registers DPR0 to DPR3
Data bank register DT
Stack pointer
Processor status register PS
INT
7
interrupt control register
Timer A5 interrupt control register
Timer A6 interrupt control register
Timer A7 interrupt control register
Timer A9 interrupt control register
INT
6
interrupt control register
INT
5
interrupt control register
Timer A8 interrupt control register
Comparator function select register 0
Comparator function select register 1
Comparator result register 0
Comparator result register 1
V
CC
RESET
Power on
V
CC
level
0.2V
CC
level
10
μ
s
Oscillation stabilized
X
IN
0V
0V
0V
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