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參數(shù)資料
| 型號： | M37510M8156FP |
| 廠商： | Mitsubishi Electric Corporation |
| 英文描述： | SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER |
| 中文描述： | 單芯片8位CMOS微機 |
| 文件頁數(shù)： | 29/43頁 |
| 文件大小： | 614K |
| 代理商： | M37510M8156FP |
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29
7510 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
MITSUBISHI MICROCOMPUTERS
RESET CIRCUIT
To reset the microcomputer, RESET pin should be held at “L” level
for 2
μ
s or more. Then RESET pin is returned to “H” level (the
power source voltage should be between 2.5 V and 5.5 V, and X
IN
oscillation width is stable), reset is released. In order to give the
X
IN
clock time to stabilize, internal operation does not begin until
after about 8000 X
IN
clock cycles are complete. After the reset is
completed, the program starts from the address contained in ad-
dress FFFD
16
(high-order) and address FFFC
16
(low-order).
Make sure that the reset input voltage is less than 0.5 V for V
CC
of
3.0 V at f(X
IN
) = 8.0 MHz.
Fig. 26 Example of reset circuit
Fig. 27 Internal status of microcomputer after reset
Power source
voltage 0V
Poweron
3.0V
Reset input
voltage 0V
0.5V
V
CC
RESET
V
SS
7510 group
f(X
IN
) = 8.0MHz
3
1
5
4
0.1
μ
F
M51953AL
1 0 0 0 0 0 0 0
0019
16
(13) Serial I/O1 status register
00
16
0011
16
(12) Port P5 pull-up control register
00
16
0010
16
(11) Port P4 pull-up control register
00
16
000E
16
(9) Port P2 pull-up control register
00
16
000D
16
(8) Port P1 pull-up control register
00
16
000C
16
(7) Port P0 pull-up control register
00
16
000B
16
(6) Port P5 direction register
00
16
0009
16
(5) Port P4 direction register
00
16
0007
16
(4) Port P3 direction register
00
16
0005
16
(3) Port P2 direction register
00
16
0003
16
(2) Port P1 direction register
00
16
0001
16
(1) Port P0 direction register
00
16
000F
16
(10) Port P3 pull-up control register
00
16
001A
16
(14) Serial I/O1 control register
1 1 1 0 0 0 0 0
001B
16
(15) UART1 control register
FF
16
0020
16
(16) Timer X (low)
FF
16
0021
16
(17) Timer X (high)
FF
16
0022
16
(18) Timer Y (low)
FF
16
0023
16
(19) Timer Y (high)
FF
16
0024
16
(20) Timer 1
01
16
0025
16
(21) Timer 2
FF
16
0026
16
(22) Timer 3
00
16
0027
16
(23) Timer X mode register
00
16
0028
16
(24) Timer Y mode register
00
16
0029
16
(25) Timer 123 mode register
1 0 0 0 0 0 0 0
0031
16
(26) Serial I/O2 status register
00
16
0032
16
(27) Serial I/O2 control register
1 1 1 0 0 0 0 0
0033
16
(28) UART2 control register
00
16
0037
16
(29) LCD contrast control register
00
16
0039
16
(30) LCD mode register
00
16
003A
16
(31) Interrupt edge selection register
0 1 0 0 1 1 0 0
003B
16
(32) CPU mode register
00
16
003C
16
(33) Interrupt request register 1
00
16
003D
16
(34) Interrupt request register 2
00
16
003E
16
(35) Interrupt control register 1
00
16
003F
16
(36) Interrupt control register 2
1
(PS)
(37) Processor status register
Contents of address
FFFD
16
(PC
H
)
(38) Program counter
Contents of address
FFFC
16
(PC
L
)
The contents of all other registers and RAM are undefined after
reset, so they must be initialized by software.
: Undefined
Note :
Register contents
Address
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