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參數(shù)資料
| 型號： | M37753M8C |
| 廠商： | Mitsubishi Electric Corporation |
| 英文描述： | Single Chip 16 Bits CMOS Microcomputer(16位單片機(jī)) |
| 中文描述： | 單片微機(jī)16位的CMOS（16位單片機(jī)） |
| 文件頁數(shù)： | 61/109頁 |
| 文件大?。?/td> | 865K |
| 代理商： | M37753M8C |
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61
MITSUBISHI MICROCOMPUTERS
M37753M8C-XXXFP, M37753M8C-XXXHP
M37753S4CFP, M37753S4CHP
PRELIMINARY
Notice: This is not a final specification.
Some parametric limits are subject to change.
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
RESET CIRCUIT
Reset is released when the RESET pin is returned to “H” level after
holding it at “L” level while the supply voltage is at 5V ±10%. As the
result, program execution starts at the address formed by setting the
address A
23
–A
16
to 00
16
, A
15
–A
8
to the contents of address FFFF
16
,
and A
7
–A
0
to the contents of address FFFE
16
.
Figure 76 shows the status of the internal registers during reset.
Figure 77 shows an example of a reset circuit. When a stabilized
clock is input from the external to the oscillation circuit, the reset in-
put voltage must be held 0.9V or lower when the supply voltage
reaches 4.5V. When connecting a resonator to the oscillation circuit,
return the reset input voltage from “L” to “H” after the main-clock os-
cillation is fully stabilized
RESET
V
CC
V
CC
RESET
Power on
4.5V
0 V
0 V
0.9V
Fig. 77 Reset circuit example (perform careful evaluation at system
design before using)
INPUT/OUTPUT PINS
Ports P0 to P8 all have the direction register and each bit can be pro-
grammed for input or output. A pin becomes an output pin when the
corresponding bit of direction register is “1”, and an input pin when it
is “0”.
When a pin is programmed for output, the data is written to its port
latch and it is output to the output pin. When a pin is programmed for
output, the contents of the port latch is read instead of the value of
the pin. Accordingly, a previously output value can be read correctly
even when the output “H” voltage is lowered or the output “L” voltage
is raised owing to an external load and others.
A pin programmed as an input pin is floating, and the value input to
the pin can be read. When a pin is programmed as an input pin, the
data is written only in the port latch and the pin remains floating.
Additionally, ports P5
4
to P5
7
, P8
0
include pull-up transistors. The
pull-up function of ports is selected with bits 7 and 6 of the particular
function select register 1. Refer to the section on Interrupts for the
pull-up function.
Figures 78 and 79 show block diagrams of ports P0 to P8
0
in the
single-chip mode and E output.
Ports P0 to P4 are also used as pins of address, data and control
signals. Refer to the section on Processor mode for more details.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| M37754M6C | Single Chip 16 Bits CMOS Microcomputer(16位單片機(jī)) |
| M378T2953BG0-CC | DDR2 Unbuffered SDRAM MODULE |
| M378T3354BG | DDR2 Unbuffered SDRAM MODULE |
| M378T3354BG0-CC | DDR2 Unbuffered SDRAM MODULE |
| M378T6553BG0-CC | DDR2 Unbuffered SDRAM MODULE |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| M37753M8C-XXXFP | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER |
| M37753M8C-XXXHP | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER |
| M37753S4CFP | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER |
| M37753S4CHP | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER |
| M37754 | 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 16BIT CMOS MICROCOMPUTER |
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