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參數(shù)資料
| 型號： | M30240E3-XXXFP |
| 廠商： | Mitsubishi Electric Corporation |
| 英文描述： | SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER |
| 中文描述： | 單片16位CMOS微機 |
| 文件頁數(shù)： | 140/142頁 |
| 文件大?。?/td> | 1637K |
| 代理商： | M30240E3-XXXFP |
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1-140
Mitsubishi microcomputers
M30240 Group
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
Preliminary Specifications REV. E
Specifications in this manual are tentative and subject to change
USB Transceiver
5.4 USB Transceiver
When using the on-chip voltage converter to supply the necessary 3.3V to the driver circuit, a capac-
itor network must be connected between Ext. Cap (pin 6) and V
SS
(pin 13). Two capacitors are re-
quired as shown in Figure 1.122. The high frequency 0.1
μ
F
capacitor should bean X7R type or better.
The low frequency decoupling capacitor of 2.2
μ
F
should be of tantalum di-electric or better. The start-
up time for this value of the capacitor is 3.2 ms, approximately (1ms/
μ
F
) + 1 ms.
After enabling the on-chip voltage converter, a certain amount of time must pass before a wait or stop
clock instruction is executed. The amount of time is given by (C+1) ms, when C is the value in
μ
F
of
the external capacitance connected to the Ext. Cap pin. For example, if the external capacitance is
2.2
μ
F
, at least 3.2 ms must elapse from the time that the on-chip voltage converter is enabled until a
WAIT instruction or STOP command (CM10 = 1) is executed.
In order to meet the impedance matching requirements of the USB Specification, a 33
resistor must
be added to USB D+ (pin 9) and to USB D- (pin 10). In addition, capacitors connected between USB
D+ and USB D- or USB D+/D- and Vss may need to be added for rise/fall time matching and edge
control. These capacitors should be placed after the 33
resistors. Their configuration and values
will depend on the PCs layout. The placement of external components is illustrated in Figure 1.122.
‘
Figure 1.122: Configuration of External USB components
33
33
+
_
D+
D-
XCV_Vm_in
XCV_Vp_in
XCV_Rxd
XCV_Vp_out
XCV_Suspend
XCV_Vm_out
XCV_Txen_n
Transceiver
USB_Vp_out
USB_Txen_n
USB_Vm_out
USB_Suspend
USB_Rxd
USB_Vp_in
USB_Vm_in
USB Block
Voltage Converter
2.2
μ
F
10%
0.1
μ
F 10%
Ext Cap
22 pF
=
=
22 pF
33 pF
(Note)
Note: Capacitor values and configuration may depend on PCB layout.
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| M30240E4 | 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER |
| M30240E4-XXXFP | 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER |
| M30240E5 | 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER |
| M30240E5-XXXFP | 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER |
| M30240E6 | 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER |
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