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M 6 8 E V B 9 0 8 Q L 4
1 2 / 0 4 / 0 3
POWER SUPPLY
Input power is applied by external connection to the PWR power jack or LIN-J1/2 port
connectors. The input source is selected by the PWR_SEL option jumper. The regulator is
protected from reverse voltage application by diode D3 or D4. Input voltage is regulated to
+5V supply by VR1 and enabled to the development board circuits by the +5V_EN option
jumper installed. The POWER indicator will light when +5V is available.
PWR_SEL Option
The PWR_SEL option provides EVB board input power source selection between the LIN port
connectors and primary input PWR jack. Default position is jumper installed on pins 1-2 for
PWR jack input. The user may elect to move this option jumper to position 2-3 when applying
the LIN ports on a LIN network that provides the +V source.
+5V_EN Option
The +5V_EN option provides board power enabled or disabled control. Default position is
jumper installed on both pins. The user may elect to remove this option jumper when a
Cyclone development cable is applied so that the cable can control the power up sequence.
POWER Indicator
The POWER indicator will be ON if +5V is available on the EVB board. The indicator may
have a visible indication if the power supply is below +5V and out of regulation also.
PWR - Power Jack
PWR provides the default power input to the board. The power jack accepts a standard 2.0 ~
2.1mm center barrel plug connector (positive voltage center) to provide the +V input supply of
+6 to +20 VDC (+9VDC typical).
+Volts, 2mm center
U1 and U2 Sockets
U1 and U2 provide Zero Insertion Force (ZIF) type sockets for installing the QL4 device. Only
one QL4 maybe installed on the development board at a time. U1 provides a Dual In-Line
(DIP) type package mount and will also allow SOIC type packages to be applied with a SOIC /
DIP adapter (Logical Systems part # PA16SO1-03-3 or similar).
U2 offers the TSSOP
package type mount. Use caution to verify the device PIN 1 location when installing in the
sockets.
7
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相关PDF资料
M68KIT912D60A KIT EVALUATION FOR MC912D60A
M80-4615005 CONN RECEPT 2MM 50POS 24-28AWG
M80-4C10205F1-02-325-00-000 CONN RCPT MIX-TEK 4POS GOLD
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