參數(shù)資料
型號(hào)： DEMO908GZ60UG
英文描述： DEMO908GZ60UG
中文描述： DEMO908GZ60UG
文件頁(yè)數(shù)： 10/19頁(yè)
文件大小： 167K
代理商： DEMO908GZ60UG
D E M O 9 0 8 R G 6 0
A U G U S T 6 , 2 0 0 4
10
Figure 1: TB1 Terminal Block Connector
PWR_S EL J umper
The PWR_SEL jumper selects the source of power input to the module, or provides+5VDC to
J1 for use by external circuits. The module takes voltage input from the 2-position on-board
voltage regulator or from the 40-pin MCU connector (J1). Power input at the terminal block
must be DC voltage between +7VDC and +16VDC. Power input on the MCU connector
must
be
regulated voltage between +4.75VDC and +5.25VDC. The MCU_PORT connector power
input allows use of batteries, or other alternate sources, to power the module.
CAUTION:
Module damage may occur if the MCU_PORT power input pins (J1-
1, J1-3) are over-driven.
The PWR_SEL option jumper provides 3 possible configurations; source power from the PWR
connector, source power from J1, or source power from PWR and supply power to J1. The
figure below shows the settings for each configuration.
Figure 2: PWR_SEL Jumper Settings
1
2
Module powered from external input connected to J1-1 (+) and
J1-3 (-). +5VDC Maximum input voltage.
1
2
Module powered from external +6VDC - +16VDC connected to
TB1 Terminal Block. J1-1 is open or not connected.
1
2
Module powered from external +6VDC - +16VDC connected to
TB1 Terminal Block. Module provides +5VDC output at pin J1
for use by external circuits.
NOTE:
Power output from the module is limited by the 250 mA maximum out-
put of the on-board voltage regulator.
NOTE:
External circuit connected to J1 should limit current flow to less than
50 mA to prevent current-limiting the power supply (VR1).
+6VDC -
+16VDC
GND
2 Position, Screw-
Type Terminal Block
MCU_PORT
J1
+
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參數(shù)描述
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