AN2125 View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
'AN2125' PDF : 68 Pages View PDF
uPSD3300 Series Design Guide for DK3300-ELCD Using KEIL
APPENDIX A. DK3300-ELCD JUMPERS SELECTION AND DEFAULTS
The following Table describes the DK3300-ELCD Jumpers. Verify that in Jumper set JP14 -
ADC7 is closed and JP3 is set to Fix. JP5, JP4 and JP6 Jumper sets are all closed for the PW-
MADC demo. See the Schematics for more information regarding the jumpers.
Table 1. DK3300-ELCD Jumpers
Jumper #
Description
Default settings
Comments/
JP1 JTAG Debug I/O Pin Closed
Should be closed
JP2
Reset Input Select
closed in position 1-2
for reset switch.
Position 2-3 for RTC reset.
JP3 LCD Contrast
2-3 closed (Fix)
Normally closed in position 2-3
Position 1-2 used for PWM control
JP4 Enhanced LCD
Closed
Determines if Enhanced -LCD is on Board
JP5
Encoder
Connection
Normally all 3 closed to
enable Encoder
This connects Encoder to Port B.
JP6 Key board & LED Closed
JP7 Enable SPI
Closed
Normally closed to enable SPI EEPROM
Normally 1-3 and 2-4 Else can be set to position 3-5 and 4-6 to
JP8 IrDA / Uart1 Select Closed to select the select the IrDA transceiver to be connected
RS232 connector 1
to Uart1.
JP9 SRAM Battery
Normally Open
JP10 Enable I2C
Closed
Normally both positions closed to enable I2C
access to RTC chip.
JP11 Clock Select
Closed X2 for Crystal Selects Crystal or Oscillator
JP12
Interrupt Select for
MCU)
Normally open. (See
DK3300-ELCD
schematics)
(Used to map various RTC Interrupt sources
to the MCU) 1-IRQ; 2-PFO2; 3-SQW; 4-
PFO1; 5-PBO
JP14
ADC Channel
Select
ADC7 (Positions 15-16) Selects what ADC channel connects the RC
is Closed
circuit on the board.
JP15
PWM RC Constant
Normally (position 1-2)
is closed.
Selects PWM RC constant. position 1-2 is
1ms.
JP16
For connecting
Uart0 and Uart1 in
loop back mode
Normally open
Can be connected positions 1-2 and 3-4 for
loop back.
JP18
Headers for
M41ST87 Signals
Normally not used
Headers can be used to connect to check
signals:
1- ECON
2-TPCLR
3-F32K
4-GND
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