LPC-MT-2138 Olimex Ltd., LPC-MT-2138 Datasheet - Page 10

• Manufacturer Part Number: LPC-MT-2138
• Description: MCU, MPU & DSP Development Tools DEV BRD FOR LPC2138
• Manufacturer: Olimex Ltd.

Specifications of LPC-MT-2138

• Processor To Be Evaluated: LPC2138
• Data Bus Width: 16 bit, 32 bit
• Interface Type: RS-232, I2C, JTAG, SPI, UART
• Dimensions: 4.75 in x 1.5 in
• Operating Supply Voltage: 12 V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

JUMPER DESCRIPTION
DAC/PWM
1 (PWM5).
JRST
BSL
INPUT/OUTPUT
When this jumper is in position DAC - connects LIGHT_LCD signal to LPC2138 pin 9
(AOUT); when this jumper is in position PWM – connects LIGHT_LCD signal to LPC2138 pin
VREF
DBG
Connects LPC2138 pin 63 (VREF) to 3.3V.
Default state is closed.
Default state is PWM – closed.
Enables LPC2138 reset via UART.
Default state is open.
This jumper is connected to LPC2138 pin 41 (P0.14). When this jumper is open, P0.14
is pulled-up to 3.3V via R1 (22k) , when is closed P0.14 is pulled-down via R24 (1k).
LOW level on pin P0.14 immediately after reset is considered as an external hardware
request to start the ISP command handler. If there is no request for the ISP command
handler execution (P0.14 is sampled HIGH after reset), a search is made for a valid
user program. If a valid user program is found then the execution control is
transferred to it. If a valid user program is not found, the auto-baud routine is
invoked.
Default state is open.
Enables JTAG debug operations.
Default state is closed
Reset button with name RST, connected to LPC2138 pin 57 (RST).
User button with name B1, connected to LPC2138 pin 45 (P0.15).
User button with name B2, connected to LPC2138 pin 46 (P0.16).
User button with name B3, connected to LPC2138 pin 55 (P0.20).
User button with name B4, connected to LPC2138 pin 15 (P0.30).
User button with name B5, connected to LPC2138 pin 34 (P0.9).
LCD 16x2 display with BACKLIGHT, connected as follows: RS – to LPC2138 pin 12
(P1.17); R/W – to LPC2138 pin 4 (P1.19); E – to LPC2138 pin 8 (P1.18), DB4 – to
LPC2138 pin 48 (P1.20), DB5 – to LPC2138 pin 44 (P1.21), DB6 – to LPC2138 pin 40
(P1.22), DB7 to LPC2138 pin 36 (P1.23).
Potentiometer with name Contrast for setting LCD contrast voltage.
Status Led with name LED connected to LPC2138 pin 17 (P0.31).
Buzzer connected to LPC2138 pin 2 (P0.22).
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