Rhydolabz eCee NXP LPC 2148, Quick Start Manual

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POWER SUPPLY
CLOCK SOURCE
Vin
1
G
N
D
2
Vout
3
U5
LM7805
+ C12
47uf/16v C16
0.1uF
Vin
3
G
N
D
1
Vout
2
U6
LD1117S33
C13
0.1uF
V3.3
R30
470R
D10
LED
D9
1N4007
J10
PHONEJACK
C14
47uf/10v C17
10uf/10v
1
2
J11
CON2
C15
10uf/10v
1
2
J12
CON2
V5.0
PWR_DC
EXTERNAL POWER SUPP LY
eCee NXP LPC 2148 Board has two power supplies; you can choose one of the following ways to
supply power
(1) Through an Adaptor (any standard 9-12V power supply)
(2) Through the motherboard USB port
The external Power Supply circuit is given below:
eCee NXP LPC 2148 evaluation board has two clock sources:

32.768 KHz as the RTC clock source

10 MHz as the MCU clock source