- on Microcontrollers
- Published in issue 7/2007 on page 0
LPC900 Programmer
The LPC900 family is the Swiss Army knife of 8051-compatible microcontrollers. The ‘LPC’ in the part number stands for ‘low pin count’: the NXP (formerly Philips) LPC900 family consists of a range of small and easy-to-use microcontrollers ideal for small-scale high-speed applications. Since the LPC900 family is based on an 8051 core it is easy to learn how to use the devices. However, the LPC900 is more than just a slightly spruced-up version of the 8051.
Resistors
R1 = 240Ω SMD (0805)
R2 = 390Ω SMD (0805)
R3,R4,R7,R9,R11,R12,R13 = 1kΩ SMD (0805)
R5,R6,R8,R10 = 220kΩ SMD (0805)
Capacitors
C1 = 4µF7 25V SMD (1206 or 1210)
C2 = 10µF 6V SMD (1206 or 1210)
C3 = 100nF SMD (0805)
C4,C5,C6,C7,C8 = 1µF SMD (0805)
Semiconductors
D1 = GF1M
T1 = BC857 SMD (SOT23)
LED1,LED2 = LED, red, SMD (0805)
IC1 = LM317 SMD (SO8)
IC2 = 74HCT00 SMD (SO14)
IC3 = MAX3232 (SO16)
Miscellaneous
K1 = mains adaptor socket for PCB mounting
K2 = 9-way sub-D socket, angled, PCB mount
K3 = 5-way SIL pinheader
PCB, ref. 070084-1, from www.thepcbshop.com
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