Continue to Site

Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

Register Log in

LPC2148 interfacing problem

Status
Not open for further replies.
kandhu26

kandhu26

Member level 5
Joined
Sep 7, 2009
Messages
93
Helped
13
Reputation
26
Reaction score
12
Trophy points
1,288
Location
chennai / bangalore
Activity points
1,858
I hav problem in connecting LPC2148 via RS232[i am using MAX232 as a line driver]. is it possible to flash using MAX232[which operates in 5V] or Should i use MAX 3232 [which operates in 3.3V].
 

i didnt use DTR & RTS in RS-232. instead i used jumper to make p0.14 low and reset switch. but when i try to connect its showing error [failed to autobaud-step1]...i hav attached ma circuit here...can any1 plz help me??
 

Hi,
I think you can look into the schematics provided for eval boards in keil.com
MCB2140 eval board uses the same controller i suppose...look into that ......
pavan
 

Hi

The LPC2148 working voltage is 3.3V although the I/O is 5V tolerant - so

You can use both MAX232 and MAX3232

But i don't advice you to use MAX232 since you will need a 5V power supply to operate the chip

All the best

Bobi

The microcontroller specialist
 

Status
Not open for further replies.

Similar threads

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Back
Top