Data lines as general I/O
2004-12-29 by jamesasteres
Hi, I'm using the LPC2292 (144 pin). If I only have 8 bit external devices, can I use P2.8 thru P2.31 as general purpose I/O? (These pins would be d8-d31 in 32 bit data width applications), James
Thread
Data lines as general I/O
Re: [lpc2000] Data lines as general I/O
2005-01-02 by Anton Erasmus
On 29 Dec 2004 at 23:57, jamesasteres wrote: > > > Hi, > I'm using the LPC2292 (144 pin). If I only have 8 bit external > devices, can I use P2.8 thru P2.31 as general purpose I/O? (These pins > would be d8-d31 in 32 bit data width applications), James Hi, The Table below lists the 4 options you have for mapping the external databus on the LPC2292: (Map to monospaced font for reading) | PINSEL2 5: | 00 | 01 | 10 | 11 | +------------+---------------+---------------+--------+---------------+ | P1.0 | CS0 | CS0 | CS0 | GPIO | | P1.1 | OE | OE | OE | GPIO | | P2.0 | D0 | D0 | D0 | GPIO | | P2.1 | D1 | D1 | D1 | GPIO | | P2.2 | D2 | D2 | D2 | GPIO | | P2.3 | D3 | D3 | D3 | GPIO | | P2.4 | D4 | D4 | D4 | GPIO | | P2.5 | D5 | D5 | D5 | GPIO | | P2.6 | D6 | D6 | D6 | GPIO | | P2.7 | D7 | D7 | D7 | GPIO | | P2.8 | GPIO | D8 | D8 | GPIO | | P2.9 | GPIO | D9 | D9 | GPIO | | P2.10 | GPIO | D10 | D10 | GPIO | | P2.11 | GPIO | D11 | D11 | GPIO | | P2.12 | GPIO | D12 | D12 | GPIO | | P2.13 | GPIO | D13 | D13 | GPIO | | P2.14 | GPIO | D14 | D14 | GPIO | | P2.15 | GPIO | D15 | D15 | GPIO | | P2.16 | GPIO | GPIO | D16 | GPIO | | P2.17 | GPIO | GPIO | D17 | GPIO | | P2.18 | GPIO | GPIO | D18 | GPIO | | P2.19 | GPIO | GPIO | D19 | GPIO | | P2.20 | GPIO | GPIO | D20 | GPIO | | P2.21 | GPIO | GPIO | D21 | GPIO | | P2.22 | GPIO | GPIO | D22 | GPIO | | P2.23 | GPIO | GPIO | D23 | GPIO | | P2.24 | GPIO | GPIO | D24 | GPIO | | P2.25 | GPIO | GPIO | D25 | GPIO | | P2.26 | GPIO | GPIO | D26 | GPIO | | P2.27 | GPIO | GPIO | D27 | GPIO | | P2.28 | GPIO/Reserved | GPIO/Reserved | D28 | GPIO/Reserved | | P2.29 | GPIO/Reserved | GPIO/Reserved | D29 | GPIO/Reserved | | P2.30 | GPIO/AIN4 | GPIO/AIN4 | D30 | GPIO/AIN4 | | P2.31 | GPIO/AIN5 | GPIO/AIN5 | D31 | GPIO/AIN5 | | P3.30 | GPIO | BLS1 | BLS1 | GPIO | | P3.31 | BLS0 | BLS0 | BLS0 | GPIO | | P3.28 | GPIO/AIN7 | GPIO/AIN7 | BLS3 | GPIO/AIN7 | | P3.29 | GPIO/AIN6 | GPIO/AIN6 | BLS2 | GPIO/AIN6 | Regards Anton Erasmus -- A J Erasmus
Re: [lpc2000] Data lines as general I/O
2005-01-07 by jamesasteres
>From: "Anton Erasmus" <antone@s...> >Date: Sun Jan 2, 2005 1:33 am >Subject: Re: [lpc2000] Data lines as general I/O > >Hi, > >The Table below lists the 4 options you have for mapping the >external Thanks for the table. That is much clearer than the datasheet! James