Pin Configuration 122 May 03, 2004
Philips Semiconductors Preliminary User Manual
LPC2119/2129/2194/2292/2294ARM-based Microcontroller
1I/O
P2.22 D22 External memory data line 22.
10 I/O
P2.23 D23 External memory data line 23.
11 I/O
P2.24 D24 External memory data line 24.
12 I/O
P2.25 D25 External memory data line 25.
13
I/O
I
P2.26 D26 External memory data line 26.
BOOT0 While RESET is low, together with BOOT1 controls booting and
internal operation. Internal pullup ensures high state if pin is left
unconnected.
16
I/O
I
P2.27 D27 External memory data line 27.
BOOT1 While RESET is low, together with BOOT0 controls booting and
internal operation. Internal pullup ensures high state if pin is left
unconnected.
BOOT1:0=00 selects 8-bit memory on CS0 for boot.
BOOT1:0=01 selects 16-bit memory on CS0 for boot.
BOOT1:0=10 selects 32-bit memory on CS0 for boot.
BOOT1:0=11 selects Internal Flash memory.
17 I/O
P2.28 D28 External memory data line 28.
18 I/O
P2.29 D29 External memory data line 29.
19 I/O
I
P2.30 D30 External memory data line 30.
AIN4 A/D converter, input 4. This analog input is always connected to
its pin.
20 I/O
I
P2.31 D31 External memory data line 31.
AIN5 A/D converter, input 5. This analog input is always connected to
its pin.
P3.0
to
P3.31
89-
87,81,80,74-
71,66-
62,56,55,53,48
-
44,41,40,36,35
,30-27,97,96
I/O
Port 3: Port 3 is a 32-bit bi-directional I/O port with individual direction controls for each bit.
The operation of port 3 pins depends upon the pin function selected via the Pin Connect
Block.
Note: All Port 3 pins excluding those that can be used as A/D inputs (P3.28 and P3.29)
are functionally 5V tolerant. Port 3 pin configured to perform an input function will use built-
in pull-up resistor to set the default input level to high. If the A/D converter is not used at all,
pins associated with A/D inputs can be used as 5V tolerant digital IO pins. See "A/D
Converter" chapter for A/D input pin voltage considerations.
89 O
P3.0 A0 External memory address line 0.
Table 56: Pin description for LPC2292/2294
Pin
Name
LQFP144
Pin #
Type Description
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