LPC2420FBD208 NXP [NXP Semiconductors], LPC2420FBD208 Datasheet - Page 23

• Manufacturer Part Number: LPC2420FBD208
• Description: Flashless 16-bit/32-bit microcontroller; Ethernet, CAN, ISP/IAP, USB 2.0 device/host/OTG, external memory interface
• Manufacturer: NXP [NXP Semiconductors]

NXP Semiconductors
Table 4.
[1]
[2]
[3]
[4]
[5]
[6]
[7]
[8]
LPC2420_60_3
Preliminary data sheet
Symbol
V
V
V
V
n.c.
V
V
VREF
VBAT
SSIO
SSCORE
SSA
DD(3V3)
DD(DCDC)(3V3)
DDA
5 V tolerant pad providing digital I/O functions with TTL levels and hysteresis.
5 V tolerant pad providing digital I/O functions (with TTL levels and hysteresis) and analog input. When configured as a ADC input,
digital section of the pad is disabled.
5 V tolerant pad providing digital I/O with TTL levels and hysteresis and analog output function. When configured as the DAC output,
digital section of the pad is disabled.
Open-drain 5 V tolerant digital I/O pad, compatible with I
functionality. When power is switched off, this pin connected to the I
configuration applies to all functions on this pin.
Pad provides digital I/O and USB functions. It is designed in accordance with the USB specification, revision 2.0 (Full-speed and
Low-speed mode only).
5 V tolerant pad with 5 ns glitch filter providing digital I/O functions with TTL levels and hysteresis.
5 V tolerant pad with 20 ns glitch filter providing digital I/O function with TTL levels and hysteresis.
Pad provides special analog functionality.
Pin description
Pin
33, 63,
77, 93,
114,
133,
148,
169,
189,
200
32, 84,
172
22
15, 60,
71, 89,
112,
125,
146,
165,
181,
198
30, 117,
141
26, 86,
174
20
24
38
[8]
[8]
[8]
[8]
[8]
[8]
[8]
[8]
[8]
…continued
Ball
L3, T5,
R9,
P12,
N16,
H14,
E15,
A12,
B6, A2
K4, P10,
D12
J2
G3,
P6, P8,
U13,
P17,
K16,
C17,
B13,
C9,
D7
J4, L14,
G14
H4,
P11,
D11
G4
K1
M3
[8]
[8]
[8]
[8]
[8]
[8]
[8]
[8]
[8]
Type
I
I
I
I
I
I
I
I
I
Rev. 03 — 20 November 2008
Description
ground: 0 V reference for the digital I/O pins.
ground: 0 V reference for the core.
analog ground: 0 V reference. This should nominally be the same
voltage as V
error.
3.3 V supply voltage: This is the power supply voltage for the I/O ports.
not connected pins: These pins must be left unconnected (floating).
3.3 V DC-to-DC converter supply voltage: This is the power supply for
the on-chip DC-to-DC converter.
analog 3.3 V pad supply voltage: This should be nominally the same
voltage as V
This voltage is used to power the ADC and DAC.
ADC reference: This should be nominally the same voltage as V
but should be isolated to minimize noise and error. The level on this pin is
used as a reference for ADC and DAC.
RTC power supply: 3.3 V on this pin supplies the power to the RTC.
2
C-bus 400 kHz specification. It requires an external pull-up to provide output
SSIO
DD(3V3)
2
C-bus is floating and does not disturb the I
/V
SSCORE
but should be isolated to minimize noise and error.
, but should be isolated to minimize noise and
Flashless 16-bit/32-bit microcontroller
LPC2420/2460
2
C-bus lines. Open-drain
© NXP B.V. 2008. All rights reserved.
DD(3V3)
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