LPC2141 PHILIPS [NXP Semiconductors], LPC2141 Datasheet - Page 11

• Manufacturer Part Number: LPC2141
• Description: Single-chip 16-bit/32-bit microcontrollers; up to 512 kB flash with ISP/IAP, USB 2.0 full-speed device, 10-bit ADC and DAC
• Manufacturer: PHILIPS [NXP Semiconductors]

Philips Semiconductors
Table 3:
[1]
[2]
[3]
[4]
[5]
[6]
[7]
[8]
[9]
9397 750 14985
Preliminary data sheet
Symbol
P1.28/TDI
P1.29/TCK
P1.30/TMS
P1.31/TRST
D+
D
RESET
XTAL1
XTAL2
RTXC1
RTXC2
V
V
V
V
VREF
VBAT
SS
SSA
DD
DDA
5 V tolerant pad providing digital I/O functions with TTL levels and hysteresis and 10 ns slew rate control.
5 V tolerant pad providing digital I/O functions with TTL levels and hysteresis and 10 ns slew rate control. If configured for an input
function, this pad utilizes built-in glitch filter that blocks pulses shorter than 3 ns.
Open-drain 5 V tolerant digital I/O I
functionality.
5 V tolerant pad providing digital I/O (with TTL levels and hysteresis and 10 ns slew rate control) and analog input function. If configured
for an input function, this pad utilizes built-in glitch filter that blocks pulses shorter than 3 ns. When configured as an ADC input, digital
section of the pad is disabled.
5 V tolerant pad providing digital I/O (with TTL levels and hysteresis and 10 ns slew rate control) and analog output function. When
configured as the DAC output, digital section of the pad is disabled.
5 V tolerant pad with built-in pull-up resistor providing digital I/O functions with TTL levels and hysteresis and 10 ns slew rate control.
The pull-up resistor’s value typically ranges from 60 k to 300 k .
Pad is designed in accordance with the Universal Serial Bus (USB) specification, revision 2.0 (Full-speed and Low-speed mode only).
5 V tolerant pad providing digital input (with TTL levels and hysteresis) function only.
Pad provides special analog functionality.
Pin description
Pin
60
56
52
20
10
11
57
62
61
3
5
6, 18, 25, 42,
50
59
23, 43, 51
7
63
49
[9]
[9]
[6]
[6]
[6]
[6]
[7]
[7]
[8]
[9]
[9]
…continued
Type
I/O
I
I/O
I
I/O
I
I/O
I
I/O
I/O
I
I
O
I
O
I
I
I
I
I
I
2
C-bus 400 kHz specification compatible pad. It requires external pull-up to provide an output
Description
P1.28 — General purpose input/output digital pin (GPIO).
TDI — Test Data in for JTAG interface.
P1.29 — General purpose input/output digital pin (GPIO).
TCK — Test Clock for JTAG interface.
P1.30 — General purpose input/output digital pin (GPIO).
TMS — Test Mode Select for JTAG interface.
P1.31 — General purpose input/output digital pin (GPIO).
TRST — Test Reset for JTAG interface.
USB bidirectional D+ line.
USB bidirectional D line.
External reset input: A LOW on this pin resets the device, causing I/O ports
and peripherals to take on their default states, and processor execution to
begin at address 0. TTL with hysteresis, 5 V tolerant.
Input to the oscillator circuit and internal clock generator circuits.
Output from the oscillator amplifier.
Input to the RTC oscillator circuit.
Output from the RTC oscillator circuit.
Ground: 0 V reference.
Analog ground: 0 V reference. This should nominally be the same voltage
as V
3.3 V power supply: This is the power supply voltage for the core and I/O
ports.
Analog 3.3 V power supply: This should be nominally the same voltage as
V
used to power the on-chip ADC(s) and DAC.
A/D converter reference voltage: This should be nominally less than or
equal to the V
Level on this pin is used as a reference for ADC(s) and DAC.
RTC power supply voltage: 3.3 V on this pin supplies the power to the RTC.
DD
Rev. 01 — 3 October 2005
SS
but should be isolated to minimize noise and error. This voltage is only
, but should be isolated to minimize noise and error.
DD
voltage but should be isolated to minimize noise and error.
LPC2141/42/44/46/48
Single-chip 16-bit/32-bit microcontrollers
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
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