LPC2148FBD64 Просмотр технического описания (PDF) - Philips Electronics
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LPC2148FBD64
Philips Electronics
LPC2148FBD64 Datasheet PDF : 38 Pages
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Philips Semiconductors
LPC2141/42/44/46/48
Single-chip 16-bit/32-bit microcontrollers
Table 3: Pin description …continued
Symbol
Pin
Type
P1.28/TDI
60 [6]
I/O
I
P1.29/TCK
56 [6]
I/O
I
P1.30/TMS
52 [6]
I/O
I
P1.31/TRST 20 [6]
I/O
I
D+
10 [7]
I/O
D−
11 [7]
I/O
RESET
57 [8]
I
XTAL1
XTAL2
RTXC1
RTXC2
VSS
VSSA
VDD
VDDA
62 [9]
I
61 [9]
O
3 [9]
I
5 [9]
O
6, 18, 25, 42, I
50
59
I
23, 43, 51 I
7
I
VREF
63
I
VBAT
49
I
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 VSS, but should be isolated to minimize noise and error.
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
VDD but should be isolated to minimize noise and error. This voltage is only
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 VDD voltage but should be isolated to minimize noise and error.
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.
[1] 5 V tolerant pad providing digital I/O functions with TTL levels and hysteresis and 10 ns slew rate control.
[2] 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.
[3] Open-drain 5 V tolerant digital I/O I2C-bus 400 kHz specification compatible pad. It requires external pull-up to provide an output
functionality.
[4] 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] 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.
[6] 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 kΩ to 300 kΩ.
[7] Pad is designed in accordance with the Universal Serial Bus (USB) specification, revision 2.0 (Full-speed and Low-speed mode only).
[8] 5 V tolerant pad providing digital input (with TTL levels and hysteresis) function only.
[9] Pad provides special analog functionality.
9397 750 14985
Preliminary data sheet
Rev. 01 — 3 October 2005
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
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