LPC1758FBD80 NXP Semiconductors, LPC1758FBD80 Datasheet - Page 33

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LPC1758FBD80

Manufacturer Part Number
LPC1758FBD80
Description
IC, 32BIT MCU, ARM CORTEX, 100MHZ LQFP80
Manufacturer
NXP Semiconductors
Datasheet

Specifications of LPC1758FBD80

Controller Family/series
(ARM Cortex)
No. Of I/o's
52
Ram Memory Size
64KB
Cpu Speed
100MHz
No. Of Timers
4
Interface
CAN, I2C, SPI, UART
Core Size
32 Bit
Program Memory Size
512KB
Lead Free Status / RoHS Status
Lead free / RoHS Compliant

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NXP Semiconductors
LPC1758_56_54_52_51_3
Product data sheet
On the LPC1758/56/54/52/51, I/O pads are powered by the 3.3 V (V
the V
the CPU and most of the peripherals.
Depending on the LPC1758/56/54/52/51 application, a design can use two power options
to manage power consumption.
The first option assumes that power consumption is not a concern and the design ties the
V
supply for both pads, the CPU, and peripherals. While this solution is simple, it does not
support powering down the I/O pad ring “on the fly” while keeping the CPU and
peripherals alive.
The second option uses two power supplies; a 3.3 V supply for the I/O pads (V
a dedicated 3.3 V supply for the CPU (V
powered independently from the I/O pad ring enables shutting down of the I/O pad power
supply “on the fly”, while the CPU and peripherals stay active.
The VBAT pin supplies power only to the RTC domain. The RTC requires a minimum of
power to operate, which can be supplied by an external battery. The device core power
(V
there is no power drain from the RTC battery when V
DD(3V3)
DD(REG)(3V3)
DD(REG)(3V3)
and V
) is used to operate the RTC whenever V
DD(REG)(3V3)
pin powers the on-chip voltage regulator which in turn provides power to
Rev. 03 — 19 November 2009
pins together. This approach requires only one 3.3 V power
DD(REG)(3V3)
LPC1758/56/54/52/51
32-bit ARM Cortex-M3 microcontroller
). Having the on-chip voltage regulator
DD(REG)(3V3)
DD(REG)(3V3)
is available.
is present. Therefore,
DD(3V3)
© NXP B.V. 2009. All rights reserved.
) pins, while
DD(3V3)
33 of 64
) and

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