參數(shù)資料
型號(hào)： LPC2458FET180
廠商： NXP Semiconductors N.V.
元件分類： 數(shù)學(xué)處理器
英文描述： Single-chip 16-bit-32-bit micro; 512 kB flash, Ethernet, CAN, ISP-IAP, USB 2.0 device-host-OTG, external memory interface
封裝： LPC2458FET180<SOT570-3 (TFBGA180)|<<http://www.nxp.com/packages/SOT570-3.html<1<Always Pb-free,;
文件頁數(shù)： 22/80頁
文件大小： 611K
代理商： LPC2458FET180
LPC2458
All information provided in this document is subject to legal disclaimers.
NXP B.V. 2011. All rights reserved.
Product data sheet
Rev. 4 — 1 September 2011
22 of 80
NXP Semiconductors
LPC2458
Single-chip 16-bit/32-bit micro
7.3 On-chip SRAM
The LPC2458 includes a SRAM memory of 64 kB reserved for the ARM processor
exclusive use. This RAM may be used for code and/or data storage and may be accessed
as 8 bits, 16 bits, and 32 bits.
A 16 kB SRAM block serving as a buffer for the Ethernet controller and a 16 kB SRAM
associated with the second AHB can be used both for data and code storage. The 2 kB
RTC SRAM can be used for data storage only. The RTC SRAM is battery powered and
retains the content in the absence of the main power supply.
7.4 Memory map
The LPC2458 memory map incorporates several distinct regions as shown in
Table 5
and
Figure 3
.
In addition, the CPU interrupt vectors may be remapped to allow them to reside in either
flash memory (default), boot ROM, or SRAM (see
Section 7.26.6
).
Table 5.
Address range General use
0x0000 0000 to
0x3FFF FFFF
LPC2458 memory usage and details
Address range details and description
0x0000 0000 to 0x0007 FFFF
0x3FFF C000 to 0x3FFF FFFF
on-chip
non-volatile
memory and fast
I/O
on-chip RAM
flash memory (512 kB)
fast GPIO registers
0x4000 0000 to
0x7FFF FFFF
0x4000 0000 to 0x4000 FFFF
RAM (64 kB)
0x7FE0 0000 to 0x7FE0 3FFF
0x7FD0 0000 to 0x7FD0 3FFF
two static memory banks, 1 MB each
0x8000 0000 to 0x800F FFFF
0x8100 0000 to 0x810F FFFF
two dynamic memory banks, 256 MB each
0xA000 0000 to 0xAFFF FFFF
0xB000 0000 to 0xBFFF FFFF
36 peripheral blocks, 16 kB each
Ethernet RAM (16 kB)
USB RAM (16 kB)
0x8000 0000 to
0xBFFF FFFF
off-chip memory
static memory bank 0
static memory bank 1
dynamic memory bank 0
dynamic memory bank 1
0xE000 0000 to
0xEFFF FFFF
0xF000 0000 to
0xFFFF FFFF
APB peripherals
AHB peripherals
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LPC2460_08 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Flashless 16-bit/32-bit micro; Ethernet, CAN, ISP/IAP, USB 2.0 device/host/OTG, external memory interface
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