LPC2468FET208,551 NXP Semiconductors, LPC2468FET208,551 Datasheet - Page 103

IC ARM7 MCU FLASH 512K 208TFBGA

LPC2468FET208,551

Manufacturer Part Number
LPC2468FET208,551
Description
IC ARM7 MCU FLASH 512K 208TFBGA
Manufacturer
NXP Semiconductors
Series
LPC2400r
Datasheets

Specifications of LPC2468FET208,551

Program Memory Type
FLASH
Program Memory Size
512KB (512K x 8)
Package / Case
208-TFBGA
Core Processor
ARM7
Core Size
16/32-Bit
Speed
72MHz
Connectivity
CAN, EBI/EMI, Ethernet, I²C, Microwire, MMC, SPI, SSI, SSP, UART/USART, USB OTG
Peripherals
Brown-out Detect/Reset, DMA, I²S, POR, PWM, WDT
Number Of I /o
160
Ram Size
98K x 8
Voltage - Supply (vcc/vdd)
3 V ~ 3.6 V
Data Converters
A/D 8x10b; D/A 1x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Processor Series
LPC24
Core
ARM7TDMI-S
Data Bus Width
16 bit, 32 bit
Data Ram Size
98 KB
Interface Type
CAN/I2S/ISP/SSP/UART/USB
Maximum Clock Frequency
72 MHz
Number Of Programmable I/os
160
Number Of Timers
6
Operating Supply Voltage
3.3 V
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
3rd Party Development Tools
MDK-ARM, RL-ARM, ULINK2, IRD-LPC2468-DEV, SAB-TFBGA208, KSK-LPC2468-PL
Development Tools By Supplier
OM10100
Minimum Operating Temperature
- 40 C
On-chip Adc
8-ch x 10-bit
On-chip Dac
1-ch x 10-bit
Package
208TFBGA
Device Core
ARM7TDMI-S
Family Name
LPC2000
Maximum Speed
72 MHz
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With
622-1025 - KIT DEV IND REF DESIGN LPC2468622-1024 - BOARD SCKT ADAPTER FOR TFBGA208568-4358 - DISPLAY QVGA TFT FOR OM10100568-4309 - BOARD EXTENSION LPCSTICK568-4308 - EVAL LPC-STICK WITH LPC2468MCB2400U - BOARD EVAL MCB2400 + ULINK2MCB2400 - BOARD EVAL FOR NXP LPC246X SER622-1005 - USB IN-CIRCUIT PROG ARM7 LPC2K
Eeprom Size
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Other names
568-4262
935283234551
LPC2468FET208-S

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
LPC2468FET208,551
Manufacturer:
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Quantity:
6 174
Part Number:
LPC2468FET208,551
Manufacturer:
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Quantity:
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NXP Semiconductors
5. Memory Accelerator Module operating modes
UM10237_4
User manual
4.2 Instruction latches and data latches
4.3 Flash programming Issues
Code and Data accesses are treated separately by the Memory Accelerator Module.
There is a 128 bit Latch, a 15 bit Address Latch, and a 15 bit comparator associated with
each buffer (prefetch, branch trail, and data). Each 128 bit latch holds 4 words (4 ARM
instructions, or 8 Thumb instructions).
Also associated with each buffer are 32 4:1 Multiplexers that select the requested word
from the 128 bit line.
Since the Flash memory does not allow accesses during programming and erase
operations, it is necessary for the MAM to force the CPU to wait if a memory access to a
Flash address is requested while the Flash module is busy. (This is accomplished by
asserting the ARM7TDMI-S local bus signal CLKEN.) Under some conditions, this delay
could result in a Watchdog time-out. The user will need to be aware of this possibility and
take steps to ensure that an unwanted Watchdog reset does not cause a system failure
while programming or erasing the Flash memory.
In order to preclude the possibility of stale data being read from the Flash memory, the
LPC2400 MAM holding latches are automatically invalidated at the beginning of any Flash
programming or erase operation. Any subsequent read from a Flash address will cause a
new fetch to be initiated after the Flash operation has completed.
Three modes of operation are defined for the MAM, trading off performance for ease of
predictability:
Fig 20. Simplified block diagram of the Memory Accelerator Module
Mode 0: MAM off. All memory requests result in a Flash read operation (see note 2
below). There are no instruction prefetches.
ARM LOCAL BUS
Rev. 04 — 26 August 2009
Chapter 6: LPC24XX Memory Accelerator Module (MAM)
INTERFACE
BUS
MEMORY ADDRESS
FLASH MEMORY BANK
BUFFERS
UM10237
© NXP B.V. 2009. All rights reserved.
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