LPC2468FET208,551 NXP Semiconductors, LPC2468FET208,551 Datasheet - Page 682

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

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

NXP Semiconductors
8. Code Read Protection (CRP)
UM10237_4
User manual
Code Read Protection is a mechanism that allows user to enable different levels of
security in the system so that access to the on-chip Flash and use of the ISP can be
restricted. When needed, CRP is invoked by programming a specific pattern in Flash
location at 0x000001FC. IAP commands are not affected by the code read protection.
Starting with bootloader version 3.2 three levels of CRP are implemented. Earlier
bootloader versions had only CRP2 option implemented.
Important: any CRP change becomes effective only after the device has gone
through a power cycle.
Table 601. Code Read Protection options
Name Pattern
CRP1 0x12345678
CRP2 0x87654321
CRP3 0x43218765
programmed
in 0x000001FC
Rev. 04 — 26 August 2009
Description
Access to chip via the JTAG pins is disabled. This mode allows partial
Flash update using the following ISP commands and restrictions:
This mode is useful when CRP is required and Flash field updates are
needed but all sectors can not be erased. Since compare command is
disabled in case of partial updates the secondary loader should
implement checksum mechanism to verify the integrity of the Flash.
Access to chip via the JTAG pins is disabled. The following ISP
commands are disabled:
When CRP2 is enabled the ISP erase command only allows erasure of
all user sectors.
Access to chip via the JTAG pins is disabled. ISP entry by pulling P2.10
LOW is disabled if a valid user code is present in Flash sector 0.
This mode effectively disables ISP overide using P2.10 pin. It is up to the
user’s application to provide need Flash update mechanism using IAP
calls or call reinvoke ISP command to enable Flash update via UART0.
Caution: If CRP3 is selected, no future factory testing can be
performed on the device.
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Chapter 30: LPC24XX Flash memory programming firmware
Write to RAM command can not access RAM below 0x40000200
Copy RAM to Flash command can not write to Sector 0
Erase command can erase Sector 0 only when all sectors are
selected for erase
Compare command is disabled
Read command is disabled
Read Memory command
Write to RAM command
Go command
Copy RAM to Flash command
Compare command
UM10237
© NXP B.V. 2009. All rights reserved.
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