OM11042,598 NXP Semiconductors, OM11042,598 Datasheet - Page 16

• Manufacturer Part Number: OM11042,598
• Description: Microcontroller Modules & Accessories mbed LPC2368 Demo Board
• Manufacturer: NXP Semiconductors

Specifications of OM11042,598

• Product: Microcontroller Modules
• Data Bus Width: 32 bit
• Core Processor: LPC2368
• Clock Speed: 60 MHz
• Interface Type: Ethernet, CAN, I2C, SPI, UART
• Operating Supply Voltage: 3 V to 3.6 V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

NXP Semiconductors
[8]
[9]
[10] Pad provides special analog functionality.
[11] Pad provides special analog functionality.
[12] Pad provides special analog functionality.
[13] Pad provides special analog functionality.
[14] Pad provides special analog functionality.
7. Functional description
LPC2364_65_66_67_68_6
Product data sheet
Pad provides special analog functionality.
When the main oscillator is not used, connect XTAL1 and XTAL2 as follows: XTAL1 can be left floating or can be grounded (grounding
is preferred to reduce susceptibility to noise). XTAL2 should be left floating.
7.1 Architectural overview
The LPC2364/65/66/67/68 microcontroller consists of an ARM7TDMI-S CPU with
emulation support, the ARM7 local bus for closely coupled, high-speed access to the
majority of on-chip memory, the AMBA AHB interfacing to high-speed on-chip peripherals,
and the AMBA APB for connection to other on-chip peripheral functions. The
microcontroller permanently configures the ARM7TDMI-S processor for little-endian byte
order.
The LPC2364/65/66/67/68 implements two AHB in order to allow the Ethernet block to
operate without interference caused by other system activity. The primary AHB, referred
to as AHB1, includes the VIC and GPDMA controller.
The second AHB, referred to as AHB2, includes only the Ethernet block and an
associated 16 kB SRAM. In addition, a bus bridge is provided that allows the secondary
AHB to be a bus master on AHB1, allowing expansion of Ethernet buffer space into
off-chip memory or unused space in memory residing on AHB1.
In summary, bus masters with access to AHB1 are the ARM7 itself, the GPDMA function,
and the Ethernet block (via the bus bridge from AHB2). Bus masters with access to AHB2
are the ARM7 and the Ethernet block.
AHB peripherals are allocated a 2 MB range of addresses at the very top of the 4 GB
ARM memory space. Each AHB peripheral is allocated a 16 kB address space within the
AHB address space. Lower speed peripheral functions are connected to the APB. The
AHB to APB bridge interfaces the APB to the AHB. APB peripherals are also allocated a
2 MB range of addresses, beginning at the 3.5 GB address point. Each APB peripheral is
allocated a 16 kB address space within the APB address space.
The ARM7TDMI-S processor is a general purpose 32-bit microprocessor, which offers
high performance and very low power consumption. The ARM architecture is based on
Reduced Instruction Set Computer (RISC) principles, and the instruction set and related
decode mechanism are much simpler than those of microprogrammed complex
instruction set computers. This simplicity results in a high instruction throughput and
impressive real-time interrupt response from a small and cost-effective processor core.
Pipeline techniques are employed so that all parts of the processing and memory systems
can operate continuously. Typically, while one instruction is being executed, its successor
is being decoded, and a third instruction is being fetched from memory.
Rev. 06 — 1 February 2010
LPC2364/65/66/67/68
Single-chip 16-bit/32-bit microcontrollers
© NXP B.V. 2010. All rights reserved.
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