LPC2148FBD64微控制器ARM7资料 PDF详情

The LPC2141/42/44/46/48 microcontrollers are based on a 16-bit/32-bit ARM7TDMI-S

CPU with real-time emulation and embedded trace support, that combine the

microcontroller with embedded high-speed flash memory ranging from 32 kB to 512 kB. A

128-bit wide memory interface and a unique accelerator architecture enable 32-bit code

execution at the maximum clock rate. For critical code size applications, the alternative

16-bit Thumb mode reduces code by more than 30 % with minimal performance penalty.

Due to their tiny size and low power consumption, LPC2141/42/44/46/48 are ideal for

applications where miniaturization is a key requirement, such as access control and

2.1 Key features

 16-bit/32-bit ARM7TDMI-S microcontroller in a tiny LQFP64 package.

 8 kB to 40 kB of on-chip static RAM and 32 kB to 512 kB of on-chip flash memory.

128-bit wide interface/accelerator enables high-speed 60 MHz operation.

 In-System Programming/In-Application Programming (ISP/IAP) via on-chip boot

loader software. Single flash sector or full chip erase in 400 ms and programming of

256 B in 1 ms.

 EmbeddedICE RT and Embedded Trace interfaces offer real-time debugging with the

on-chip RealMonitor software and high-speed tracing of instruction execution.

 USB 2.0 Full-speed compliant device controller with 2 kB of endpoint RAM.

In addition, the LPC2146/48 provides 8 kB of on-chip RAM accessible to USB by DMA.

 One or two (LPC2141/42 vs. LPC2144/46/48) 10-bit ADCs provide a total of 6/14

analog inputs, with conversion times as low as 2.44 s per channel.

 Single 10-bit DAC provides variable analog output (LPC2142/44/46/48 only).

 Two 32-bit timers/external event counters (with four capture and four compare

channels each), PWM unit (six outputs) and watchdog.

 Low power Real-Time Clock (RTC) with independent power and 32 kHz clock input.

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