EP7312屬于集成電路（IC）的微處理器。由凌云邏輯制造生產的EP7312微處理器微處理器產品是用于信息和數據處理的集成電路。與主要按照制造商所選術語而視為微控制器的類似產品相比，這些器件有所不同。但是按照傳統(tǒng)，微處理器不會在設備內集成工作存儲器，不太可能集成混合信號外設，并且可能在更為復雜的軟件范式下使用，這些范式涉及使用操作系統(tǒng)來管理多任務同時執(zhí)行。

OVERVIEW

The Maverick? EP7311 is designed for ultra-low-power applications such as PDAs, smart cellular phones, and industrial hand held information appliances. The core logic functionality of the device is built around an ARM720T processor with 8 KB of four-way set associative unified cache and a write buffer. Incorporated into the ARM720T is an enhanced memory management unit (MMU) which allows for support of sophisticated operating systems like Linux?.

FEATURES

■ ARM720T Processor

— ARM7TDMI CPU

— 8 KB of four-way set-associative cache

— MMU with 64-entry TLB

— Thumb code support enabled

■ Ultra low power

— 90 mW at 74 MHz typical

— 30 mW at 18 MHz typical

— 10 mW in the Idle State

— <1 mW in the Standby State

■ 48 KB of on-chip SRAM

■ MaverickKey? IDs

— 32-bit unique ID can be used for SDMI compliance

— 128-bit random ID

■ Dynamically programmable clock speeds of

18, 36, 49, and 74 MHz

■ LCD controller

— Interfaces directly to a single-scan panel

monochrome STN LCD

— Interfaces to a single-scan panel color STN LCD

with minimal external glue logic

■ Full JTAG boundary scan and Embedded ICE

support

■ Integrated Peripheral Interfaces

— 32-bit SDRAM Interface up to 2 external banks

— 8/32/16-bit SRAM/FLASH/ROM Interface

— Multimedia Codec Port

— Two Synchronous Serial Interfaces (SSI1, SSI2)

— CODEC Sound Interface

— 8×8 Keypad Scanner

— 27 General Purpose Input/Output pins

— Dedicated LED flasher pin from the RTC

■ Internal Peripherals

— Two 16550 compatible UARTs

— IrDA Interface

— Two PWM Interfaces

— Real-time Clock

— Two general purpose 16-bit timers

— Interrupt Controller

— Boot ROM

■ Package

— 208-Pin LQFP

— 256-Ball PBGA

— 204-Ball TFBGA

■ The fully static EP7311 is optimized for low power

dissipation and is fabricated on a 0.25 micron CMOS

process

■ Development Kits

— EDB7312: Development Kit with color STN LCD

on board.

— EDB7312-LW: EDB7312 with Lynuxworks’

BlueCat Linux Tools and software for Windows

host (free 30 day BlueCat support from

Lynuxworks).

— EDB7312-LL: EDB7312 with Lynuxworks’ BlueCat

Linux Tools and software for Linux host (free 30

day BlueCat support from Lynuxworks).