2

DS507PP1

EP7309

High-Performance, Low-Power System on Chip

I Dynamically programmable clock speeds of 18, 36, 49,

and 74 MHz

I 48 KB of on-chip SRAM

I MaverickKey™ IDs

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

— 128-bit random ID

I 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

support

I Integrated Peripheral Interfaces

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

— Digital Audio Interface providing glueless

interface to low-power DACs, ADCs and CODECs

— Two Synchronous Serial Interfaces (SSI1, SSI2)

— CODEC Sound Interface

—8

×8Keypad Scanner

— 27 General Purpose Input/Output pins

— Dedicated LED flasher pin from the RTC

I Internal Peripherals

— Two 16550 compatible UARTs

—IrDA Interface

—Two PWM Interfaces

—Real-time Clock

— Two general purpose 16-bit timers

— Interrupt Controller

—Boot ROM

I Package

— 208-Pin LQFP

—256-Ball PBGA

—204-Ball TFBGA

I The fully static EP7309 is optimized for low power

dissipation and is fabricated on a 0.25 micron CMOS

process

The EP7309 is designed for ultra-low-power operation.

Its core operates at only 2.5 V, while its I/O has an

operation range of 2.5 V–3.3 V. The device has three basic

power states: operating, idle and standby.

MaverickKey unique hardware programmed IDs are a

solution to the growing concern over secure web content

and commerce. With Internet security playing an

important role in the delivery of digital media such as

books or music, traditional software methods are quickly

becoming unreliable. The MaverickKey unique IDs

provide OEMs with a method of utilizing specific

hardware IDs such as those assigned for SDMI (Secure

Digital Music Initiative) or any other authentication

mechanism.

The EP7309 integrates an interface to enable a direct

connection to many low cost, low power, high quality

audio converters. In particular, the DAI can directly

interface with the Crystal‚ CS43L41/42/43 low-power

audio DACs and the Crystal‚ CS53L32 low-power ADC.

Some of these devices feature digital bass and treble

boost, digital volume control and compressor-limiter

functions.

Simply by adding desired memory and peripherals to the

highly integrated EP7309 completes a low-power system

solution. All necessary interface logic is integrated on-

chip.

Contacting Cirrus Logic Support

For a complete listing of Direct Sales, Distributor, and Sales Representative contacts, visit the Cirrus Logic web site at:

http://www.cirrus.com/corporate/contacts

Preliminary product information describes products which are in production, but for which full characterization data is not yet available. Advance product information de-

scribes products which are in development and subject to development changes. Cirrus Logic, Inc. has made best efforts to ensure that the information contained in this

document is accurate and reliable. However, the information is subject to change without notice and is provided “AS IS” without warranty of any kind (express or implied).

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