EP7312-CV-90 Cirrus Logic Inc, EP7312-CV-90 Datasheet - Page 3
![IC ARM720T MCU 90MHZ 208-LQFP](/photos/12/44/124401/ep7312-cv-90_sml.jpg)
EP7312-CV-90
Manufacturer Part Number
EP7312-CV-90
Description
IC ARM720T MCU 90MHZ 208-LQFP
Manufacturer
Cirrus Logic Inc
Series
EP7r
Datasheet
1.EP7312-CVZ.pdf
(64 pages)
Specifications of EP7312-CV-90
Core Processor
ARM7
Core Size
32-Bit
Speed
90MHz
Connectivity
Codec, DAI, EBI/EMI, IrDA, Keypad, SPI/Microwire1, UART/USART
Peripherals
LCD, LED, MaverickKey, PWM
Number Of I /o
27
Program Memory Type
ROMless
Ram Size
56K x 8
Voltage - Supply (vcc/vdd)
2.3 V ~ 2.7 V
Oscillator Type
External
Operating Temperature
0°C ~ 70°C
Package / Case
208-LQFP
For Use With
598-1209 - KIT DEVELOPMENT EP73XX ARM7
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
Program Memory Size
-
Data Converters
-
Other names
598-1238
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
EP7312-CV-90
Manufacturer:
Cirrus Logic Inc
Quantity:
10 000
Table of Contents
FEATURES ...........................................................................................................................................1
OVERVIEW ...........................................................................................................................................1
Description of the EP7312’s Components, Functionality, and Interfaces ....................................6
ELECTRICAL SPECIFICATIONS ......................................................................................................13
Timings ...............................................................................................................................................15
DS508F1
Processor Core - ARM720T ..................................................................................................................................6
Power Management ..............................................................................................................................................6
MaverickKey™ Unique ID ......................................................................................................................................6
Memory Interfaces .................................................................................................................................................6
Digital Audio Capability .........................................................................................................................................7
Universal Asynchronous Receiver/Transmitters (UARTs) .....................................................................................7
Digital Audio Interface (DAI) ..................................................................................................................................7
CODEC Interface ..................................................................................................................................................8
SSI2 Interface ........................................................................................................................................................8
Synchronous Serial Interface ................................................................................................................................8
LCD Controller .......................................................................................................................................................8
64-Key Keypad Interface .......................................................................................................................................8
Interrupt Controller ................................................................................................................................................9
Real-Time Clock ....................................................................................................................................................9
PLL and Clocking ..................................................................................................................................................9
DC-to-DC Converter Interface (PWM) .................................................................................................................10
Timers .................................................................................................................................................................10
General Purpose Input/Output (GPIO) ................................................................................................................10
Hardware Debug Interface ..................................................................................................................................10
LED Flasher ........................................................................................................................................................10
Internal Boot ROM ...............................................................................................................................................10
Packaging ............................................................................................................................................................10
Pin Multiplexing ...................................................................................................................................................11
System Design ....................................................................................................................................................12
Absolute Maximum Ratings .................................................................................................................................13
Recommended Operating Conditions .................................................................................................................13
DC Characteristics ..............................................................................................................................................13
SDRAM Interface ................................................................................................................................................16
Static Memory .....................................................................................................................................................21
SSI1 Interface ......................................................................................................................................................26
SSI2 Interface ......................................................................................................................................................27
LCD Interface ......................................................................................................................................................28
JTAG Interface .....................................................................................................................................................29
Timing Diagram Conventions ....................................................................................................................15
Timing Conditions ......................................................................................................................................15
SDRAM Load Mode Register Cycle ..........................................................................................................17
SDRAM Burst Read Cycle .........................................................................................................................18
SDRAM Burst Write Cycle .........................................................................................................................19
SDRAM Refresh Cycle ..............................................................................................................................20
Static Memory Single Read Cycle .............................................................................................................22
Static Memory Single Write Cycle .............................................................................................................23
Static Memory Burst Read Cycle ...............................................................................................................24
Static Memory Burst Write Cycle ...............................................................................................................25
©
Copyright Cirrus Logic, Inc. 2005
(All Rights Reserved)
High-Performance, Low-Power System on Chip
EP7312
3