EP7312-IBZ Cirrus Logic Inc, EP7312-IBZ Datasheet - Page 3

IC ARM720T MCU 74MHZ 256-PBGA

EP7312-IBZ

Manufacturer Part Number
EP7312-IBZ
Description
IC ARM720T MCU 74MHZ 256-PBGA
Manufacturer
Cirrus Logic Inc
Series
EP7r
Datasheets

Specifications of EP7312-IBZ

Core Size
32-Bit
Core Processor
ARM7
Speed
74MHz
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
-40°C ~ 85°C
Package / Case
256-BGA
Controller Family/series
(ARM7)
No. Of I/o's
27
Ram Memory Size
48KB
Cpu Speed
74MHz
No. Of Timers
2
No. Of Pwm Channels
2
Digital Ic Case Style
BGA
Embedded Interface Type
SSI, UART
Rohs Compliant
Yes
Processor Series
EP73xx
Core
ARM720T
Data Bus Width
32 bit
3rd Party Development Tools
MDK-ARM, RL-ARM, ULINK2
Development Tools By Supplier
EDB7312
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With
598-1209 - KIT DEVELOPMENT EP73XX ARM7
Eeprom Size
-
Program Memory Size
-
Data Converters
-
Lead Free Status / Rohs Status
 Details
Other names
598-1242

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
EP7312-IBZ
Manufacturer:
CIRRUS
Quantity:
13
Part Number:
EP7312-IBZ
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

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