EP7311-CV Cirrus Logic Inc, EP7311-CV Datasheet - Page 10

• Manufacturer Part Number: EP7311-CV
• Description: Low-Power Processor 208-Pin LQFP
• Manufacturer: Cirrus Logic Inc
• Series: EP7r

Specifications of EP7311-CV

• Core Processor: ARM7
• Core Size: 32-Bit
• Speed: 74MHz
• Connectivity: Codec, EBI/EMI, IrDA, Keypad, Multimedia Codec, 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
• Processor Series: EP73xx
• Core: ARM720T
• Data Bus Width: 32 bit
• 3rd Party Development Tools: MDK-ARM, RL-ARM, ULINK2
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Program Memory Size: -
• Data Converters: -
• Lead Free Status / Rohs Status: No
• Other names: 598-1224

EP7311
High-Performance, Low-Power System on Chip
DC-to-DC converter interface (PWM)
•
Timers
•
•
General Purpose Input/Output (GPIO)
•
•
10
DRIVE[1:0]
FB[1:0]
PA[7:0]
PB[7:0]
PD[0]/LEDFLSH
PD[5:1]
PD[7:6]/SDQM[1:0]
PE[1:0]/BOOTSEL[1:0] (Note)
PE[2]/CLKSEL
Provides two 96 kHz clock outputs with programmable
duty ratio (from 1-in-16 to 15-in-16) that can be used to
drive a positive or negative DC to DC converter
Internal (RTC) timer
Two internal 16-bit programmable hardware count-down
timers
Three 8-bit and one 3-bit GPIO ports
Supports scanning keyboard matrix
Note:
Pin Mnemonic
Table O. General Purpose Input/Output Pin Assignments
Table N. DC-to-DC Converter Interface Pin Assignments
Pin Mnemonic
Pins are multiplexed. See
information.
(Note)
(Note)
(Note)
I/O
I/O
I
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
Table S on page 11
PWM drive output
PWM feedback input
GPIO port A
GPIO port B
GPIO port D
GPIO port D
GPIO port D
GPIO port E
GPIO port E
Pin Description
Pin Description
©
Copyright Cirrus Logic, Inc. 2005
for more
(All Rights Reserved)
Hardware debug Interface
•
LED Flasher
A dedicated LED flasher module can be used to generate a low
frequency signal on Port D pin 0 for the purpose of blinking an
LED without CPU intervention. The LED flasher feature is
ideal as a visual annunciator in battery powered applications,
such as a voice mail indicator on a portable phone or an
appointment reminder on a PDA.
•
•
•
•
Internal Boot ROM
The internal 128 byte Boot ROM facilitates download of saved
code to the on-board SRAM/FLASH.
Packaging
The EP7311 is available in a 208-pin LQFP package, 256-ball
PBGA package or a 204-ball TFBGA package.
TCLK
TDI
TDO
nTRST
TMS
PD[0]/LEDFLSH
Full JTAG boundary scan and Embedded ICE
Software adjustable flash period and duty cycle
Operates from 32 kHz RTC clock
Will continue to flash in IDLE and STANDBY states
4 mA drive current
Note:
Pin Mnemonic
Table P. Hardware Debug Interface Pin Assignments
Pin Mnemonic
Pins are multiplexed. See
information.
Table Q. LED Flasher Pin Assignments
(Note)
I/O
O
I
I
I
I
I/O
O
Table S on page 11
JTAG clock
JTAG data input
JTAG data output
JTAG async reset input
JTAG mode select
LED flasher driver
Pin Description
Pin Description
®
for more
support
DS506F1