EP7312-CVZ Cirrus Logic Inc, EP7312-CVZ Datasheet - Page 10

• Manufacturer Part Number: EP7312-CVZ
• Description: IC ARM720T MCU 90/74MHZ 208-LQFP
• Manufacturer: Cirrus Logic Inc
• Series: EP7r

Specifications of EP7312-CVZ

• 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: 0°C ~ 70°C
• Package / Case: 208-LQFP
• 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: LQFP
• 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: 598-1134

EP7312
High-Performance, Low-Power System on Chip
DC-to-DC Converter Interface (PWM)
•
Table 14
assignments.
Timers
•
•
General Purpose Input/Output (GPIO)
•
•
Table 15
Hardware Debug Interface
•
Table 16
assignments.
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:
Full JTAG boundary scan and Embedded ICE
Pin Mnemonic
Table 15. General Purpose Input/Output Pin Assignments
Table 14. DC-to-DC Converter Interface Pin Assignments
Pin Mnemonic
shows the GPIO pin assignments.
Pins are multiplexed. See
more information.
shows the DC-to-DC Converter Interface pin
shows the Hardware Debug Interface pin
(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 19 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
®
support
for
(All Rights Reserved)
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.
Flasher pin assignments.
•
•
•
•
Internal Boot ROM
The internal 128-byte Boot ROM facilitates download of saved
code to the on-board SRAM/FLASH.
Packaging
The EP7312 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
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 16. Hardware Debug Interface Pin Assignments
Pin Mnemonic
Pins are multiplexed. See
more information.
Table 17. LED Flasher Pin Assignments
(Note)
I/O
O
I
I
I
I
I/O
O
Table 19 on page 11
JTAG clock
JTAG data input
JTAG data output
JTAG async reset input
JTAG mode select
LED flasher driver
Table 17
Pin Description
Pin Description
shows the LED
for
DS508F1