EP7312-IV Cirrus Logic Inc, EP7312-IV Datasheet - Page 19

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

Specifications of EP7312-IV

• Core Processor: ARM7
• Core Size: 32-Bit
• 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: 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: 598-1245

SDRAM Burst Write Cycle
DS508F1
SDMWE
SDRAS
SDCAS
SDCLK
SDQM
ADDR
SDCS
DATA
Note:
1. Timings are shown with CAS latency = 2
2. The SDCLK signal may be phase shifted relative to the rest of the SDRAM control and data signals due to uneven loading.
Designers should take care to ensure that delays between SDRAM control and data signals are approximately equal
t
RAa
t
t
Figure 5. SDRAM Burst Write Cycle Timing Measurement
DAd
t
CSa
ADv
©
Copyright Cirrus Logic, Inc. 2005
(All Rights Reserved)
t
t
RAd
CSd
ADRAS
0
t
t
t
t
MWa
CSa
CAa
ADv
D1
t
t
CSd
t
DAd
CAd
High-Performance, Low-Power System on Chip
t
MWd
t
D2
DAd
ADCAS
t
D3
DAd
D4
EP7312
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