EP7311-CB-90 Cirrus Logic Inc, EP7311-CB-90 Datasheet - Page 17

• Manufacturer Part Number: EP7311-CB-90
• Description: IC ARM720T MCU 90MHZ 256-PBGA
• Manufacturer: Cirrus Logic Inc
• Series: EP7r

Specifications of EP7311-CB-90

• Core Processor: ARM7
• Core Size: 32-Bit
• Speed: 90MHz
• 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: 256-BGA
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Program Memory Size: -
• Data Converters: -
• Other names: 598-1221

SDRAM Load Mode Register Cycle
DS506F1
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
t
t
t
MWa
t
CSa
RAa
CAa
ADv
Figure 3. SDRAM Load Mode Register Cycle Timing Measurement
©
Copyright Cirrus Logic, Inc. 2005
(All Rights Reserved)
t
t
t
CSd
RAd
CAd
t
MWd
t
ADx
High-Performance, Low-Power System on Chip
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