EP7312-CB Cirrus Logic Inc, EP7312-CB Datasheet - Page 18

• Manufacturer Part Number: EP7312-CB
• Description: IC ARM720T MCU 74MHZ 256-PBGA
• Manufacturer: Cirrus Logic Inc
• Series: EP7r

Specifications of EP7312-CB

• 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: 256-BGA
• Controller Family/series: (ARM7)
• No. Of Timers 8/12/16/32 Bits: 0 / 0 / 2 / 0
• Interface: SSI, UART
• Embedded Interface Type: SSI, UART
• Mounting Type: Surface Mount
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• For Use With: 598-1209 - KIT DEVELOPMENT EP73XX ARM7
• Eeprom Size: -
• Program Memory Size: -
• Data Converters: -
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant, Contains lead / RoHS non-compliant
• Other names: 598-1232

EP7312
High-Performance, Low-Power System on Chip
SDRAM Burst Read Cycle
18
SDMWE
SDCLK
SDRAS
SDCAS
SDQM
ADDR
SDCS
DATA
[0:3]
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
CSd
RAd
t
t
CSa
RAa
ADRAS
t
ADv
Figure 4. SDRAM Burst Read Cycle Timing Measurement
©
Copyright Cirrus Logic, Inc. 2005
t
t
CSd
CAd
t
t
CSa
CAa
(All Rights Reserved)
t
ADv
ADCAS
t
DAs
D1
t
DAh
t
DAs
D2
t
DAh
t
DAs
D3
t
DAh
t
DAs
D4
t
DAh
DS508F1
t
RAnv