ELANSC400-66AC AMD (ADVANCED MICRO DEVICES), ELANSC400-66AC Datasheet - Page 104

• Manufacturer Part Number: ELANSC400-66AC
• Manufacturer: AMD (ADVANCED MICRO DEVICES)

Specifications of ELANSC400-66AC

• Cpu Family: Elan
• Device Core Size: 16/32Bit
• Frequency (max): 66MHz
• Interface Type: ISA
• Program Memory Type: ROMLess
• Program Memory Size: Not Required
• Number Of Timers - General Purpose: 1
• Operating Supply Voltage (typ): 3.3V
• Operating Supply Voltage (max): 3.6V
• Operating Supply Voltage (min): 3V
• Instruction Set Architecture: CISC
• Operating Temp Range: 0C to 95C
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Pin Count: 292
• Package Type: BGA
• Lead Free Status / Rohs Status: Not Compliant

Notes:
The diagram above shows RAS and CAS behavior for an ÉlanSC400 or ÉlanSC410 microcontroller running at a frequency of
16 MHz or less. In this case, the RAS signals are not staggered and all are driven (Low) at the same time to consume less DRAM
bandwidth for refresh activity (consumed due to a slower clock frequency).
104
CASH3–CASH0
CASL3–CASL0
RAS0
RAS1
RAS2
RAS3
MWE
Élan™SC400 and ÉlanSC410 Microcontrollers Data Sheet
Figure 42. DRAM Slow Refresh
t27
t7a
t32
t28
t29
t22
t22
t22
t22
t33
t33
t33
t33