MPC852TADS Freescale Semiconductor, MPC852TADS Datasheet - Page 51

• Manufacturer Part Number: MPC852TADS
• Description: Networking Modules & Development Tools ADS BOARD FOR 852
• Manufacturer: Freescale Semiconductor
• Type: Network Controller & Processorr

Specifications of MPC852TADS

• Memory Type: Flash, SDRAM
• Interface Type: RS-232, Ethernet, PCMCIA
• Operating Voltage: 1.8 V to 3.3 V
• Operating Temperature Range: 0 C to + 30 C
• Board Size: 233 mm x 150 mm
• Product: Modules
• For Use With/related Products: MPC852T
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

39
TABLE 4-3. "EDO DRAM Performance
4•6•3
Prior to a RAS refresh, the DRAM refresh is CAS. The refresh is controlled by UPMA. Refresh logic is clocked by
the MPC’s BRG clock. The latter is not influenced by the MPC’s low-power divider.
Single Read
Single Write
Burst Read
Burst Write
Refresh
Single Read
Single Write
Burst Read
Burst Write
Refresh
System Clock Frequency [MHz]
System Clock Frequency [MHz]
a. Four-beat refresh burst.
b. Doesn’t include arbitration overhead.
a. Four-beat refresh burst.
b. Doesn’t include arbitration overhead.
DRAM Delay [nsec]
DRAM Delay [nsec]
Refresh Control
TABLE 4-2. Regular DRAM Performance Figures
TABLE 4-3. EDO DRAM Performance Figures
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
Functional Description
6
4
6,2,3,2
4,2,2,2
21
6
4
6,2,2,2
4,2,2,2
21
Figures".
a b
a b
MPC852TADS - User’s Manual
60
60
50
50
6
4
4,2,2,2
25
6
4
4,2,2,2
25
6,3,2,3
6,3,2,2
Number of System Clock Cycles
Number of System Clock Cycles
a b
a b
70
70
3
3
3,2,2,2
3,1,2,2
13
3
2
3,1,1,1
2,1,1,1
13
a b
a b
60
60
25
25
4
3
4,2,2,2
3,2,2,2
13
4
3
4,1,2,2
3,2,2,2
13
Release 1.0
a b
a b
70
70