MPC8250ACZUMHBC Freescale Semiconductor, MPC8250ACZUMHBC Datasheet - Page 19

• Manufacturer Part Number: MPC8250ACZUMHBC
• Description: IC MPU POWERQUICC II 480-TBGA
• Manufacturer: Freescale Semiconductor

Specifications of MPC8250ACZUMHBC

• Processor Type: MPC82xx PowerQUICC II 32-bit
• Speed: 266MHz
• Voltage: 2V
• Mounting Type: Surface Mount
• Package / Case: 480-TBGA
• Processor Series: MPC8xxx
• Core: 603e
• Data Bus Width: 32 bit
• Maximum Clock Frequency: 266 MHz
• Maximum Operating Temperature: + 105 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• For Use With: CWH-PPC-8248N-VE - KIT EVAL SYSTEM QUICCSTART 8248
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Features: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Figure 11
Figure 12
Freescale Semiconductor
shows signal behavior in MEMC mode.
is a graphical representation of
Generally, all MPC8250 bus and system output signals are driven from the
rising edge of the input clock (CLKin). Memory controller signals,
however, trigger on four points within a CLKin cycle. Each cycle is divided
by four internal ticks: T1, T2, T3, and T4. T1 always occurs at the rising
edge, and T3 at the falling edge, of CLKin. However, the spacing of T2 and
T4 depends on the PLL clock ratio selected, as shown in
Memory controller signals
1:2, 1:3, 1:4, 1:5, 1:6
CLKin
CLKin
CLKin
PLL Clock Ratio
Figure 12. Internal Tick Spacing for Memory Controller Signals
1:2.5
1:3.5
T1
T1
T1
Table 11. Tick Spacing for Memory Controller Signals
CLKin
V_CLK
T2
MPC8250 Hardware Specifications, Rev. 2
T2
T2
Figure 11. MEMC Mode Diagram
1/4 CLKin
3/10 CLKin
4/14 CLKin
Tick Spacing (T1 Occurs at the Rising Edge of CLKin)
Table
T3
T3
T3
T2
11.
NOTE
T4
T4
T4
1/2 CLKin
1/2 CLKin
1/2 CLKin
sp34/sp30
T3
for 1:2, 1:3, 1:4, 1:5, 1:6
for 1:2.5
for 1:3.5
Table
3/4 CLKin
8/10 CLKin
11/14 CLKin
Electrical and Thermal Characteristics
11.
T4
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