MPC8544VTALF Freescale Semiconductor, MPC8544VTALF Datasheet - Page 386

MPU POWERQUICC III 783-PBGA

MPC8544VTALF

Manufacturer Part Number
MPC8544VTALF
Description
MPU POWERQUICC III 783-PBGA
Manufacturer
Freescale Semiconductor
Datasheets

Specifications of MPC8544VTALF

Processor Type
MPC85xx PowerQUICC III 32-Bit
Speed
667MHz
Voltage
1V
Mounting Type
Surface Mount
Package / Case
783-FCPBGA
Processor Series
MPC85xx
Core
e500
Data Bus Width
32 bit
Maximum Clock Frequency
667 MHz
Maximum Operating Temperature
+ 105 C
Mounting Style
SMD/SMT
Data Ram Size
32 KB
I/o Voltage
1.8 V, 3.3 V
Interface Type
I2C, HSSI, DUART
Minimum Operating Temperature
0 C
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Features
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant

Available stocks

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Part Number:
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Part Number:
MPC8544VTALFA
Manufacturer:
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Quantity:
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DDR Memory Controller
Table 9-48
Note that in the absence of refresh support, system software must preserve DDR SDRAM data (such as by
copying the data to disk) before entering the power-saving mode.
The dynamic power-saving mode uses the CKE DDR SDRAM pin to dynamically power down when there
is no system memory activity. The CKE pin is negated when both of the following conditions are met:
CKE is reasserted when a new access or refresh is scheduled or the dynamic power mode is disabled. This
mode is controlled with DDR_SDRAM_CFG[DYN_PWR_MGMT].
Dynamic power management mode offers tight control of the memory system’s power consumption by
trading power for performance through the use of CKE. Powering up the DDR SDRAM when a new
memory reference is scheduled causes an access latency penalty, depending on whether active or precharge
powerdown is used, along with the settings of TIMING_CFG_0[ACT_PD_EXIT] and
TIMING_CFG_0[PRE_PD_EXIT]. A penalty of 1 cycle is shown in
9-62
No memory refreshes are scheduled
No memory accesses are scheduled
summarizes the refresh types available in each power-saving mode.
MPC8544E PowerQUICC III Integrated Host Processor Family Reference Manual, Rev. 1
Table 9-48. DDR SDRAM Power-Saving Modes Refresh Configuration
COMMAND
Bus Clock
CKE
Figure 9-46. DDR SDRAM Power-Down Mode
Power Saving Mode
24
Sleep
NOP
Refresh Type
None
Self
SREN
Figure
1
NOP
9-46.
ACT
Freescale Semiconductor

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