參數(shù)資料
型號： PXA270
廠商： Intel Corp.
英文描述： Electrical, Mechanical, and Thermal Specification
中文描述： 電氣，機(jī)械和熱規(guī)格
文件頁數(shù)： 54/126頁
文件大?。?/td> 1563K
代理商： PXA270
5-4
Electrical, Mechanical, and Thermal Specification
Intel PXA270 Processor
Electrical Specifications
Table 5-3. Memory Voltage and Frequency Electrical Specifications
Table 5-4
shows the supported core frequency and core supply voltage operating ranges for the
PXA270 processor. Each frequency range is specified in the following format:
(core frequency/internal system bus frequency/memory controller frequency/SDRAM frequency)
Note:
Refer to the “Clocks and Power” section of the
Intel PXA27x Processor Family Developers
Manual
for supported frequencies, clock register settings as listed in
Table 5-4
.
Symbol
Description
Min
Typical
Max
Units
Memory Voltage and Frequency Range 1
VMEM1
Voltage applied on VCC_MEM
1.71
1.80
2.16
V
fSM1A
External synchronous memory frequency,
SDCLK1, SDCLK2
13
—
104
MHz
fSM1B
External synchronous memory frequency,
SDCLK0
13
—
104
MHz
Tsysramp
Ramp Rate
—
10
12
mV/uS
Memory Voltage and Frequency Range 2
VMEM2
Voltage applied on VCC_MEM
2.25
2.50
2.75
V
fSM2A
External synchronous memory frequency,
SDCLK1, SDCLK2
13
—
104
MHz
fSM2B
External synchronous memory frequency,
SDCLK0
13
—
104
MHz
Tsysramp
Ramp Rate
—
10
12
mV/uS
Memory Voltage and Frequency Range 3
VMEM3
Voltage applied on VCC_MEM
2.70
3.0
3.3
V
fSM3A
External synchronous memory frequency,
SDCLK1, SDCLK2
13
—
104
MHz
fSM3B
External synchronous memory frequency,
SDCLK0
13
—
104
MHz
Tsysramp
Ramp Rate
—
10
12
mV/uS
Memory Voltage and Frequency Range 4
VMEM4
Voltage applied on VCC_MEM
2.97
3.30
3.63
V
fSM4A
External synchronous memory frequency,
SDCLK1, SDCLK2
13
—
104
MHz
fSM4B
External synchronous memory frequency,
SDCLK0
13
—
104
MHz
Tsysramp
Ramp Rate
—
10
mV/uS
Table 5-4. Core Voltage and Frequency Electrical Specifications (Sheet 1 of 2)
Symbol
Description
Min
Typical
Max
Units
Core Voltage and Frequency Range 1 (13/13/13/13)
VVCCC1
Voltage applied on VCC_CORE
0.8075
0.85
1.705
V
fCORE1
Core operating frequency
13
—
13
MHz
Tpwrramp
Ramp Rate
—
10
12
mV/uS
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