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參數(shù)資料
| 型號： | SCF5250VM120 |
| 廠商： | Motorola, Inc. |
| 英文描述： | SCF5250 Integrated ColdFire Microprocessor |
| 中文描述： | SCF5250提供了集成的ColdFire微處理器 |
| 文件頁數(shù)： | 21/48頁 |
| 文件大小： | 767K |
| 代理商： | SCF5250VM120 |
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Electrical Characteristics
SCF5250 Integrated ColdFire Microprocessor Data Sheet, Rev. 1.1
Freescale Semiconductor
21
4.20 BDM/JTAG Signals
The SCF5250 complies with the IEEE 1149.1A JTAG testing standard. The JTAG test pins are multiplexed
with background debug pins.
4.21 Clock and Reset signals
These signals configure the SCF5250 and provide interface signals to the external system.
4.21.1 Reset In
Asserting RSTI causes the SCF5250SCF5250 to enter reset exception processing. When RSTI is
recognized, the data bus is tri-stated.
4.21.2 Clock Input
SCF5250 includes on -chip crystal oscillator. The crystal should be connected between CRIN and CROUT.
An externally generated clock signal can also be used and should be connected directly to the CRIN pin.
4.22 Wake-Up Signal
To exit power down mode, apply a LOW level to the WAKE_UP/GPIO21 input pin.
4.23 On-chip Linear Regulator
The SCF5250 includes an on-chip linear regulator. This regulator provides an 1.2 V output which is
intended to be used to power the SCF5250 core. Three pins are associated with this function.
LININ, LINOUT and LINGND. Typically LININ would be fed by the I/O (PAD) supply (3.3 V) with
separate filtering recommended to provide some isolation between the I/O and the core.
In portable solutions this linear regulator may not be efficient enough and in this case we would expect the
1.2 V supply to be generated externally, possibly by a highly efficient DC-DC convertor.
If not used leave pins not connected.
5
Electrical Characteristics
Table 14. Maximum Ratings
Rating
Symbol
Value
Units
Supply Core Voltage
V
cc
-0.5 to +2.5
V
Maximum Core Operating Voltage
V
cc
+1.32
V
Minimum Core Operating Voltage
V
cc
+1.08
V
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相關代理商/技術參數(shù) |
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|---|---|
| SCF5251VM | 制造商:Freescale Semiconductor 功能描述: |
| SCF54417M0CMJ250 | 制造商:Freescale Semiconductor 功能描述:COLDFIREV4M CORE - Bulk |
| SCF5740 | 功能描述:LED 顯示器和配件 5x7 Red 0.27" 4-CHARACTER RoHS:否 制造商:Avago Technologies 顯示器類型:7 Segment 數(shù)位數(shù)量:2 字符大小:7.8 mm x 14.22 mm 照明顏色:Red 波長:628 nm 共用管腳:Common Anode 工作電壓:2.05 V 工作電流:20 mA 最大工作溫度:+ 85 C 最小工作溫度:- 35 C 封裝:Tube |
| SCF5741 | 制造商:OSRAM 功能描述: |
| SCF5742 | 功能描述:LED 顯示器和配件 5x7 Hi-Eff Red 0.27" 4-CHARACTER RoHS:否 制造商:Avago Technologies 顯示器類型:7 Segment 數(shù)位數(shù)量:2 字符大小:7.8 mm x 14.22 mm 照明顏色:Red 波長:628 nm 共用管腳:Common Anode 工作電壓:2.05 V 工作電流:20 mA 最大工作溫度:+ 85 C 最小工作溫度:- 35 C 封裝:Tube |
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