參數(shù)資料
型號(hào)： SCF5250
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?。?/td> 767K
代理商： SCF5250
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
相關(guān)PDF資料
PDF描述
SCF5250AG120 SCF5250 Integrated ColdFire Microprocessor
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
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SCF5250CAG120 功能描述:IC MPU COLDFIRE 120MHZ 144-QFP RoHS:是 類別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:SCF52xx 標(biāo)準(zhǔn)包裝:330 系列:- 核心處理器:- 芯體尺寸:8/16-位 速度:40MHz 連通性:UART/USART 外圍設(shè)備:DMA，PWM，WDT 輸入/輸出數(shù):32 程序存儲(chǔ)器容量:- 程序存儲(chǔ)器類型:外部程序存儲(chǔ)器 EEPROM 大小:- RAM 容量:- 電壓 - 電源 (Vcc/Vdd):4.5 V ~ 5.5 V 數(shù)據(jù)轉(zhuǎn)換器:- 振蕩器型:內(nèi)部 工作溫度:-40°C ~ 85°C 封裝/外殼:100-BQFP 包裝:管件
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