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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)： | 6/48頁 |
| 文件大小： | 767K |
| 代理商： | SCF5250VM120 |
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SCF5250 Integrated ColdFire Microprocessor Data Sheet, Rev. 1.1
Introduction
1.2.18 I
2
C Module
The two-wire I
2
C bus interface, which is compliant with the Philips I
2
C bus standard, is a bidirectional
serial bus that exchanges data between devices. The I
2
C bus minimizes the interconnection between
devices in the end system and is best suited for applications that need occasional bursts of rapid
communication over short distances among several devices. Bus capacitance and the number of unique
addresses limit the maximum communication length and the number of devices that can be connected.
Freescale Semiconductor
6
1.2.19 Chip-Selects
Up to four programmable chip-select outputs provide signals that enable glueless connection to external
memory and peripheral circuits. The base address, access permissions and automatic wait-state insertion
are programmable with configuration registers. These signals also interface to 16-bit ports.
CS0 is active after reset to provide boot-up from external FLASH/ROM.
1.2.20 GPIO Interface
A total of 60 General Purpose inputs and 57 General Purpose outputs are available. These are multiplexed
with various other signals. Seven of the GPIO inputs have edge sensitive interrupt capability.
1.2.21 Interrupt Controller
The interrupt controller provides user-programmable control of a total of 57 interrupts. There are 49
internal interrupt sources. In addition, there are 7 GPIOs where interrupts can be generated on the rising
or falling edge of the pin. All interrupts are autovectored and interrupt levels are programmable.
1.2.22 JTAG
To help with system diagnostics and manufacturing testing, the SCF5250 includes dedicated
user-accessible test logic that complies with the IEEE 1149.1A standard for boundary scan testability,
often referred to as Joint Test Action Group, or JTAG. For more information, refer to the IEEE 1149.1A
standard. Freescale provides BSDL files for JTAG testing.
1.2.23 System Debug Interface
The ColdFire processor core debug interface supports real-time instruction trace and debug, plus
background-debug mode. A background-debug mode (BDM) interface provides system debug.
In real-time instruction trace, four status lines provide information on processor activity in real time (PST
pins). A four-bit wide debug data bus (DDATA) displays operand data and change-of-flow addresses,
which helps track the machine’s dynamic execution path.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 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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