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MCF5206EUM 数据表(PDF) 7 Page - Freescale Semiconductor, Inc |
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MCF5206EUM 数据表(HTML) 7 Page - Freescale Semiconductor, Inc |
7 / 12 page MOTOROLA MCF5206e Integrated ColdFire® Microprocessor Product Brief 7 MCF5206e Overview 1.1.11.4 Interrupt Controller The interrupt controller provides user-programmable control of 3 or 7 external interrupt to any one of 7 interrupt levels and 4 priority levels. The 3 external interrupt signals can be configured as either fixed interrupt levels 1, 4, and 7, or as a 7-level encoded interrupt. The external interrupts can also be programmed to any one of the four priority levels within the respective interrupt levels. 1.1.11.5 System Protection The MCF5206e processor contains a 16-bit software watchdog timer with an 8-bit prescaler. The programmable software watchdog timer provides either a level 7 interrupt or a hardware reset on timeout. The MCF5206e processor also contains a reset status register that indicates the cause of the last reset. 1.1.11.6 JTAG To help with system diagnostics and testing during manufacture, the MCF5206e processor includes dedicated user-accessible test logic that complies with the IEEE 1149.1 standard for boundary scan testability, often referred to as Joint Test Action Group, or JTAG. For more information, refer to the IEEE 1149.1 standard. 1.1.12 System Debug Interface The ColdFire interface supports real-time trace and background debug mode. A 4-pin background debug mode (BDM) interface provides system debug. The BDM is a superset of the BDM interface provided on Motorola’s 683xxx family of parts. In real-time trace, 4 status lines provide information on processor activity in real time (PST pins). A 4-bit wide debug data bus (DDATA) displays operand data, which helps track the machine’s dynamic execution path as the change-of-flow instructions execute. These signals are multiplexed with the 8-bit parallel port for application development which does not use real-time trace. 1.1.13 System Diagrams This section includes system and pinout diagrams. Figure 2 shows the system of the MCF5206e device. Freescale Semiconductor, Inc. For More Information On This Product, Go to: www.freescale.com |
类似零件编号 - MCF5206EUM |
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类似说明 - MCF5206EUM |
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