mcf5407 Freescale Semiconductor, Inc, mcf5407 Datasheet - Page 519
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mcf5407
Manufacturer Part Number
mcf5407
Description
Mcf5407 Coldfire Integrated Microprocessor User
Manufacturer
Freescale Semiconductor, Inc
Datasheet
1.MCF5407.pdf
(546 pages)
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A.8.6 Debug C Summary
The preceding section describes additional functionality requested by ColdFire customers
and third-party developers. The Debug C enhancements are designed to retain backward
compatibility with the previous definition.
A.9 Voltage Input Changes
Although the MCF5407 logic operates at 1.8 V, the device pads are standard
TTL-compatible and therefore can drive a 2.4-V minimum output and accepts a 3.3-V
input. Thus, the MCF5407 requires both 1.8- and 3.3-V power supplies. This specification
differs from the MCF5307, which operates at 3.3 V with 5-V-tolerant I/O pads. Although
the power and ground pin assignment are the same for both the MCF5307 and MCF5407,
the power pin allocation of the MCF5407 is divided between 1.8- and 3.3-V supply levels.
Thus, two power rails are necessary to supply power to the MCF5407.
Note that the MCF5407 meets the EIA/JEDEC standard for 1.8-V power supply voltage
and interface requirements. See the JEDEC standard (EIA/JESD8-7, February 1997).
A.10 PLL Power Supply Filter Circuit
To ensure PLL stability, the power supply to the PLL power pin should be filtered using a
PSTDDATA Value
Table A-13. Version 4 Debug C Processor Status Encodings
0xA
0xB
0xC
0xD
0xE
0x0
0x1
0x2
0x3
0x4
0x5
0x6
0x7
0x8
0x9
0xF
Appendix A. Migrating from the ColdFire MCF5307 to the MCF5407
Continue execution
Begin execution of one instruction
Begin execution of two instructions
Entry into user-mode
Begin execution of PULSE or WDDATA instruction
Begin execution of taken branch
Begin execution of an instruction plus a taken branch
Begin execution of RTE instruction
Begin 1-byte data transfer on PSTDDATA
Begin 2-byte data transfer on PSTDDATA
Begin 3-byte data transfer on PSTDDATA
Begin 4-byte data transfer on PSTDDATA
Exception processing
Breakpoint state change, or entry into emulator mode
Processor is stopped, waiting for interrupt
Processor is halted
Definition
Voltage Input Changes
A-17
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