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C505_9708 Datasheet(PDF) 45 Page - Siemens Semiconductor Group |
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C505_9708 Datasheet(HTML) 45 Page - Siemens Semiconductor Group |
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45 / 227 page  Semiconductor Group 4-5 1997-08-01 External Bus Interface C505 / C505C 4.5 Enhanced Hooks Emulation Concept The Enhanced Hooks Emulation Concept of the C500 microcontroller family is a new, innovative way to control the execution of C500 MCUs and to gain extensive information on the internal operation of the controllers. Emulation of on-chip ROM based programs is possible, too. Each C500 production chip has built-in logic for the support of the Enhanced Hooks Emulation Concept. Therefore, no costly bond-out chips are necessary for emulation. This also ensure that emulation and production chips are identical. The Enhanced Hooks TechnologyTM1), which requires embedded logic in the C500 allows the C500 together with an EH-IC to function similar to a bond-out chip. This simplifies the design and reduces costs of an ICE-system. ICE-systems using an EH-IC and a compatible C500 are able to emulate all operating modes of the different versions of the C500 microcontrollers. This includes emulation of ROM, ROM with code rollover and ROMless modes of operation. It is also able to operate in single step mode and to read the SFRs after a break. Figure 4-2 Basic C500 MCU Enhanced Hooks Concept Configuration Port 0, port 2 and some of the control lines of the C500 based MCU are used by Enhanced Hooks Emulation Concept to control the operation of the device during emulation and to transfer informations about the program execution and data transfer between the external emulation hardware (ICE-system) and the C500 MCU. 1) “Enhanced Hooks Technology” is a trademark and patent of MetaLink Corporation licenced to Siemens. MCS02647 SYSCON PCON TCON RESET EA PSEN ALE Port 0 Port 2 I/O Ports Optional Port 3 Port 1 C500 MCU Interface Circuit Enhanced Hooks RPort 0 RPort 2 RTCON RPCON RSYSCON TEA TALE TPSEN EH-IC Target System Interface ICE-System Interface to Emulation Hardware |
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