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Users Manual TOPAS900 Flash V2.1
HWU Elektronik Oberhausen Page 31
5.1.2. Internal Mapping in different Modes
Figure 11 : Internal Mapping in Single Boot and Single Chop Mode
5.1.3. Programming in Single Boot Mode
The TMP95FY64 flash controller comprises 256 Kbytes of internal (on-chip) flash
memory. For first-time programming of this memory a small portion of internal program
located in an internal Boot-ROM area has to be activated. This is done by resetting the
controller and restarting it by holding the /BOOT line initially to Low. The controller then
runs in SINGLE BOOT mode (see also controller manual) executing a program from
Boot-ROM for programming the internal flash from a serial line. For this programming
action the internal flash is switched to addresses from off 10000h (see fig. 5/6).
Handling of the /BOOT line and programming from PC is managed by a small
additionally implemented 8-bit controller TMP87P808.