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ST7F15BY1M3TR Fiches technique(PDF) 9 Page - STMicroelectronics |
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ST7F15BY1M3TR Fiches technique(HTML) 9 Page - STMicroelectronics |
9 / 159 page ST7LITE1xB 9/159 3 REGISTER & MEMORY MAP As shown in Figure 5, the MCU is capable of ad- dressing 64K bytes of memories and I/O registers. The available memory locations consist of 128 bytes of register locations, 256 bytes of RAM, 128 bytes of data EEPROM and up to 4 Kbytes of flash program memory. The RAM space includes up to 128 bytes for the stack from 180h to 1FFh. The highest address bytes contain the user reset and interrupt vectors. The Flash memory contains two sectors (see Fig- ure 5) mapped in the upper part of the ST7 ad- dressing space so the reset and interrupt vectors are located in Sector 0 (F000h-FFFFh). The size of Flash Sector 0 and other device op- tions are configurable by Option byte (refer to sec- tion 15.1 on page 149). IMPORTANT: Memory locations marked as “Re- served” must never be accessed. Accessing a re- served area can have unpredictable effects on the device. Figure 5. Memory Map 0000h RAM Flash Memory (2K or 4K) Interrupt & Reset Vectors HW Registers 0080h 007Fh 0FFFh (see Table 2) 1000h 107Fh FFE0h FFFFh (see Table 5) 0180h Reserved 017Fh Short Addressing RAM (zero page) 0080h 00FFh (128 Bytes) Data EEPROM (128 Bytes) F000h 1080h EFFFh Reserved FFDFh 128 Bytes Stack 0100h 017Fh 1 Kbyte 3 Kbytes (SECTOR 1) (SECTOR 0) 4K FLASH FFFFh FC00h FBFFh F000h PROGRAM MEMORY DEE0h RCCRH1 RCCRL1 see section 7.1 on page 23 00FFh 01FFh 0100h Reserved RAM (128 Bytes) Reserved 0200h 0180h 01FFh DEE1h DEE2h RCCRH0 RCCRL0 DEE3h 1 Kbyte 1 Kbyte (SECTOR 1) (SECTOR 0) 2K FLASH FFFFh FC00h FBFFh F800h PROGRAM MEMORY 1 |
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