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Motor de Búsqueda de Datasheet de Componentes Electrónicos |
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Motor de Búsqueda de Datasheet de Componentes Electrónicos |
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ST7SB20J/EU Datasheet(PDF) 11 Page - STMicroelectronics |
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ST7SB20J/EU Datasheet(HTML) 11 Page - STMicroelectronics |
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11 / 154 page  ST7232A 11/154 3 REGISTER & MEMORY MAP As shown in Figure 4, 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, up to 384 bytes of RAM and up to 8 Kbytes of user program memory. The RAM space includes up to 256 bytes for the stack from 0100h to 01FFh. The highest address bytes contain the user reset and interrupt vectors. IMPORTANT: Memory locations marked as “Re- served” must never be accessed. Accessing a re- seved area can have unpredictable effects on the device. Figure 4. Memory Map 0000h RAM Program Memory ( 8K) Interrupt & Reset Vectors HW Registers 0080h 007Fh (see Table 2) E000h FFDFh FFE0h FFFFh (see Table 8) 0480h Reserved 047Fh Short Addressing RAM (zero page) 256 Bytes Stack Reserved 0100h 01FFh 027Fh 0080h 0200h 00FFh or 047Fh (384 Bytes) 1 |
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