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ST72633 Datasheet(PDF) 10 Page - STMicroelectronics |
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ST72633 Datasheet(HTML) 10 Page - STMicroelectronics |
10 / 109 page ST7263 10/109 1.4 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 192 bytes of register location, up to 512 bytes of RAM and up to 16K bytes of user program memory. The RAM space includes up to 64 bytes for the stack from 0100h to 013Fh. The highest address bytes contain the user reset and interrupt vectors. IMPORTANT: Memory locations noted “Re- served” must never be accessed. Accessing a re- served area can have unpredictable effects on the device Figure 5. Memory Map * Program memory and RAM sizes are product dependent (see Table 1 Device Summary) Table 3. Interrupt Vector Map * If the peripheral is present on the device (see Table 1 Device Summary) Vector Address Description Masked by Remarks Exit from Halt Mode FFF0-FFF1h FFF2-FFF3h FFF4-FFF5h FFF6-FFF7h FFF8-FFF9h FFFA-FFFBh FFFC-FFFDh FFFE-FFFFh USB Interrupt Vector SCI Interrupt Vector* I2C Interrupt Vector* TIMER Interrupt Vector IT1 to IT8 Interrupt Vector USB End Suspend Mode Interrupt Vector TRAP (software) Interrupt Vector RESET Vector I- bit I- bit I- bit I- bit I- bit I- bit none none Internal Interrupt Internal Interrupt Internal Interrupt Internal Interrupt External Interrupts Internal Interrupt CPU Interrupt No No No No Yes Yes No Yes 0000h Interrupt & Reset Vectors HW Registers 0040h 003Fh (see Table 4 FFEFh FFF0h FFFFh (see Table 3 on page 10) C000h BFFFh F000h Program Memory* 512 Bytes RAM* 8K Bytes 4K Bytes E000h Short Addressing Stack (64 Bytes) 0100h 0040h 00FFh 013Fh Reserved 0240h 023Fh RAM (192 Bytes) 16K Bytes 256 Bytes RAM* Short Addressing Stack (64 Bytes) 0100h 0140h 023Fh 0040h 00FFh 013Fh 16-bit Addressing RAM RAM (192 Bytes) (256 Bytes) |
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