ST72631K4 查看數據表（PDF） - STMicroelectronics
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ST72631K4
STMicroelectronics
ST72631K4 Datasheet PDF : 109 Pages
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ST7263
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.
Figure 5. Memory Map
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
0000h
003Fh
0040h
023Fh
0240h
HW Registers
(see Table 4
256 Bytes RAM*
512 Bytes RAM*
0040h
00FFh
0100h
013Fh
Short Addressing
RAM (192 Bytes)
Stack (64 Bytes)
Reserved
BFFFh
C000h
Program Memory*
E000h
16K Bytes
8K Bytes
F000h
4K Bytes
FFEFh
FFF0h
Interrupt & Reset Vectors
(see Table 3 on page 10)
FFFFh
0040h
00FFh
0100h
013Fh
0140h
Short Addressing
RAM (192 Bytes)
Stack (64 Bytes)
16-bit Addressing RAM
023Fh
(256 Bytes)
* Program memory and RAM sizes are product dependent (see Table 1 Device Summary)
Table 3. Interrupt Vector Map
Vector Address
Description
Masked by
FFF0-FFF1h
USB Interrupt Vector
I- bit
FFF2-FFF3h
SCI Interrupt Vector*
I- bit
FFF4-FFF5h
I2C Interrupt Vector*
I- bit
FFF6-FFF7h
TIMER Interrupt Vector
I- bit
FFF8-FFF9h
IT1 to IT8 Interrupt Vector
I- bit
FFFA-FFFBh
FFFC-FFFDh
FFFE-FFFFh
USB End Suspend Mode Interrupt Vector
TRAP (software) Interrupt Vector
RESET Vector
I- bit
none
none
Remarks
Exit from Halt Mode
Internal Interrupt
No
Internal Interrupt
No
Internal Interrupt
No
Internal Interrupt
No
External Interrupts
Yes
Internal Interrupt
Yes
CPU Interrupt
No
Yes
* If the peripheral is present on the device (see Table 1 Device Summary)
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