參數(shù)資料
型號(hào)： ST7263BK1B/XXX
廠商： STMICROELECTRONICS
元件分類： 微控制器/微處理器
英文描述： 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PDIP32
封裝： 0.400 INCH, LEAD FREE, SHRINK, PLASTIC, DIP-32
文件頁數(shù)： 13/140頁
文件大?。?/td> 1423K
代理商： ST7263BK1B/XXX
ST7263B
11/140
3 REGISTER & MEMORY MAP
As shown in Figure 6, the MCU is capable of ad-
dressing 32 Kbytes of memories and I/O registers.
The available memory locations consist of up to
1024 bytes of RAM including 64 bytes of register
locations, and up to 32K bytes of user program
memory in which the upper 32 bytes are reserved
for interrupt vectors. The RAM space includes up
to 128 bytes for the stack from 0100h to 017Fh.
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 6. Memory Map
Table 4. Interrupt Vector Map
Vector Address
Description
Masked by
Remarks
Exit from Halt Mode
FFE0h-FFEDh
FFEEh-FFEFh
FFF0h-FFF1h
FFF2h-FFF3h
FFF4h-FFF5h
FFF6h-FFF7h
FFF8h-FFF9h
FFFAh-FFFBh
FFFCh-FFFDh
FFFEh-FFFFh
Reserved Area
USB Interrupt Vector
SCI Interrupt Vector
IC Interrupt Vector
TIMER Interrupt Vector
IT1 to IT8 Interrupt Vector
USB End Suspend Mode Interrupt Vector
Flash Start Programming Interrupt Vector
TRAP (software) Interrupt Vector
RESET Vector
I- bit
None
Internal Interrupt
External Interrupt
External Interrupts
Internal Interrupt
CPU Interrupt
No
Yes
No
Yes
0000h
RAM
Program Memory
(4 / 8 / 16 / 32 KBytes)
Interrupt & Reset Vectors
HW Registers
0040h
003Fh
FFDFh
FFE0h
FFFFh
Reserved
Stack
(128 Bytes)
0100h
017Fh
01C0 / 0240 / 0440h
00FFh
0040h
0180h
01BF / 023F / 043Fh
Short Addressing
RAM (192 bytes)
16-bit Addressing
RAM
8000h
7FFFh
(See Table 5)
(See Table 4)
(384 / 512 / 1024 Bytes)
8000h
FFDFh
F000h
E000h
C000h
32 KBytes
16 KBytes
8 KBytes
4 KBytes
01BF / 023F / 043Fh
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