参数资料
型号: ST72141K2B3/XXX
厂商: STMICROELECTRONICS
元件分类: 微控制器/微处理器
英文描述: 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PDIP32
封装: 0.400 INCH, PLASTIC, SDIP-32
文件页数: 2/133页
文件大小: 2615K
代理商: ST72141K2B3/XXX
Obsolete
Product(s)
- Obsolete
Product(s)
ST72141K2
10/133
1.4 REGISTER & MEMORY MAP
As shown in Figure 6, 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 and
8Kbytes of user program memory. The RAM
space includes up to 64 bytes for the stack from
0140h to 017Fh.
The highest address bytes contain the user reset
and interrupt vectors.
Figure 6. Memory Map
Table 3. Interrupt Vector Map
0000h
Program Memory
(8K Bytes)
Interrupt & Reset Vectors
HW Registers
DFFFh
0080h
007Fh
E000h
FFDFh
FFE0h
FFFFh
(see Table 3)
0180h
Reserved
017Fh
Short Addressing
RAM
16-bit Addressing
0100h
013Fh
0080h
00FFh
256 Bytes RAM
RAM
Stack or
16-bit Addressing
0140h
017Fh
RAM
(64 Bytes)
“Zero page”
(64 Bytes)
(128 Bytes)
Vector Address
Description
Remarks
FFE0-FFE1h
FFE2-FFE3h
FFE4-FFE5h
FFE6-FFE7h
FFE8-FFE9h
FFEA-FFEBh
FFEC-FFEDh
FFEE-FFEFh
FFF0-FFF1h
FFF2-FFF3h
FFF4-FFF5h
FFF6-FFF7h
FFF8-FFF9h
FFFA-FFFBh
FFFC-FFFDh
FFFE-FFFFh
Not used
TIMER B interrupt vector
TIMER A interrupt vector
SPI interrupt vector
Motor control interrupt vector (events: E, O)
Motor control interrupt vector (events: C, D)
Motor control interrupt vector (events: R, Z)
External interrupt vector EI1: port B7..0
External interrupt vector EI0: port A7..0
Not used
TRAP (software) interrupt vector
RESET vector
Internal Interrupt
External Interrupt
CPU Interrupt
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