参数资料
型号: ST7PLUSA2M3
厂商: STMICROELECTRONICS
元件分类: 微控制器/微处理器
英文描述: 8-BIT, FLASH, 8 MHz, MICROCONTROLLER, PDSO8
封装: 0.150 INCH, ROHS COMPLIANT, PLASTIC, SOP-8
文件页数: 44/136页
文件大小: 1705K
代理商: ST7PLUSA2M3
Obsolete
Product(s)
- Obsolete
Product(s)
Obsolete
Product(s)
- Obsolete
Product(s)
ST7LITEUS2, ST7LITEUS5
Register and memory map
3
Register and memory map
As shown in Figure 5, the MCU is capable of addressing 64K bytes of memories and I/O
registers.
The available memory locations consist of 128 bytes of register locations, 128 bytes of RAM
and 1 Kbyte of user program memory. The RAM space includes up to 64 bytes for the stack
from 00C0h to 00FFh.
The highest address bytes contain the user reset and interrupt vectors.
The Flash memory contains two sectors (see Figure 5) mapped in the upper part of the ST7
addressing space so the reset and interrupt vectors are located in Sector 0 (FE00h-FFFFh).
The size of Flash Sector 0 and other device options are configurable by option byte.
Warning:
Memory locations marked as “Reserved” must never be
accessed. Accessing a reserved area can have unpredictable
effects on the device.
Figure 5.
Memory map
1.
2.
See Section 6.2 on page 28 for the description of RCCRHx registers.
3.
See Table 9.
0000h
RAM
Flash Memory
(1 Kbytes)
Interrupt & Reset vectors(3)
HW registers(1)
0080h
007Fh
FFE0h
FFFFh
0100h
00FFh
Short addressing
RAM (zero page)
64-byte stack
00FFh
0080h
00C0h
(128 Bytes)
b
FC00h
FBFFh
Reserved
FFDFh
0.5 Kbytes
SECTOR 1
SECTOR 0
1Kbytes FLASH
FFFFh
FE00h
FDFFh
FC00h
PROGRAM MEMORY
DEE0h
RCCRH0
RCCRL0
DEE1h
RCCRH1
RCCRL1
DEE2h
DEE3h
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