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AT89C5131A-S3SUM 其他数据使用手册 - Microchip（微芯）
制造商:
Microchip（微芯）
分类:
8位微控制器
封装:
PLCC-52
描述:
AT89C5131 系列 48 MHz 32 KB 闪存 1.25 KB SRAM 8位 微控制器 - PLCC-52
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封装尺寸在P3
型号编码规则在P7
技术参数、封装参数在P2
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AT89C5131A-S3SUM数据手册
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若手册格式错乱，请下载阅览PDF原文件
FE-5131A Page-6
EMULATION RESTRICTIONS
The following restrictions are valid for FE-5131A:
1. FE-5131A Monitor Program shares 1 KByte of the 32K memory code space.
Therefore, only 31K are available for user’s programs while emulating
because the system comes with an embedded monitor program that uses this
1K of the memory space, from 7C00h to 7FFFh.
2. Code memory cannot be mapped external and always belongs to the
emulator system.
3. The program also uses 4 Bytes of the internal stack memory.
4. The stack pointer may not be defined below address 7.
5. The first instruction (address 0000h) must be 3-bytes long. For example: use
LJMP and not SJMP or AJMP as the first instruction.
6. The UART is shared with the system and interrupts should not be disabled.
Also the related timer to the serial port must not be stopped. The Halt
Mechanism in the Options Menu offers other solutions in case you need these
resources in your application.
7. TxD line can be used as Output Port or UART line. It cannot be used as Input
Port.
8. RxD line can be used only as UART line. It cannot be used as generic I/O
Port.
9. Breakpoints cannot be set to the Reset Vector (address 0000h-0002h), Serial
Interrupt (address 0023h-0025h) or to the 1K of the reserved memory space
(address 7C00h-7FFFh). Any other location is allowed, included inside
interrupt service routines.
10. The Simulator can simulate timers only in Timer Mode and while the Gate
control is 0. The simulator may not support specific hardware and real-time
functions. Emulation mode is always recommended.
11. The simulation mode supports only the basic functions of the 8051
microcontrollers. Special registers and functions of some derivatives may be
not supported in the simulation modes. Use the real-time mode for fully
support of dedicated functions.
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