性名：黃順宏
資工二2
1410832062
1.請描述AT89S52微處理器(MCU)以下資訊：
(a)請描述ATS8952內建資料記憶體(RAM)大小以及各分成那幾區(位址範圍)
(b)請描述ATS8952內建程式記憶體(ROM)大小以及各分成那幾區(位址範圍)
1. Please describe the following information of AT89S52 microprocessor (MCU):
(a) Please describe the size of ATS8952's built-in data memory (RAM) and the divisions
(address range)
(b) Please describe the size of ATS8952's built-in program memory (ROM) and the
divisions (address range)
answer:
a.The Size of RAM : has 256 Bytes of internal RAM.
b.The Size of ROM : 8KB on chip and it can be extended upto 64KB using the external
device (eg : EEPROM)
2. 請描述實驗板石英振盪器幾MHz?
2. Please describe how many MHz of the experimental board quartz oscillator?
answer :
Typical crystal oscillators can range in oscillation frequencies from about 40kHz to well
over 100MHz depending upon their circuit configuration and the amplifying device used.
3 請問實驗板 MCS-8051 MCU 特殊暫存器(sfr) , P0，P1, P2，P3在記憶體哪一位址?
3 What address are the special registers (sfr), P0, P1, P2, and P3 of the experiment
board MCS-8051 MCU in the memory?
answer:
The 8051 Microcontroller four Ports which can be used as Input and/or Output. These
four ports are P0, P1, P2 and P3. Each Port has a corresponding register with same
names (the Port Registers are also P0, P1, P2 and P3). The addresses of the Port
Registers are as follows: P0 – 80H, P1 – 90H, P2 – A0H and P2 – B0H.
Each bit in these SFRs corresponds to one physical Pin in the 8051 Microcontroller. All
these Port Registers are both Bit Addressable and Byte Addressable. Writing 1 or 0 on a
Port Register Bit will reflect as an appropriate voltage (5V and 0V) on the corresponding
Pin.
4. 請問ATS8952 位元定址區在RAM的哪一範圍? 有何功用?
4. What is the RAM range of the ATS8952 bit addressing area? What is its function?
