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參數(shù)資料
| 型號： | TSC87C51-25MKMQ |
| 英文描述： | CMOS 0 to 25 MHz Programmable 8-bit Microcontroller |
| 中文描述： | 的CMOS 0到25 MHz的可編程的8位微控制器 |
| 文件頁數(shù)： | 11/22頁 |
| 文件大?。?/td> | 253K |
| 代理商： | TSC87C51-25MKMQ |
11
Rev. E
–
July 03, 2000
P0.0VCC
P1.0–P1.7
P2.0–P2.3
VSS
GND
A0–A7
A8–A11
RST
PSEN
P2.6
P2.7
P3.3
P3.6
EA
P3.7
XTAL1
4 to 6 MHz
CONTROL
SIGNALS*
* See Table 5 for proper value on these inputs
Figure 6 Set–up modes configuration
Programming algorithm
The Improved Quick Pulse algorithm is based on the Quick Pulse algorithm and decreases the number of pulses applied
during byte programming from 25 to 5.
To program the TSC87C51 the following sequence must be exercised:
Step 1: Input the valid address on the address lines.
Step 2: Input the appropriate data on the data lines.
Step 3: Activate the combination of control signals.
Step 4: Raise EA/VPP from VCC to VPP (typical 12.75V).
Step 5: Pulse ALE/PROG 5 times.
Repeat step 1 through 5 changing the address and data for the entire array or until the end of the object file is reached
(see Figure 7).
Verify algorithm
Code array verify must be done after each byte or block of bytes is programmed. In either case, a complete verify of
the programmed array will ensure reliable programming of the TSC87C51.
To verify the TSC87C51 code the following sequence must be exercised :
Step 1: Activate the combination of program signals.
Step 2: Input the valid address on the address lines.
Step 3: Input the appropriate data on the data lines.
Step 4: Activate the combination of control signals.
Repeat step 2 through 4 changing the address and data for the entire array (see Figure 7).
The encryption array cannot be directly verified. Verification of the encryption array is done by observing that the code
array is well encrypted.
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