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參數(shù)資料
| 型號： | MX10EXAUI |
| 廠商： | MACRONIX INTERNATIONAL CO LTD |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 16-BIT, FLASH, 30 MHz, MICROCONTROLLER, PQFP44 |
| 封裝： | 10 X 10 MM, 1.40 MM HEIGHT, PLASTIC, MS-026, LQFP-44 |
| 文件頁數(shù)： | 14/55頁 |
| 文件大小： | 476K |
| 代理商： | MX10EXAUI |
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P/N:PM0625 Specifications subject to change without notice, contact your sales representatives for the most update information. REV. 1.0, JUL. 01, 2005
MX10EXA
API CALL
PARAMETER
READ SPECIAL CELL
Input Parameters:
R0H
= 96h
R6
= special cell address
0000h: read BPSW[7:0]
000lh: read BPSW[15:8]
0002h: read BPC[7:0]
0003h: read BPC[15:8]
0004h: read status byte
0006h: read manufacturer ID
0007h: read device ID #1
0008h: read device ID #2
000Ah: read security bit #1
000Ch: read security bit #2
000Eh: read security bit #3
Return Parameters:
R4L
= value of byte read
Security
The security feature protects against software piracy and prevents the contents of the Flash from being read. The
Security Lock bits are located in Flash. The XA has 3 programmable security lock bits that will provide different levels
of protection for the on-chip code and data
(see Table 3).
Table 3.
SECURITY LOCK BITS1
PROTECTIONDESCRIPTION
Level
SB1
SB2
SB3
1
0
No program security features enabled
2
1
0
Same as level 1, plus block erase is disabled. Erase or
programming of the status byte or boot vector is disabled.
3
1
0
Same as level 2, plus program verification is disabled
4
1
Same as level 3, plus external execution is disabled.
NOTE:
1. Any other combination of the Lock bits is not defined.
2. Security bits are independent of each other. Full-chip erase may be performed regardless of the states of the
security bits.
3. Setting LB doesn't prevent programming of unprogrammed bits.
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