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參數(shù)資料
| 型號： | P89C51RD2HXX |
| 廠商： | NXP Semiconductors N.V. |
| 元件分類： | 8位微控制器 |
| 英文描述： | 80C51 8-bit Flash microcontroller family |
| 中文描述： | 80C51的8位閃存微控制器系列 |
| 文件頁數(shù)： | 54/68頁 |
| 文件大?。?/td> | 404K |
| 代理商： | P89C51RD2HXX |
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Philips Semiconductors
Preliminary data
P89C51RA2/RB2/RC2/RD2xx
80C51 8-bit Flash microcontroller family
8KB/16KB/32KB/64KB ISP/IAP Flash with 512B/512B/512B/1KB RAM
2002 Jul 18
54
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 P89C51RA2/RB2/RC2/RD2xx has three programmable security lock bits that will provide different levels of protection for the
on-chip code and data (see Table 11).
Table 11.
SECURITY LOCK BITS
1
PROTECTION DESCRIPTION
LEVEL
LB1
LB2
LB3
1
0
0
0
MOVC instructions executed from external program memory are disabled from fetching code
bytes from internal memory.
2
1
0
0
Block erase is disabled. Erase or programming of the status byte or boot vector is disabled.
3
1
1
0
Verify of code memory is disabled.
4
1
1
1
External execution is disabled.
NOTE:
1. Security bits are independent of each other. Full-chip erase may be performed regardless of the state of the security bits.
2. Any other combination of lock bits is undefined.
3. Setting LBx doesn’t prevent programming of unprogrammed bits.
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| P89C51UFAA | BUILDERS BOX SET; |
| P89C51UFBB | WIRE CUTTING/STRIPPING PLIERWIRE CUTTING/STRIPPING PLIER; Area, wire size min:0.5mm2; Area, wire size max:6mm2; Capacity, cutting:2.8mm; Stripping Capacity:20AWG |
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相關(guān)代理商/技術(shù)參數(shù) |
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| P89C51UBAA | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:80C51 8-bit microcontroller family 4K/8K/16K/32K Flash |
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| P89C51UBBB | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:80C51 8-bit microcontroller family 4K/8K/16K/32K Flash |
| P89C51UBBB-S | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Bit Microcontroller |
| P89C51UBBB-T | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Bit Microcontroller |
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