- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄24814 > 935267813551 (NXP SEMICONDUCTORS) 8-BIT, FLASH, 33 MHz, MICROCONTROLLER, PQFP44 PDF資料下載
參數(shù)資料
| 型號： | 935267813551 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 8-BIT, FLASH, 33 MHz, MICROCONTROLLER, PQFP44 |
| 封裝： | PLASTIC, QFP-44 |
| 文件頁數(shù)： | 43/52頁 |
| 文件大?。?/td> | 288K |
| 代理商： | 935267813551 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁當(dāng)前第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁
Philips Semiconductors
Preliminary data
P89C51RB2/P89C51RC2/
P89C51RD2
80C51 8-bit Flash microcontroller family
16KB/32KB/64KB ISP/IAP Flash with 512B/512B/1KB RAM
2001 Jun 27
48
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 P89C51RB2/RC2/RD2 has three programmable security lock bits that will provide different levels of protection for the on-chip
code and data (see Table 10).
Table 10.
SECURITY LOCK BITS1
PROTECTION DESCRIPTION
LEVEL
LB1
LB2
LB3
PROTECTION DESCRIPTION
1
0
MOVC instructions executed from external program memory are disabled from fetching code
bytes from internal memory.
2
1
0
Block erase is disabled. Erase or programming of the status byte or boot vector is disabled.
3
1
0
Verify of code memory is disabled.
4
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.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| 935267811551 | 8-BIT, FLASH, 33 MHz, MICROCONTROLLER, PQFP44 |
| 935265437112 | 8-BIT, FLASH, 33 MHz, MICROCONTROLLER, PDIP40 |
| 935265441112 | 8-BIT, FLASH, 33 MHz, MICROCONTROLLER, PQCC44 |
| 935267812557 | 8-BIT, FLASH, 33 MHz, MICROCONTROLLER, PQFP44 |
| 935265429512 | 8-BIT, FLASH, 33 MHz, MICROCONTROLLER, PQCC44 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 935268081112 | 制造商:NXP Semiconductors 功能描述:SUB ONLY IC |
| 935268721125 | 制造商:NXP Semiconductors 功能描述:Buffer/Line Driver 1-CH Non-Inverting 3-ST CMOS 5-Pin TSSOP T/R |
| 935269304128 | 制造商:ST-Ericsson 功能描述:IC AUDIO CODEC W/TCH SCRN 48LQFP |
| 935269544557 | 制造商:NXP Semiconductors 功能描述:SUB ONLY TDA9587-2US1-V1.3 |
| 935269987557 | 制造商:NXP Semiconductors 功能描述:SUB ONLY TDA9587-1US1-V1.8 SUBBED TO 935269987557 |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。