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參數(shù)資料
| 型號： | XA-G49 |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | XA 16-bit microcontroller family 64K FLASH/2K RAM, watchdog, 2 UARTs |
| 中文描述： | 的XA 16位微控制器系列64K的FLASH/2K內存，看門狗，2個UART |
| 文件頁數(shù)： | 18/42頁 |
| 文件大?。?/td> | 299K |
| 代理商： | XA-G49 |
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Philips Semiconductors
Preliminary specification
XA-G49
XA 16-bit microcontroller family
64K Flash/2K RAM, watchdog, 2 UARTs
2000 Apr 03
18
API CALL
PARAMETER
ERASE SPECIAL CELL
Input Parameters:
R0H = 95h
R6 = special cell address
0000h: erase BPSW[7:0]
0001h: erase BPSW[15:8]
0002h: erase BPC[7:0]
0003h: erase BPC[15:8]
0004h: erase status byte
Return Parameters
:
R4L = 00 if pass, non–zero if fail
READ SPECIAL CELL
Input Parameters:
R0H = 96h
R6 = special cell address
0000h: read BPSW[7:0]
0001h: 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-G49 has 3 programmable security lock bits that will provide different levels of protection for the on-chip code and data (see
Table 4).
Table 4.
SECURITY LOCK BITS
1
PROTECTION DESCRIPTION
Level
SB1
SB2
SB3
1
0
0
0
No program security features enabled.
2
1
0
0
Inhibit writing to Flash. Also, MOVC instructions executed from external program memory
are disabled from fetching code bytes from internal memory.
3
1
1
0
Same as level 2, plus program verification is disabled
4
1
1
1
Same as level 3, plus external execution is disabled.
NOTE:
1. Any other combination of the Lock bits is not defined.
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| XAGU-50A | 制造商:Distributed By MCM 功能描述:Agu Fuses 50A, Package of 5 制造商:MCM 功能描述:AGU FUSES 50A 5 PACK |
| XAGU-60A | 制造商:Distributed By MCM 功能描述:Agu Fuses 60A, Package of 5 制造商:MCM 功能描述:AGU FUSES 60A 5 PACK |
| XAGU-80A | 制造商:Distributed By MCM 功能描述:Agu Fuses 80A, Package of 5 制造商:MCM 功能描述:AGU FUSES 80A 5 PACK |
| XA-H3 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:CMOS 16-bit highly integrated microcontroller |
| XA-H4 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Single-chip 16-bit microcontroller |
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