參數(shù)資料
型號： PXAG49
廠商： NXP Semiconductors N.V.
英文描述： XA 16-bit microcontroller family(XA16位微控制器系列)
中文描述： 的XA 16位微控制器系列（XA16位微控制器系列）
文件頁數(shù)： 18/43頁
文件大?。?/td> 220K
代理商： PXAG49
Philips Semiconductors
Preliminary specification
XA-G49
XA 16-bit microcontroller family
64K Flash/2K RAM, watchdog, 2 UARTs
2000 Jun 21
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
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
READ SPECIAL CELL
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 3).
Table 3.
SECURITY LOCK BITS
1
PROTECTION DESCRIPTION
Level
SB1
SB2
SB3
1
0
0
0
No program security features enabled.
2
1
0
0
Same as level 1, plus block erase is disabled. Erase or programming of the status byte or
boot vector is disabled.
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.
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.
相關(guān)PDF資料
PDF描述
PXAS33KBBE XA 16-bit microcontroller 32 K/1 K OTP/ROM/ROMless, 8-channel 8-bit A/D, low voltage 2.7 V.5.5 V, I2C, 2 UARTs, 16 MB address range
PXAS30 XA 16-bit microcontroller 32 K/1 K OTP/ROM/ROMless, 8-channel 8-bit A/D, low voltage 2.7 V.5.5 V, I2C, 2 UARTs, 16 MB address range
PXAS33KBA XA 16-bit microcontroller 32 K/1 K OTP/ROM/ROMless, 8-channel 8-bit A/D, low voltage 2.7 V.5.5 V, I2C, 2 UARTs, 16 MB address range
PXAS30KFBE XA 16-bit microcontroller 32 K/1 K OTP/ROM/ROMless, 8-channel 8-bit A/D, low voltage 2.7 V.5.5 V, I2C, 2 UARTs, 16 MB address range
PXAS33KFA XA 16-bit microcontroller 32 K/1 K OTP/ROM/ROMless, 8-channel 8-bit A/D, low voltage 2.7 V.5.5 V, I2C, 2 UARTs, 16 MB address range
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
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