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型號：	S80C52XXX-16R
廠商：	TEMIC SEMICONDUCTORS
元件分類：	微控制器/微處理器
英文描述：	8-BIT, MROM, 16 MHz, MICROCONTROLLER, PQCC44
文件頁數(shù)：	66/1021頁
文件大?。?/td>	15196K
代理商：	S80C52XXX-16R

32072H–AVR32–10/2012

AT32UC3A3

To erase or write a general-purpose fuse bit, the commands Write General-Purpose Fuse Bit

(WGPB) and Erase General-Purpose Fuse Bit (EGPB) are provided. Writing one of these com-

mands, together with the number of the fuse to write/erase, performs the desired operation.

An entire General-Purpose Fuse byte can be written at a time by using the Program GP Fuse

Byte (PGPFB) instruction. A PGPFB to GP fuse byte 2 is not allowed if the flash is locked by the

security bit. The PFB command is issued with a parameter in the PAGEN field:

PAGEN[2:0] - byte to write

PAGEN[10:3] - Fuse value to write

All General-Purpose fuses can be erased by the Erase All General-Purpose fuses (EAGP) com-

mand. An EAGP command is not allowed if the flash is locked by the security bit.

Two errors can be detected in the FSR register after issuing these commands:

Programming Error: A bad keyword and/or an invalid command have been written in the

FCMD register.

Lock Error: A write or erase of any of the special-function fuse bits in Table 12-3 was

attempted while the flash is locked by the security bit.

The lock bits are implemented using the lowest 16 general-purpose fuse bits. This means that

the 16 lowest general-purpose fuse bits can also be written/erased using the commands for

locking/unlocking regions, see Section 12.5.3.

Security bit

The security bit allows the entire chip to be locked from external JTAG or other debug access for

code security. The security bit can be written by a dedicated command, Set Security Bit (SSB).

Once set, the only way to clear the security bit is through the JTAG Chip Erase command.

Once the Security bit is set, the following Flash controller commands will be unavailable and

return a lock error if attempted:

Write General-Purpose Fuse Bit (WGPB) to BOOTPROT or EPFL fuses

Erase General-Purpose Fuse Bit (EGPB) to BOOTPROT or EPFL fuses

Program General-Purpose Fuse Byte (PGPFB) of fuse byte 2

Erase All General-Purpose Fuses (EAGPF)

One error can be detected in the FSR register after issuing the command:

Programming Error: A bad keyword and/or an invalid command have been written in the

FCMD register.

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S80C32-40SHXXX:RD	8-BIT, 40 MHz, MICROCONTROLLER, PQCC44
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相關(guān)代理商/技術(shù)參數(shù)	參數(shù)描述
S80C54	制造商:INTEL 制造商全稱:Intel Corporation 功能描述:CHMOS SINGLE-CHIP 8-BIT MICROCONTROLLER
S80C54-1	制造商:INTEL 制造商全稱:Intel Corporation 功能描述:CHMOS SINGLE-CHIP 8-BIT MICROCONTROLLER
S80C54-2	制造商:INTEL 制造商全稱:Intel Corporation 功能描述:CHMOS SINGLE-CHIP 8-BIT MICROCONTROLLER
S80C54-20	制造商:未知廠家制造商全稱:未知廠家功能描述:8-Bit Microcontroller
S80C54-24	制造商:INTEL 制造商全稱:Intel Corporation 功能描述:CHMOS SINGLE-CHIP 8-BIT MICROCONTROLLER

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