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型號(hào)：	MQ80C52CXXX-12/883:R
廠商：	TEMIC SEMICONDUCTORS
元件分類：	微控制器/微處理器
英文描述：	8-BIT, MROM, 12 MHz, MICROCONTROLLER, CQFP44
文件頁(yè)數(shù)：	835/849頁(yè)
文件大?。?/td>	12530K

32099I–01/2012

AT32UC3L016/32/64

through a dedicated Peripheral Bus address. Some of the general-purpose fuse bits are

reserved for special purposes, and should not be used for other functions:

The BOOTPROT fuses protects the following address space for the Boot Loader:

Table 8-2.

General-purpose Fuses with Special Functions

General-

Purpose fuse

Region lock bits.

External Privileged Fetch Lock. Used to prevent the CPU from

fetching instructions from external memories when in privileged

mode. This bit can only be changed when the security bit is

cleared. The address range corresponding to external

memories is device-specific, and not known to the Flash

Controller. This fuse bit is simply routed out of the CPU or bus

system, the Flash Controller does not treat this fuse in any

special way, except that it can not be altered when the security

If the security bit is set, only an external JTAG or aWire Chip

Erase can clear EPFL. No internal commands can alter EPFL if

the security bit is set.

When the fuse is erased (i.e. "1"), the CPU can execute

instructions fetched from external memories. When the fuse is

programmed (i.e. "0"), instructions can not be executed from

external memories.

This fuse has no effect in devices with no External Memory

Interface (EBI).

Used to select one of eight different bootloader sizes. Pages

included in the bootloader area can not be erased or

programmed except by a JTAG or aWire chip erase.

BOOTPROT can only be changed when the security bit is

If the security bit is set, only an external JTAG or aWire Chip

Erase can clear BOOTPROT, and thereby allow the pages

protected by BOOTPROT to be programmed. No internal

commands can alter BOOTPROT or the pages protected by

BOOTPROT if the security bit is set.

Used to configure secure state and secure state debug

capabilities. Decoded into SSE and SSDE signals as shown in

Table 8-5. Refer to the AVR32 Architecture Manual and the

AVR32UC Technical Reference Manual for more details on

SSE and SSDE.

If programmed (i.e. “0”), the JTAG USER PROTECTION

feature is enabled. If this fuse is programmed some HSB

addresses will be accessible by JTAG access even if the flash

security fuse is programmed. Refer to the JTAG documentation

for more information on this functionality. This bit can only be

changed when the security bit is cleared.

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相關(guān)代理商/技術(shù)參數(shù)	參數(shù)描述
MQ82370-20	制造商:Rochester Electronics LLC 功能描述:- Bulk
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MQ82380-20	制造商:Rochester Electronics LLC 功能描述:- Bulk
MQ82380-20/R	制造商:Rochester Electronics LLC 功能描述:
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