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參數(shù)資料
| 型號(hào)： | MPG5374X |
| 元件分類： | LED |
| 英文描述： | T-1 3/4 SINGLE COLOR LED, GREEN, 5 mm |
| 封裝： | ROHS COMPLIANT PACKAGE-2 |
| 文件頁數(shù)： | 5/32頁 |
| 文件大?。?/td> | 413K |
| 代理商： | MPG5374X |
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13
XMEGA C3 [DATASHEET]
8361D–AVR–07/2013
7.3.4
Production Signature Row
The production signature row is a separate memory section for factory programmed data. It contains calibration data for
functions such as oscillators and analog modules. Some of the calibration values will be automatically loaded to the
corresponding module or peripheral unit during reset. Other values must be loaded from the signature row and written to
the corresponding peripheral registers from software. For details on calibration conditions, refer to “Electrical
The production signature row also contains an ID that identifies each microcontroller device type and a serial number for
each manufactured device. The serial number consists of the production lot number, wafer number, and wafer
coordinates for the device. The device ID for the available devices is shown in Table 7-1.
The production signature row cannot be written or erased, but it can be read from application software and external
programmers.
Table 7-1.
Device ID bytes.
7.3.5
User Signature Row
The user signature row is a separate memory section that is fully accessible (read and write) from application software
and external programmers. It is one flash page in size, and is meant for static user parameter storage, such as calibration
data, custom serial number, identification numbers, random number seeds, etc. This section is not erased by chip erase
commands that erase the flash, and requires a dedicated erase command. This ensures parameter storage during
multiple program/erase operations and on-chip debug sessions.
7.4
Fuses and Lock bits
The fuses are used to configure important system functions, and can only be written from an external programmer. The
application software can read the fuses. The fuses are used to configure reset sources such as brownout detector and
watchdog, and startup configuration.
The lock bits are used to set protection levels for the different flash sections (that is, if read and/or write access should be
blocked). Lock bits can be written by external programmers and application software, but only to stricter protection levels.
Chip erase is the only way to erase the lock bits. To ensure that flash contents are protected even during chip erase, the
lock bits are erased after the rest of the flash memory has been erased.
An unprogrammed fuse or lock bit will have the value one, while a programmed fuse or lock bit will have the value zero.
Both fuses and lock bits are reprogrammable like the flash program memory.
7.5
Data Memory
The data memory contains the I/O memory, internal SRAM, optionally memory mapped EEPROM, and external memory
if available. The data memory is organized as one continuous memory section, see Figure 7-2 on page 14. To simplify
development, I/O Memory, EEPROM and SRAM will always have the same start addresses for all Atmel AVR XMEGA
devices.
Device
Device ID bytes
Byte 2
Byte 1
Byte 0
ATxmega384C3
45
98
1E
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| MPN-7430 | 300 V, SILICON, PIN DIODE |
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| MPS101A | SLIDE SWITCH, SP3T, LATCHED, 0.3A, 30VDC, THROUGH HOLE-RIGHT ANGLE |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MPG5379K | 制造商:Stanley Electric Co 功能描述:LED Uni-Color Green 560nm 2-Pin Bulk 制造商:The Stanley Works 功能描述:Green 2.5 x 5 mm 24 x 18 Min 12 mcd Typical 24 mcd Diffused Through Hole LED 制造商:STANLEY 功能描述:Green 2.5 x 5 mm 24 ? x 18 ? Min 12 mcd Typical 24 mcd Diffused Through Hole LED 制造商:Stanley Electric Co 功能描述:Green 2.5 x 5 mm 24 ? x 18 ? Min 12 mcd Typical 24 mcd Diffused Through Hole LED |
| MPG5763X | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Optoelectronic |
| MPG5764X | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Optoelectronic |
| MPG5773X | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Optoelectronic |
| MPG5774X | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Optoelectronic |
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