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參數(shù)資料
| 型號： | IT80C52XXX-16SHXXX |
| 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, PQFP44 |
| 文件頁數(shù)： | 44/81頁 |
| 文件大?。?/td> | 663K |
| 代理商： | IT80C52XXX-16SHXXX |
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49
ATtiny28L/V
1062F–AVR–07/06
Chip Erase
The Chip Erase command will erase the Flash memory and the Lock bits. The Lock bits
are not reset until the Flash has been completely erased. The Fuse bits are not
changed. Chip Erase must be performed before the Flash is reprogrammed.
Load Command “Chip Erase”
1.
Set XA1, XA0 to “10”. This enables command loading.
2.
Set BS to “0”.
3.
Set DATA to “1000 0000”. This is the command for Chip Erase.
4.
Give XTAL1 a positive pulse. This loads the command.
5.
Give WR a negative pulse. This starts the Chip Erase. RDY/BSY goes low.
6.
Wait until RDY/BSY goes high before loading a new command.
Programming the Flash
A: Load Command “Write Flash”
1.
Set XA1, XA0 to “10”. This enables command loading.
2.
Set BS to “0”.
3.
Set DATA to “0001 0000”. This is the command for Write Flash.
4.
Give XTAL1 a positive pulse. This loads the command.
B: Load Address High Byte
1.
Set XA1, XA0 to “00”. This enables address loading.
2.
Set BS to “1”. This selects high byte.
3.
Set DATA = Address high byte ($00 - $03).
4.
Give XTAL1 a positive pulse. This loads the address high byte.
C: Load Address Low Byte
1.
Set XA1, XA0 to “00”. This enables address loading.
2.
Set BS to “0”. This selects low byte.
3.
Set DATA = Address low byte ($00 - $FF).
4.
Give XTAL1 a positive pulse. This loads the address low byte.
D: Load Data Low Byte
1.
Set XA1, XA0 to “01”. This enables data loading.
2.
Set DATA = Data low byte ($00 - $FF).
3.
Give XTAL1 a positive pulse. This loads the data low byte.
E: Write Data Low Byte
1.
Set BS to “0”. This selects low data.
2.
Give WR a negative pulse. This starts programming of the data byte. RDY/BSY
goes low.
3.
Wait until RDY/BSY goes high to program the next byte.
(See Figure 38 for signal waveforms.)
F: Load Data High Byte
1.
Set XA1, XA0 to “01”. This enables data loading.
2.
Set DATA = Data high byte ($00 - $FF).
3.
Give XTAL1 a positive pulse. This loads the data high byte.
G: Write Data High Byte
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相關(guān)代理商/技術(shù)參數(shù) |
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|---|---|
| IT80F | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:TRIAC|50V V(DRM)|8A I(T)RMS|TO-220 |
| IT80G | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:TRIAC|50V V(DRM)|8A I(T)RMS|TO-220 |
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