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| 型號(hào)： | MR80C52TXXX-16SB |
| 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, CQCC44 |
| 文件頁(yè)數(shù)： | 278/431頁(yè) |
| 文件大?。?/td> | 5137K |
| 代理商： | MR80C52TXXX-16SB |
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349
7682C–AUTO–04/08
AT90CAN32/64/128
1.
Power-up sequence:
Apply power between VCC and GND while RESET and SCK are set to “0”. In some sys-
tems, the programmer can not guarantee that SCK is held low during power-up. In this
case, RESET must be given a positive pulse of at least two CPU clock cycles duration
after SCK has been set to “0”.
2.
Wait for at least 20 ms and enable serial programming by sending the Programming
Enable serial instruction to pin MOSI.
3.
The serial programming instructions will not work if the communication is out of syn-
chronization. When in sync. the second byte (0x53), will echo back when issuing the
third byte of the Programming Enable instruction. Whether the echo is correct or not, all
four bytes of the instruction must be transmitted. If the 0x53 did not echo back, give
RESET a positive pulse and issue a new Programming Enable command.
4.
The Flash is programmed one page at a time. The memory page is loaded one byte at
a time by supplying the 7 LSB of the address and data together with the Load Program
Memory Page instruction. To ensure correct loading of the page, the data low byte must
be loaded before data high byte is applied for a given address. The Program Memory
Page is stored by loading the Write Program Memory Page instruction with the 9 MSB
of the address. If polling is not used, the user must wait at least tWD_FLASH before issuing
the next page. (See Table 25-14.) Accessing the serial programming interface before
the Flash write operation completes can result in incorrect programming.
5.
The EEPROM array is programmed one byte at a time by supplying the address and
data together with the appropriate Write instruction. An EEPROM memory location is
first automatically erased before new data is written. If polling is not used, the user must
erased device, no 0xFFs in the data file(s) need to be programmed.
6.
Any memory location can be verified by using the Read instruction which returns the
content at the selected address at serial output MISO.
7.
At the end of the programming session, RESET can be set high to commence normal
operation.
8.
Power-off sequence (if needed):
Set RESET to “1”.
Turn VCC power off.
25.8.1
Data Polling Flash
When a page is being programmed into the Flash, reading an address location within the page
being programmed will give the value 0xFF. At the time the device is ready for a new page, the
programmed value will read correctly. This is used to determine when the next page can be writ-
ten. Note that the entire page is written simultaneously and any address within the page can be
used for polling. Data polling of the Flash will not work for the value 0xFF, so when programming
this value, the user will have to wait for at least tWD_FLASH before programming the next page. As
a chip-erased device contains 0xFF in all locations, programming of addresses that are meant to
25.8.2
Data Polling EEPROM
When a new byte has been written and is being programmed into EEPROM, reading the
address location being programmed will give the value 0xFF. At the time the device is ready for
a new byte, the programmed value will read correctly. This is used to determine when the next
byte can be written. This will not work for the value 0xFF, but the user should have the following
in mind: As a chip-erased device contains 0xFF in all locations, programming of addresses that
are meant to contain 0xFF, can be skipped. This does not apply if the EEPROM is re-pro-
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MD83C154TXXX-L16P883D | 8-BIT, MROM, 16 MHz, MICROCONTROLLER, CDIP40 |
| MD83C154XXX-L16P883D | 8-BIT, MROM, 16 MHz, MICROCONTROLLER, CDIP40 |
| MQ80C32E-16SB | 8-BIT, 16 MHz, MICROCONTROLLER, CQFP44 |
| MS80C51T-16D | 8-BIT, MROM, 16 MHz, MICROCONTROLLER, PQCC44 |
| MR83C154TXXX-12/883D | 8-BIT, MROM, 12 MHz, MICROCONTROLLER, CQCC44 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MR80C86 | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:CMOS 16-Bit Microprocessor |
| MR80C86/B | 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Harris Corporation 功能描述:Microprocessor, 16 Bit, 44 Pin, Ceramic, LCC |
| MR80C86-2 | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:CMOS 16-Bit Microprocessor |
| MR80C86-2/883 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| MR80C86-2/B | 制造商:Intersil Corporation 功能描述:MPU 80C86 16BIT CMOS 8MHZ 44PLCC - Rail/Tube |
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