參數(shù)資料
型號: MQ80C52XXX-36/883
廠商: ATMEL CORP
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, 36 MHz, MICROCONTROLLER, CQFP44
封裝: CERAMIC, QFP-44
文件頁數(shù): 89/152頁
文件大?。?/td> 2528K
代理商: MQ80C52XXX-36/883
293
8021G–AVR–03/11
ATmega329P/3290P
Note:
Note:
1. Z0: should be zero for all SPM commands, byte select for the LPM instruction. See ”Addressing the Flash During Self-Pro-
gramming” on page 286 for details about the use of Z-pointer during Self-Programming.
Table 26-7.
Read-While-Write Limit (ATmega329P/3290P)(1)
Section
Pages
Address
Read-While-Write section (RWW)
224
0x0000 - 0x37FF
No Read-While-Write section (NRWW)
32
0x3800 - 0x3FFF
Table 26-8.
Explanation of different variables used in Figure 26-3 and the mapping to the Z-pointer
(ATmega329P/3290P)(1)
Variable
Corresponding
Z-value
Description
PCMSB
13
Most significant bit in the Program Counter. (Program Counter is 14 bits
PC[13:0])
PAGEMSB
5
Most significant bit which is used to address the words within one page
(64 words in a page requires six/seven bits PC [5:0]).
ZPCMSB
Z14
Bit in Z-register that is mapped to PCMSB. Because Z0 is not used, the
ZPCMSB equals PCMSB + 1.
ZPAGEMSB
Z6
Bit in Z-register that is mapped to PCMSB. Because Z0 is not used, the
ZPAGEMSB equals PAGEMSB + 1.
PCPAGE
PC[13:6]
Z14:Z7
Program Counter page address: Page select, for Page Erase and Page
Write
PCWORD
PC[5:0]
Z6:Z1
Program Counter word address: Word select, for filling temporary buffer
(must be zero during Page Write operation)
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