參數(shù)資料
型號(hào): ATmega8535
廠商: Atmel Corp.
元件分類: 8位微控制器
英文描述: -bit AVR Microcontroller with 8K Bytes In- System Programmable Flash
中文描述: 位AVR微控制器具有8K字節(jié)的系統(tǒng)內(nèi)可編程閃存
文件頁數(shù): 104/152頁
文件大小: 2528K
代理商: ATMEGA8535
306
8021G–AVR–03/11
ATmega329P/3290P
27.7.5
Programming the EEPROM
The EEPROM is organized in pages, see Table 27-14 on page 301. When programming the
EEPROM, the program data is latched into a page buffer. This allows one page of data to be
programmed simultaneously. The programming algorithm for the EEPROM data memory is as
follows (refer to ”Programming the Flash” on page 303 for details on Command, Address and
Data loading):
1.
A: Load Command “0001 0001”.
2.
G: Load Address High Byte (0x00 - 0xFF).
3.
B: Load Address Low Byte (0x00 - 0xFF).
4.
C: Load Data (0x00 - 0xFF).
5.
E: Latch data (give PAGEL a positive pulse).
K: Repeat 3 through 5 until the entire buffer is filled.
L: Program EEPROM page
1.
Set BS1 to “0”.
2.
Give WR a negative pulse. This starts programming of the EEPROM page. RDY/BSY
goes low.
3.
Wait until to RDY/BSY goes high before programming the next page (See Figure 27-4 for
signal waveforms).
Figure 27-4. Programming the EEPROM Waveforms
27.7.6
Reading the Flash
The algorithm for reading the Flash memory is as follows (refer to ”Programming the Flash” on
page 303 for details on Command and Address loading):
1.
A: Load Command “0000 0010”.
2.
G: Load Address High Byte (0x00 - 0xFF).
3.
B: Load Address Low Byte (0x00 - 0xFF).
4.
Set OE to “0”, and BS1 to “0”. The Flash word low byte can now be read at DATA.
5.
Set BS1 to “1”. The Flash word high byte can now be read at DATA.
6.
Set OE to “1”.
RDY/BSY
WR
OE
RESET +12V
PAGEL
BS2
0x11
ADDR. HIGH
DATA
ADDR. LOW
DATA
ADDR. LOW
DATA
XX
XA1
XA0
BS1
XTAL1
XX
AG
B
C
E
B
C
E
L
K
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ATMEGA8535-16AUR 功能描述:8位微控制器 -MCU AVR 8K FLSH 544B SRAM 512B EE-16MHz RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT