參數(shù)資料
型號: 90S1200
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): 41/71頁
文件大小: 1416K
代理商: 90S1200
41
AT90S1200
0838H
AVR
03/02
Figure 31.
Programming the Flash Waveforms
Figure 32.
Programming the Flash Waveforms (Continued)
Reading the Flash
The algorithm for reading the Flash memory is as follows (refer to
Programming the
Flash
for details on command and address loading):
1.
A: Load Command
0000 0010
.
2.
B: Load Address High Byte ($00 - $01).
3.
C: Load Address Low Byte ($00 - $FF).
4.
Set OE to
0
, and BS to
0
. The Flash word low byte can now be read at DATA.
5.
Set BS to
1
. The Flash word high byte can now be read from DATA.
6.
Set OE to
1
.
$10
ADDR. HIGH
ADDR.LOW
DATA LOW
DATA
XA1
XA0
BS
XTAL1
WR
RDY/BSY
RESET
OE
12V
DATA HIGH
DATA
XA1
XA0
BS
XTAL1
WR
RDY/BSY
RESET
+12V
OE
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