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AN2635

更新时间: 2022-04-23 23:00:11
品牌 Logo 应用领域
飞思卡尔 - FREESCALE 闪存
页数 文件大小 规格书
36页 149K
描述
On-Chip FLASH Programming Routines

AN2635 数据手册

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How to Use the Routines  
Table 3. Summary of On-Chip FLASH Support Routines  
GetByte  
PutByte  
RDVRRNG  
PRGRNGE  
ERARNGE  
DELNUS  
Read and/or  
verify  
a FLASH  
range  
Program a  
FLASH range Erase a PAGE  
(maximum 32 or entire array 3 × A × X + 8  
bytes in a row)  
Generate  
delay  
Get a data byte  
seriallythrough byte serially  
Send a data  
Routine  
Description  
PTA0  
through PTA0  
(cycles)  
Internal  
Operating  
Frequency  
1 MHz to  
8.4 MHz  
1 MHz to  
8.4 MHz  
(f )  
op  
For send-out  
Pullup on PTA0 Pullup on PTA0 option, pullup  
on PTA0  
Hardware  
Requirement  
N/A  
N/A  
N/A  
H:X: First  
address of  
range  
LADDR: Last  
address of  
range  
A: A = $00 for  
send-out  
option or  
A $00 for  
verify option  
For send-out  
option  
PTA0: Input  
and 0 data bit  
(DDRA0 = 0,  
PTA0 = 0)  
For verify  
option,  
DATA array:  
Load data to  
be verified  
against  
H:X: First  
address  
of range  
LADDR: Last  
address of  
range  
CPUSPD: the  
nearest  
H:X: Address  
within a page  
or an array to  
be erased  
CPUSPD: the  
nearest  
PTA0: Input  
and 0 data bit  
(DDRA0 = 0,  
PTA0 = 0)  
A: data to be  
sent  
A: Value  
between  
4 and 255  
X: Value  
between  
1 and 255  
PTA0: Input  
(DDRA0 = 0)  
Entry  
Conditions  
integer f (in  
op  
MHz) times 4  
CTRLBYT:  
$40 = MASS  
erase  
integer f (in  
op  
MHz) times 4  
Data array:  
Load data  
to be  
$00 = PAGE  
erase  
programmed  
FLASH read  
data  
On-Chip FLASH Programming Routines, Rev. 4  
Freescale Semiconductor  
5

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