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参数资料
型号： ST10F269Z2Q3
厂商： STMICROELECTRONICS
元件分类： 微控制器/微处理器
英文描述： 16-BIT, FLASH, 40 MHz, MICROCONTROLLER, PQFP144
封装： 28 X 28 MM, PLASTIC, QFP-144
文件页数： 87/160页
文件大小： 1541K
代理商： ST10F269Z2Q3
ST10F269
32/160
Figure 7 : Memory Configuration after Reset
5.6.3 - Loading the Startup Code
After sending the identification Byte the BSL
enters a loop to receive 32 Bytes via ASC0. These
Byte
are
stored
sequentially
into
locations
00’FA40h through 00’FA5Fh of the internal RAM.
So up to 16 instructions may be placed into the
RAM area. To execute the loaded code the BSL
then jumps to location 00’FA40h, which is the first
loaded instruction.
The
bootstrap
loading
sequence
is
now
terminated, the ST10F269 remains in BSL mode,
however. Most probably the initially loaded routine
will load additional code or data, as an average
application is likely to require substantially more
than 16 instructions. This second receive loop
may directly use the pre-initialized interface ASC0
to
receive
data
and
store
it
to
arbitrary
user-defined locations.
This second level of loaded code may be the final
application code. It may also be another, more
sophisticated,
loader
routine
that
adds
a
transmission protocol to enhance the integrity of
the loaded code or data. It may also contain a
code
sequence
to
change
the
system
configuration and enable the bus interface to store
the received data into external memory.
This process may go through several iterations or
may directly execute the final application. In all
cases the ST10F269 will still run in BSL mode,
that means with the watchdog timer disabled and
limited access to the internal Flash area.
All code fetches from the internal Flash area
(00’0000h...00’7FFFh or 01’0000h...01’7FFFh, if
mapped to segment 1) are redirected to the
special Boot-ROM. Data fetches access will
access the internal Boot-ROM of the ST10F269, if
any is available, but will return undefined data on
ROMless devices.
5.6.4 - Exiting Bootstrap Loader Mode
In order to execute a program in normal mode, the
BSL
mode
must
be
terminated
first.
The
ST10F269 exits BSL mode upon a software reset
(ignores the level on P0L.4) or a hardware reset
(P0L.4 must be high). After a reset the ST10F269
will start executing from location 00’0000h of the
internal
Flash
or
the
external
memory,
as
programmed via pin EA.
16M Bytes
BSL mode active
Yes (P0L.4=’0’)
No (P0L.4=’1’)
EA pin
High
Low
Access to application
Code fetch from internal
Flash area
Test-Flash access
User Flash access
Data fetch from internal
Flash area
User Flash access
IRAM
1
0
User
Flash
Test
Flash
Segment
2
255
Access to:
external
bus
disabled
internal
enabled
Flash
1
0
User
Flash
Test
Flash
Segment
2
255
Access to:
external
bus
enabled
internal
enabled
Flash
IRAM
1
0
User
Flash
Segment
2
255
Access:
depends on
reset config
EA, Port0
depends on
reset config
EA, Port0
IRAM
相关PDF资料
PDF描述
ST10F269Z2Q6 16-BIT, FLASH, 40 MHz, MICROCONTROLLER, PQFP144
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相关代理商/技术参数
参数描述
ST10F269Z2Q6 功能描述:16位微控制器 - MCU 256K Flash 12K RAM RoHS:否 制造商:Texas Instruments 核心:RISC 处理器系列:MSP430FR572x 数据总线宽度:16 bit 最大时钟频率:24 MHz 程序存储器大小:8 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:2 V to 3.6 V 工作温度范围:- 40 C to + 85 C 封装 / 箱体:VQFN-40 安装风格:SMD/SMT
ST10F269Z2Q6/TR 功能描述:16位微控制器 - MCU 16B MCU 256K Byte and 12K Byte RAM RoHS:否 制造商:Texas Instruments 核心:RISC 处理器系列:MSP430FR572x 数据总线宽度:16 bit 最大时钟频率:24 MHz 程序存储器大小:8 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:2 V to 3.6 V 工作温度范围:- 40 C to + 85 C 封装 / 箱体:VQFN-40 安装风格:SMD/SMT
ST10F269Z2QX 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:16-BIT MCU WITH MAC UNIT, 256K BYTE FLASH MEMORY AND 12K BYTE RAM
ST10F269Z2T3 功能描述:16位微控制器 - MCU ST10F272 16B MCU RoHS:否 制造商:Texas Instruments 核心:RISC 处理器系列:MSP430FR572x 数据总线宽度:16 bit 最大时钟频率:24 MHz 程序存储器大小:8 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:2 V to 3.6 V 工作温度范围:- 40 C to + 85 C 封装 / 箱体:VQFN-40 安装风格:SMD/SMT
ST10F269Z2T6 功能描述:16位微控制器 - MCU ST10F272 16B MCU RoHS:否 制造商:Texas Instruments 核心:RISC 处理器系列:MSP430FR572x 数据总线宽度:16 bit 最大时钟频率:24 MHz 程序存储器大小:8 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:2 V to 3.6 V 工作温度范围:- 40 C to + 85 C 封装 / 箱体:VQFN-40 安装风格:SMD/SMT
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