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參數(shù)資料
| 型號： | TMS320C2812ZHHS |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 數(shù)字信號處理 |
| 英文描述： | 16-BIT, 150 MHz, OTHER DSP, PBGA179 |
| 封裝： | LEAD FREE, BGA-179 |
| 文件頁數(shù)： | 88/156頁 |
| 文件大小： | 1826K |
| 代理商： | TMS320C2812ZHHS |
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Functional Overview
37
April 2001 Revised October 2005
SPRS174M
Table 34. Boot Mode Selection
BOOT MODE SELECTED
GPIOF4
(SCITXDA)
GPIOF12
(MDXA)
GPIOF3
(SPISTEA)
GPIOF2
(SPICLK)
GPIO PU status
PU
No PU
Jump to Flash/ROM address 0x3F 7FF6
A branch instruction must have been programmed here prior to
reset to redirect code execution as desired.
1
x
Call SPI_Boot to load from an external serial SPI EEPROM
0
1
x
Call SCI_Boot to load from SCI-A
0
1
Jump to H0 SARAM address 0x3F 8000
0
1
0
Jump to OTP address 0x3D 7800
0
1
Call Parallel_Boot to load from GPIO Port B
0
PU = pin has an internal pullup No PU = pin does not have an internal pullup
Extra care must be taken due to any effect toggling SPICLK to select a boot mode may have on external logic.
§ If the boot mode selected is Flash, H0, or OTP, then no external code is loaded by the bootloader.
3.2.11
Security
The F281x and C281x support high levels of security to protect the user firmware from being
reverse-engineered. The security features a 128-bit password (hardcoded for 16 wait states), which the user
programs into the flash. One code security module (CSM) is used to protect the flash/ROM/OTP and the L0/L1
SARAM blocks. The security feature prevents unauthorized users from examining the memory contents via
the JTAG port, executing code from external memory or trying to boot-load some undesirable software that
would export the secure memory contents. To enable access to the secure blocks, the user must write the
correct 128-bit ”KEY” value, which matches the value stored in the password locations within the Flash/ROM.
NOTE:
For code security operation, all addresses between 0x3F7F80 and 0x3F7FF5 cannot be used
as program code or data, but must be programmed to 0x0000 when the Code Security
Password is programmed. If security is not a concern, then these addresses may be used for
code or data.
The 128-bit password (at 0x3F 7FF8 0x3F 7FFF) must not be programmed to zeros. Doing
so would permanently lock the device.
Code Security Module Disclaimer
The Code Security Module (“CSM”) included on this device was designed to password
protect the data stored in the associated memory (either ROM or Flash) and is warranted
by Texas Instruments (TI), in accordance with its standard terms and conditions, to
conform to TI’s published specifications for the warranty period applicable for this device.
TI DOES NOT, HOWEVER, WARRANT OR REPRESENT THAT THE CSM CANNOT BE
COMPROMISED OR BREACHED OR THAT THE DATA STORED IN THE
ASSOCIATED MEMORY CANNOT BE ACCESSED THROUGH OTHER MEANS.
MOREOVER, EXCEPT AS SET FORTH ABOVE, TI MAKES NO WARRANTIES OR
REPRESENTATIONS CONCERNING THE CSM OR OPERATION OF THIS DEVICE,
INCLUDING ANY IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR
A PARTICULAR PURPOSE.
IN NO EVENT SHALL TI BE LIABLE FOR ANY CONSEQUENTIAL, SPECIAL,
INDIRECT, INCIDENTAL, OR PUNITIVE DAMAGES, HOWEVER CAUSED, ARISING
IN ANY WAY OUT OF YOUR USE OF THE CSM OR THIS DEVICE, WHETHER OR NOT
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TMS320C28341 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:Delfino Microcontrollers |
| TMS320C28341ZEPQ | 制造商:Texas Instruments 功能描述:DELFINO MICROCONTROLLER - Trays |
| TMS320C28341ZFEQ | 功能描述:32位微控制器 - MCU Delfino MCU RoHS:否 制造商:Texas Instruments 核心:C28x 處理器系列:TMS320F28x 數(shù)據(jù)總線寬度:32 bit 最大時鐘頻率:90 MHz 程序存儲器大小:64 KB 數(shù)據(jù) RAM 大小:26 KB 片上 ADC:Yes 工作電源電壓:2.97 V to 3.63 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:LQFP-80 安裝風(fēng)格:SMD/SMT |
| TMS320C28341ZFET | 功能描述:32位微控制器 - MCU Delfino MCU RoHS:否 制造商:Texas Instruments 核心:C28x 處理器系列:TMS320F28x 數(shù)據(jù)總線寬度:32 bit 最大時鐘頻率:90 MHz 程序存儲器大小:64 KB 數(shù)據(jù) RAM 大小:26 KB 片上 ADC:Yes 工作電源電壓:2.97 V to 3.63 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:LQFP-80 安裝風(fēng)格:SMD/SMT |
| TMS320C28341ZHHT | 功能描述:32位微控制器 - MCU Delfino MCU RoHS:否 制造商:Texas Instruments 核心:C28x 處理器系列:TMS320F28x 數(shù)據(jù)總線寬度:32 bit 最大時鐘頻率:90 MHz 程序存儲器大小:64 KB 數(shù)據(jù) RAM 大小:26 KB 片上 ADC:Yes 工作電源電壓:2.97 V to 3.63 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:LQFP-80 安裝風(fēng)格:SMD/SMT |
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