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TMS320F28335ZHHA 参数 Datasheet PDF下载

TMS320F28335ZHHA图片预览
型号: TMS320F28335ZHHA
PDF下载: 下载PDF文件 查看货源
内容描述: 数字信号控制器(DSC ) [Digital Signal Controllers (DSCs)]
分类和应用: 微控制器和处理器外围集成电路数字信号处理器装置PC时钟
文件页数/大小: 195 页 / 2496 K
品牌: TI [ TEXAS INSTRUMENTS ]
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TMS320F28335, TMS320F28334, TMS320F28332  
TMS320F28235, TMS320F28234, TMS320F28232  
SPRS439IJUNE 2007REVISED MARCH 2011  
www.ti.com  
Table 6-11. Reset (XRS) Timing Requirements  
MIN  
32 tc(OSCCLK)  
32 tc(OSCCLK)  
NOM  
MAX  
UNIT  
cycles  
cycles  
(1)  
tw(RSL1)  
tw(RSL2)  
Pulse duration, stable input clock to XRS high  
Pulse duration, XRS low  
Warm reset  
Pulse duration, reset pulse generated by  
watchdog  
tw(WDRS)  
512tc(OSCCLK)  
cycles  
td(EX)  
tOSCST  
th(boot-mode)  
Delay time, address/data valid after XRS high  
Oscillator start-up time  
32tc(OSCCLK)  
10  
cycles  
ms  
(2)  
1
Hold time for boot-mode pins  
200tc(OSCCLK)  
cycles  
(1) In addition to the tw(RSL1) requirement, XRS has to be low at least for 1 ms after VDD reaches 1.5 V.  
(2) Dependent on crystal/resonator and board design.  
XCLKIN  
X1/X2  
OSCCLK/8  
XCLKOUT  
XRS  
User-Code Dependent  
OSCCLK * 5  
t
w(RSL2)  
User-Code Execution Phase  
t
d(EX)  
Address/Data/  
Control  
(Don’t Care)  
User-Code Execution  
(Internal)  
(A)  
t
Boot-ROM Execution Starts  
GPIO Pins as Input  
h(boot-mode)  
Boot-Mode  
Pins  
Peripheral/GPIO Function  
User-Code Dependent  
Peripheral/GPIO Function  
User-Code Execution Starts  
I/O Pins  
GPIO Pins as Input (State Depends on Internal PU/PD)  
User-Code Dependent  
A. After reset, the Boot ROM code samples BOOT Mode pins. Based on the status of the Boot Mode pin, the boot code  
branches to destination memory or boot code function. If Boot ROM code executes after power-on conditions (in  
debugger environment), the Boot code execution time is based on the current SYSCLKOUT speed. The  
SYSCLKOUT will be based on user environment and could be with or without PLL enabled.  
Figure 6-7. Warm Reset  
130  
Electrical Specifications  
Copyright © 2007–2011, Texas Instruments Incorporated  
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Product Folder Link(s): TMS320F28335 TMS320F28334 TMS320F28332 TMS320F28235 TMS320F28234  
TMS320F28232  
 
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