參數(shù)資料
型號(hào)： TMS320C2812ZHHS
廠商： TEXAS INSTRUMENTS INC
元件分類： 數(shù)字信號(hào)處理
英文描述： 16-BIT, 150 MHz, OTHER DSP, PBGA179
封裝： LEAD FREE, BGA-179
文件頁數(shù)： 19/156頁
文件大小： 1826K
代理商： TMS320C2812ZHHS
Electrical Specifications
115
April 2001 Revised October 2005
SPRS174M
6.19
General-Purpose Input/Output (GPIO) Input Timing
GPIO
Signal
1
Sampling Window
Output From
Qualifier
1
0
SYSCLKOUT
QUALPRD = 1
(SYSCLKOUT/2)
NOTES: A. This glitch is ignored by the input qualifier. The QUALPRD bit field specifies the qualification sampling period. It can vary from
00 to 0xFF. Input qualification is not applicable when QUALPRD = 00. For any other value “n”, the qualification sampling period
in 2n SYSCLKOUT cycles (i.e., at every 2n SYSCLKOUT cycle, the GPIO pin will be sampled). Six consecutive samples must
be of the same value for a given input to be recognized.
B. For the qualifier to detect the change, the input must be stable for 10 SYSCLKOUT cycles or greater. In other words, the inputs
should be stable for (5
× QUALPRD × 2) SYSCLKOUT cycles. This would enable five sampling periods for detection to occur.
Since external signals are driven asynchronously, a 13-SYSCLKOUT-wide pulse provides reliable recognition.
See Note A
Sampling period, determined by GPxQUAL
[QUALPRD]
(SYSCLKOUT cycle
y 2 y QUALPRD) y 5
Figure 623. GPIO Input Qualifier Example Diagram for QUALPRD = 1
Table 623. General-Purpose Input Timing Requirements
MIN
MAX
UNIT
tw(GPI)
Pulse duration, GPIO low/high
All GPIOs
With no qualifier
2tc(SCO)
cycles
tw(GPI)
Pulse duration, GPIO low/high
All GPIOs
With qualifier
1tc(SCO) + IQT
cycles
Input Qualification Time (IQT) = [tc(SCO) × 2 × QUALPRD] × 5 + [tc(SCO) × 2 × QUALPRD].
GPIOxn
XCLKOUT
tw(GPI)
Figure 624. General-Purpose Input Timing
NOTE:
The pulse width requirement for general-purpose input is applicable for the XBIO and ADCSOC
pins as well.
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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(shí)鐘頻率:90 MHz 程序存儲(chǔ)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(shí)鐘頻率:90 MHz 程序存儲(chǔ)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(shí)鐘頻率:90 MHz 程序存儲(chǔ)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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