參數(shù)資料
型號: TMX320F28069UPZPA
廠商: Texas Instruments
文件頁數(shù): 55/174頁
文件大?。?/td> 0K
描述: IC MCU 32BIT 128KB FLSH 100HTQFP
產(chǎn)品培訓(xùn)模塊: ControlSUITE
Piccolo F2806x
TPS75005 Single IC Power for C2000 MCU
標(biāo)準(zhǔn)包裝: 1
系列: TMS320F2806x, Piccolo™, C2000™
核心處理器: C28x
芯體尺寸: 32-位
速度: 80MHz
連通性: CAN,I²C,McBSP,SCI,SPI,UART/USART
外圍設(shè)備: 欠壓檢測/復(fù)位,DMA,POR,PWM,WDT
輸入/輸出數(shù): 54
程序存儲器容量: 256KB(128K x 16)
程序存儲器類型: 閃存
RAM 容量: 50K x 16
電壓 - 電源 (Vcc/Vdd): 1.71 V ~ 1.995 V
數(shù)據(jù)轉(zhuǎn)換器: A/D 16x12b
振蕩器型: 內(nèi)部
工作溫度: -40°C ~ 85°C
封裝/外殼: 100-TQFP 裸露焊盤
包裝: 托盤
其它名稱: 296-30086
TMX320F28069UPZPA-ND
GPIO Signal
1
Sampling Window
Output From
Qualifier
1
0
SYSCLKOUT
QUALPRD = 1
(SYSCLKOUT/2)
(A)
GPxQSELn = 1,0 (6 samples)
[(SYSCLKOUT cycle * 2 * QUALPRD) * 5
]
(C)
Sampling Period determined
by GPxCTRL[QUALPRD]
(B)
(D)
t
w(SP)
t
w(IQSW)
SPRS698D – NOVEMBER 2010 – REVISED DECEMBER 2012
5.23.1.2 GPIO Input Timing
Table 5-69. General-Purpose Input Timing Requirements
MIN
MAX
UNIT
QUALPRD = 0
1tc(SCO)
cycles
tw(SP)
Sampling period
QUALPRD
≠ 0
2tc(SCO) * QUALPRD
cycles
tw(IQSW)
Input qualifier sampling window
tw(SP) * (n
(1) – 1)
cycles
Synchronous mode
2tc(SCO)
cycles
tw(GPI)
(2)
Pulse duration, GPIO low/high
With input qualifier
tw(IQSW) + tw(SP) + 1tc(SCO)
cycles
(1)
"n" represents the number of qualification samples as defined by GPxQSELn register.
(2)
For tw(GPI), pulse width is measured from VIL to VIL for an active-low signal and VIH to VIH for an active-high signal.
A.
This glitch will be ignored by the input qualifier. The QUALPRD bit field specifies the qualification sampling period.
The QUALPRD bit field value can vary from 00 to 0xFF. If QUALPRD = 00, then the sampling period is 1
SYSCLKOUT cycle. For any other value "n", the qualification sampling period in 2n SYSCLKOUT cycles (that is, at
every 2n SYSCLKOUT cycles, the GPIO pin will be sampled).
B.
The qualification period selected via the GPxCTRL register applies to groups of 8 GPIO pins.
C.
The qualification block can take either three or six samples. The GPxQSELn Register selects which sample mode is
used.
D.
In the example shown, for the qualifier to detect the change, the input should be stable for 10 SYSCLKOUT cycles or
greater. In other words, the inputs should be stable for (5 x QUALPRD x 2) SYSCLKOUT cycles. This would ensure
5 sampling periods for detection to occur. Since external signals are driven asynchronously, an 13-SYSCLKOUT-wide
pulse ensures reliable recognition.
Figure 5-51. Sampling Mode
148
Peripheral and Electrical Specifications
Copyright 2010–2012, Texas Instruments Incorporated
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