參數(shù)資料
型號: TMS320LF2407APGEA
廠商: TEXAS INSTRUMENTS INC
元件分類: 數(shù)字信號處理
英文描述: 16-BIT, 20 MHz, OTHER DSP, PQFP144
封裝: GREEN, PLASTIC, LQFP-144
文件頁數(shù): 115/134頁
文件大?。?/td> 1724K
代理商: TMS320LF2407APGEA
TMS320LF2407A, TMS320LF2406A, TMS320LF2403A, TMS320LF2402A
TMS320LC2406A, TMS320LC2404A, TMS320LC2403A, TMS320LC2402A
DSP CONTROLLERS
SPRS145L JULY 2000 REVISED SEPTEMBER 2007
81
POST OFFICE BOX 1443
HOUSTON, TEXAS 772511443
RS timing
timing requirements for a reset [H = 0.5tc(CO)] (see Figure 28 and Figure 29)
MIN
NOM
MAX
UNIT
tw(RSL)
Pulse duration, stable CLKIN to RS high
8tc(CI)
cycles
tw(RSL2)
Pulse duration, RS low
8tc(CI)
cycles
tp
PLL lock-up time
4096tc(CI)
cycles
td(EX)
Delay time, reset vector executed after PLL lock time
36H
ns
During power-on reset, the device can continue to hold the RS pin low for another 128 CLKIN cycles.
XTAL1
(See Note B)
Address/
Data/
Control
CLKOUT
RS
tw(RSL)
tp
td(EX)
VDD/VDDO
CLKIN
BOOT_EN/XF
tOSCST
(See Note C)
BOOT_EN
I/Os
XF
Code-Dependent
Address/Data/Control
Valid
Hi-Z (See Note D)
NOTES: A. Be certain that the emulation logic is reset before de-asserting the device reset. That is, TRST of the device is not driven high before
the device reset is de-asserted. This is applicable to XDS510
, XDS510PP, and XDS510PP+ class of emulators. New
generation emulators such as SPI515
and XDS510 USB emulators have built-in protection mechanism to take care of this
requirement.
B. XTAL1 refers to the internal oscillator clock if on-chip oscillator is used.
C. tOSCST is the oscillator start-up time, which is dependent on crystal/resonator and board design.
D. All I/Os contain a clamp to VDD. Inputs of approximately 0.7 V above VDD will cause the I/O to sink current. I/Os containing pullups
or pulldowns will always sink/source a small amount of current once powered.
Figure 28. Power-on Reset (See Note A)
XDS510PP+, SP515, and XDS510 USB are trademarks of Spectrum Digital.
XDS510 and XDS510PP, are trademarks of Texas Instruments.
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