參數(shù)資料
型號(hào): TMS470R1A384PZQ
廠商: Texas Instruments
文件頁(yè)數(shù): 29/62頁(yè)
文件大?。?/td> 0K
描述: IC RISC MCU 384K FLASH 100-LQFP
標(biāo)準(zhǔn)包裝: 90
系列: TMS470
核心處理器: ARM7
芯體尺寸: 16/32-位
速度: 48MHz
連通性: CAN,C2Slb,I²C,SCI,SPI
外圍設(shè)備: DMA,PWM,WDT
輸入/輸出數(shù): 53
程序存儲(chǔ)器容量: 384KB(384K x 8)
程序存儲(chǔ)器類(lèi)型: 閃存
RAM 容量: 32K x 8
電壓 - 電源 (Vcc/Vdd): 1.71 V ~ 2.05 V
數(shù)據(jù)轉(zhuǎn)換器: A/D 12x10b
振蕩器型: 外部
工作溫度: -40°C ~ 125°C
封裝/外殼: 100-LQFP
包裝: 管件
配用: 296-23003-ND - KIT DEV KICKSTART TMS470
External Reference Resonator/Crystal Oscillator Clock Option
External
Clock Signal
(toggling 0-1.8 V)
OSCOUT
OSCIN
Crystal
OSCOUT
OSCIN
(a)
(b)
C1(A)
C2(A)
www.ti.com ......................................................................................................................................................... SPNS110E – AUGUST 2005 – REVISED MAY 2008
The oscillator is enabled by connecting the appropriate fundamental 4-20 MHz resonator/crystal and load
capacitors across the external OSCIN and OSCOUT pins as shown in Figure 6a. The oscillator is a single-stage
inverter held in bias by an integrated bias resistor. This resistor is disabled during leakage test measurement and
HALT mode. TI strongly encourages each customer to submit samples of the device to the
resonator/crystal vendors for validation. The vendors are equipped to determine what load capacitors will
best tune their resonator/crystal to the microcontroller device for optimum start-up and operation over
temperature/voltage extremes.
An external oscillator source can be used by connecting a 1.8-V clock signal to the OSCIN pin and leaving the
OSCOUT pin unconnected (open) as shown in Figure 6b.
A.
The values of C1 and C2 should be provided by the resonator/crystal vendor.
Figure 6. Crystal/Clock Connection
Copyright 2005–2008, Texas Instruments Incorporated
35
Product Folder Link(s): TMS470R1A384
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