參數(shù)資料
型號(hào)： TMX470R1A64PN
廠商： Texas Instruments, Inc.
英文描述： 16/32-Bit RISC Flash Microcontroller
中文描述： 16/32位RISC閃存微控制器
文件頁(yè)數(shù)： 24/46頁(yè)
文件大?。?/td> 381K
代理商： TMX470R1A64PN
www.ti.com
A
external reference resonator/crystal oscillator clock option
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 5a. 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 res-
onator/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 tempera-
ture/voltage extremes.
External
Clock Signal
(toggling 0
–
1.8 V)
OSCOUT
OSCIN
C2
(A)
C1
(A)
Crystal
OSCOUT
OSCIN
(a)
(b)
TMS470R1A64
16/32-Bit RISC Flash Microcontroller
SPNS099–NOVEMBER 2004
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 5b.
A.
The values of C1 and C2 should be provided by the resonator/crystal vendor.
Figure 5. Crystal/Clock Connection
24
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