參數(shù)資料
型號(hào)： TMS370Cx2xJC
廠商： Texas Instruments, Inc.
元件分類： 8位微控制器
英文描述： 8-BIT MICROCONTROLLER
中文描述： 8位微控制器
文件頁(yè)數(shù)： 16/54頁(yè)
文件大?。?/td> 785K
代理商： TMS370CX2XJC
TMS370Cx9x
8-BIT MICROCONTROLLER
SPNS036B – JANUARY 1996 – REVISED FEBRUARY 1997
16
POST OFFICE BOX 1443
HOUSTON, TEXAS 77251–1443
clock modules
The ‘370Cx9x family provides two clock options which are referred to as divide-by-1 (PLL) and divide-by-4
(standard oscillator). Both the divide-by-1 and divide-by-4 options are configurable during the manufacturing
process of a TMS370 microcontroller. The ‘370C090A ROM-masked devices offer both options to meet system
engineering requirements. Only one of the two clock options is allowed on the ROM device while the EPROM
device ’792 has only the divide-by-4 clock.
The divide-by-1 clock module option provides the capability for reduced electromagnetic interference (EMI) with
no added cost.
The divide-by-1 provides a 1-to-1 match of the external resonator frequency (CLKIN) to the internal system clock
(SYSCLK) frequency. The divide-by-4 produces a SYSCLK which is one-fourth the frequency of the external
resonator. Inside the divide-by-1 module, the frequency of the external resonator is multiplied by four. The clock
module then divides the resulting signal by four to provide the four-phased internal system clock signals. The
resulting SYSCLK is equal to the resonator frequency. The frequencies are formulated as follows:
Divide-by-4 option : SYSCLK
external resonator frequency
4
external resonator frequency
CLKIN
4
Divide-by-1 option : SYSCLK
4
4
CLKIN
The main advantage of choosing a divide-by-1 oscillator is that EMI is reduced. The harmonics of low-speed
resonators extend through less of the emissions spectrum than the harmonics of faster resonators. The
divide-by-1 provides the capability of reducing the resonator speed by four times, and this results in a steeper
decay of emissions produced by the oscillator.
相關(guān)PDF資料
PDF描述
TMS370Cx2xJD 8-BIT MICROCONTROLLER
TMS370Cx2xN 8-BIT MICROCONTROLLER
TMS370Cx2xNJ 8-BIT MICROCONTROLLER
TMS370CX32 8-BIT MICROCONTROLLER
TMS370CX32FN 8-BIT MICROCONTROLLER
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TMS370P16A27FNQ 制造商:Texas Instruments 功能描述:
TMS37112B3 WAF 制造商:Texas Instruments 功能描述:
TMS37122DPWRG4 制造商:Texas Instruments 功能描述:3D Analog Front-end, TITL
TMS37145TEAIE 制造商:Texas Instruments 功能描述:
TMS37145TEAIEG 制造商:Texas Instruments 功能描述:
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*