參數(shù)資料
型號： SAB-C161S-LM 3V AA
廠商： Infineon Technologies
文件頁數(shù)： 21/75頁
文件大?。?/td> 0K
描述： IC MICROCONTROLLER 16BIT MQFP80
標(biāo)準(zhǔn)包裝： 850
系列： C16xx
核心處理器： C166
芯體尺寸： 16-位
速度： 20MHz
連通性： EBI/EMI，SPI，UART/USART
外圍設(shè)備： POR，PWM，WDT
輸入/輸出數(shù)： 63
程序存儲器類型： ROMless
RAM 容量： 2K x 8
電壓 - 電源 (Vcc/Vdd)： 3 V ~ 3.6 V
振蕩器型： 外部
工作溫度： 0°C ~ 70°C
封裝/外殼： 80-QFP
包裝： 帶卷 (TR)
其它名稱： B161SLM3VAAXT
C161SLM3VAABAUMA1
C161SLM3VAABXUMA1
SABC161SLM3VAAXT
SP000014946
C161S
Functional Description
Data Sheet
24
V1.0, 2003-11
3.9
Oscillator Watchdog
The Oscillator Watchdog (OWD) monitors the clock signal generated by the on-chip
oscillator (either with a crystal or via external clock drive). For this operation the PLL
provides a clock signal which is used to supervise transitions on the oscillator clock. This
PLL clock is independent from the XTAL1 clock. When the expected oscillator clock
transitions are missing the OWD activates the PLL Unlock / OWD interrupt node and
supplies the CPU with the PLL clock signal. Under these circumstances the PLL will
oscillate with its basic frequency.
In direct drive mode the PLL base frequency is used directly (
f
CPU = 2 … 5 MHz).
In prescaler mode the PLL base frequency is divided by 2 (
f
CPU = 1 … 2.5 MHz).
Note: The CPU clock source is only switched back to the oscillator clock after a
hardware reset.
The oscillator watchdog can be disabled by setting bit OWDDIS in register SYSCON.
In this case (OWDDIS = ‘1’) the PLL remains idle and provides no clock signal, while the
CPU clock signal is derived directly from the oscillator clock or via prescaler or SDD. Also
no interrupt request will be generated in case of a missing oscillator clock.
Note: At the end of a reset bit OWDDIS reflects the inverted level of pin RD at that time.
Thus the oscillator watchdog may also be disabled via hardware by (externally)
pulling the RD line low upon a reset, similar to the standard reset configuration via
PORT0.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
SABC161SLM3VAAXT 制造商:Infineon Technologies AG 功能描述:MCU 16-bit C166 CISC/RISC ROMLess 3.3V 80-Pin MQFP
SAB-C161V-L16M 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:16-Bit CMOS Single-Chip Microcontroller
SABC16324D33F 制造商:INFINEON 功能描述:New
SABC163L25F 制造商:Infineon Technologies AG 功能描述:MCU 16-bit C166 CISC/RISC ROMLess 5V 100-Pin TQFP
SAB-C163-L25F 制造商:Rochester Electronics LLC 功能描述:- Bulk
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