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| 型号： | SAK-C167CR-4R33M |
| 厂商： | INFINEON TECHNOLOGIES AG |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 16-BIT, MROM, 33 MHz, MICROCONTROLLER, PQFP144 |
| 封装： | PLASTIC, MQFP-144 |
| 文件页数： | 43/89页 |
| 文件大小： | 1477K |
| 代理商： | SAK-C167CR-4R33M |
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C167CR
C167SR
Functional Description
Data Sheet
46
V3.3, 2005-02
3.13
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 via hardware by (externally) pulling low pin
OWE (internal pull-up provides high level if not connected). In this case (OWE = ‘0’) the
PLL remains idle and provides no clock signal, while the CPU clock signal is derived
directly from the oscillator clock or via prescaler. Also no interrupt request will be
generated in case of a missing oscillator clock.
相关PDF资料 |
PDF描述 |
|---|---|
| SAB-C167CR-L33M | 16-BIT, MROM, 33 MHz, MICROCONTROLLER, PQFP144 |
| SAF-C504-2R24M | 8-BIT, MROM, 24 MHz, MICROCONTROLLER, PQFP44 |
| SAF-C513AO-2EM | 8-BIT, OTPROM, 16 MHz, MICROCONTROLLER, PQFP44 |
| SAF-C868A-1SRBA | 8-BIT, 40 MHz, MICROCONTROLLER, PDSO38 |
| SAK-C868P-1SRBA | 8-BIT, 40 MHz, MICROCONTROLLER, PDSO38 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| SAK-C167CR-4RM | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| SAK-C167CR-4RM B03957 | 制造商:Infineon Technologies AG 功能描述: |
| SAK-C167CR-L33M | 制造商:Infineon Technologies AG 功能描述:16BIT MCU 2K RAM ROM/ROMLESS 167 制造商:Infineon Technologies AG 功能描述:16BIT MCU, 2K RAM, ROM/ROMLESS, 167 制造商:Infineon Technologies AG 功能描述:16BIT MCU, 2K RAM, ROM/ROMLESS, 167; Controller Family/Series:C167CR; Core Size:16bit; No. of I/O's:111; Supply Voltage Min:4.5V; Supply Voltage Max:5.5V; Digital IC Case Style:MQFP; No. of Pins:144; RAM Memory Size:2KB; CPU ;RoHS Compliant: Yes |
| SAKC167CRL33M HA+ | 制造商:Infineon Technologies AG 功能描述: |
| SAK-C167CR-L33M HA+ | 功能描述:16位微控制器 - MCU 16-Bit Single-Chip 5V 33MHz ROM less RoHS:否 制造商:Texas Instruments 核心:RISC 处理器系列:MSP430FR572x 数据总线宽度:16 bit 最大时钟频率:24 MHz 程序存储器大小:8 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:2 V to 3.6 V 工作温度范围:- 40 C to + 85 C 封装 / 箱体:VQFN-40 安装风格:SMD/SMT |
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