参数资料
型号: SAB80C517A-N18-T3
厂商: INFINEON TECHNOLOGIES AG
元件分类: 微控制器/微处理器
英文描述: 8-BIT, 18 MHz, MICROCONTROLLER, PQCC84
封装: PLASTIC, LCC-84
文件页数: 88/137页
文件大小: 2089K
代理商: SAB80C517A-N18-T3
Semiconductor Group
5 - 19
On-Chip Peripheral Components
5.5
Modified Oscillator Watchdog Unit
The SAB 80C517A has a new oscillator watchdog unit that has an improved functionality with
respect to the SAB 80C517’s oscillator watchdog.
Use of the Oscillator Watchdog Unit
The unit serves three functions:
– Monitoring of the on-chip oscillator's function.
The watchdog supervises the on-chip oscillator's frequency; if it is lower than the frequency
of the auxiliary RC oscillator in the watchdog unit, the internal clock is supplied by the RC
oscillator and the device is brought into reset; if the failure condition disappears (i.e. the on-
chip oscillator has a higher frequency than the RC oscillator), the part executes a final reset
phase of appr. 0.5 ms in order to allow the oscillatior to stabilize; then the oscillator watchdog
reset is released and the part starts program execution again.
– Restart from the Hardware Power Down Mode.
If the Hardware Power Down Mode is terminated the oscillator watchdog has to control the
correct start-up of the on-chip oscillator and to restart the program. The oscillator watchdog
function is only part of the complete Hardware Power Down sequence; however, the
watchdog works identically to the monitoring function.
– Fast internal reset after power-on.
In this function the oscillator watchdog unit provides a clock supply for the reset before the on-
chip oscillator has started. In this case the oscillator watchdog unit also works identically to
the monitoring function.
If the oscillator watchdog unit shall be used it must be enabled (this is done by applying high level
to the control pin OWE).
相关PDF资料
PDF描述
SAB83C517A-N18-T4 8-BIT, 18 MHz, MICROCONTROLLER, PQCC84
SAB80C517A-S18-T3 8-BIT, 18 MHz, MICROCONTROLLER, PQFP100
SAB83C517A-5S18-T3 8-BIT, MROM, 18 MHz, MICROCONTROLLER, PQFP100
SAB83C517A-5S18-T4 8-BIT, MROM, 18 MHz, MICROCONTROLLER, PQFP100
SAB80C517A-S18-T3 8-BIT, 18 MHz, MICROCONTROLLER, PQFP100
相关代理商/技术参数
参数描述
SAB80C517-M 制造商:INFINEON 制造商全称:Infineon Technologies AG 功能描述:8-Bit CMOS Single-Chip Microcontroller
SAB80C517-M16 制造商:INFINEON 制造商全称:Infineon Technologies AG 功能描述:8-Bit CMOS Single-Chip Microcontroller
SAB80C517-M-T40/85 制造商:INFINEON 制造商全称:Infineon Technologies AG 功能描述:8-Bit CMOS Single-Chip Microcontroller
SAB80C517-N 制造商:INFINEON 制造商全称:Infineon Technologies AG 功能描述:8-Bit CMOS Single-Chip Microcontroller
SAB80C517-N16 制造商:INFINEON 制造商全称:Infineon Technologies AG 功能描述:8-Bit CMOS Single-Chip Microcontroller