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参数资料
| 型号： | MB90F428GAPFV |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 16-BIT, FLASH, 16 MHz, MICROCONTROLLER, PQFP100 |
| 封装： | PLASTIC, LQFP-100 |
| 文件页数： | 31/85页 |
| 文件大小： | 877K |
| 代理商： | MB90F428GAPFV |
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MB90420G/425G Series
37
2.
Watchdog Timer/Time Base Timer/Clock Timer
The watchdog timer, timer base timer, and clock timer have the following circuit configuration.
Watchdog timer : Watchdog counter, control register, watchdog reset circuit
Time base timer : 18-bit timer, interval interrupt control circuit
Clock timer
: 15-bit timer, interval interrupt control circuit
(1) Watchdog timer function
The watchdog timer is composed of a 2-bit watchdog counter that uses the carry signal from the 18-bit time
base timer or 15-bit clock timer as a clock source, plus a control register and watchdog reset control circuit.
After startup, this function will reset the CPU if not cleared within a given time.
(2) Time base timer function
The time base timer is an 18-bit free-run counter (time base counter) synchronized with the internal count clock
(base oscillator divided by 2) , with an interval timer function providing a selection of four interval times. Other
functions include a timer output for an oscillator stabilization wait time and clock feed to the watchdog timer or
other operating clocks. Note that the time base timer uses the main clock regardless of the setting of the MCS
bit or SCS bit in the CKSCR register.
(3) Clock timer function
The clock timer provides functions including a clock source for the watchdog timer, a sub clock base oscillator
stabilization wait timer, and an interval timer to generate an interrupt at fixed intervals. Note that the clock timer
uses the sub clock regardless of the setting of the MCS bit or SCS bit in the CKSCR register.
相关PDF资料 |
PDF描述 |
|---|---|
| MB90428GBPF | 16-BIT, MROM, 16 MHz, MICROCONTROLLER, PQFP100 |
| MB90428GCPF | 16-BIT, MROM, 16 MHz, MICROCONTROLLER, PQFP100 |
| MB90427GCPFV | 16-BIT, MROM, 16 MHz, MICROCONTROLLER, PQFP100 |
| MB90F423GBPF | 16-BIT, FLASH, 16 MHz, MICROCONTROLLER, PQFP100 |
| MB90423GCPFV | 16-BIT, MROM, 16 MHz, MICROCONTROLLER, PQFP100 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MB90F428GAPMC-GSE1 | 制造商:FUJITSU 功能描述: |
| MB90F428GCPFR-GSE1 | 制造商:FUJITSU 功能描述: |
| MB90F438LSPFR-GE1 | 制造商:FUJITSU 功能描述: |
| MB90F438LSPMCR-GE1 | 制造商:FUJITSU 功能描述: |
| MB90F439PMCR-GE1 | 制造商:FUJITSU 功能描述: |
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