参数资料
型号: MC68HC05E1DWR2
厂商: MOTOROLA INC
元件分类: 微控制器/微处理器
英文描述: 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PDSO28
封装: SOIC-28
文件页数: 59/86页
文件大小: 491K
代理商: MC68HC05E1DWR2
General Release Specication
MC68HC05E1 — Revision 2.0
62
Timer, Phase-Locked Loop, and Custom Periodic Interrupt
MOTOROLA
Timer, Phase-Locked Loop, and Custom Periodic
Example:
CLEARING TIMER OVERFLOW FLAG (TOF) BIT
SEI
SEI NOT REQUIRED IF USED WITHIN
TIMER INTERRUPT ROUTINE.
LDA
#$73
AND
$TCSR
OR
#$40
MASK RTIF BIT
STA
$TCSR
CLI
DO NOT USE CLI IF THIS CODE
SEGMENT IF USED WITHIN TIMER
INTERRUPT ROUTINE
CLEARING TIMER OVERFLOW ENABLE (TOFE) BIT
SEI
LDA
#$D3
AND
$TCSR
OR
#$C0
MASK RTIF & TOF
STA
$TCSR
CLI
DO NOT USE CLI IF THIS CODE
SEGMENT IF USED WITHIN TIMER
INTERRUPT ROUTINE
6.3.2 Computer Operating Properly (COP) Watchdog Reset
The COP watchdog timer function is implemented on this device by
using the output of the RTI circuit and further dividing it by eight. The
minimum COP reset rates are listed in Table 6-2. If the COP circuit times
out, an internal reset is generated and the normal reset vector is fetched.
Preventing a COP time-out is done by writing a ’0’ to bit 0 of address
$1FF0. When the COP is cleared, only the final divide by eight stage
(output of the RTI) is cleared.
This function is a mask option.
相关PDF资料
PDF描述
MC68HC05P6P 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PDIP28
MSU2958C25-009J 8-BIT, FLASH, 25 MHz, MICROCONTROLLER, PQCC44
MSU2958C16-010U 8-BIT, FLASH, 16 MHz, MICROCONTROLLER, PQFP44
MSU2958C40-013U 8-BIT, FLASH, 40 MHz, MICROCONTROLLER, PQFP44
MSU2958C40-027J 8-BIT, FLASH, 40 MHz, MICROCONTROLLER, PQCC44
相关代理商/技术参数
参数描述
MC68HC05E5 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:General Release Specification
MC68HC05E5DW 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:General Release Specification
MC68HC05E5P 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:General Release Specification
MC68HC05E6 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:HCMOS Microcontroller Unit
MC68HC05E6CDW 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:HCMOS Microcontroller Unit