- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄364677 > AN1759 (飛思卡爾半導(dǎo)體(中國)有限公司) Add a Non-Volatile Clock to the MC68HC705J1A PDF資料下載
參數(shù)資料
| 型號： | AN1759 |
| 廠商： | 飛思卡爾半導(dǎo)體(中國)有限公司 |
| 英文描述： | Add a Non-Volatile Clock to the MC68HC705J1A |
| 中文描述： | 添加非易失時(shí)鐘的MC68HC705J1A |
| 文件頁數(shù)： | 21/24頁 |
| 文件大小： | 316K |
| 代理商： | AN1759 |
Application Note
Code Listing
AN1759
21
*** RAM VARIABLES ******************************************************************
* Buffer for test reading data from the DS1307
ORG
RAM
BUF_SECONDS
DB
1
BUF_MINUTES
DB
1
BUF_DAY
DB
1
BUF_DATE
DB
1
BUF_MONTH
DB
1
BUF_YEAR
DB
1
;buffer on HC05 for seconds
;buffer on HC05 for hours
;buffer on HC05 for the day
;buffer on HC05 for the date
;buffer on HC05 for the month
;buffer on HC05 for the year
*** MAIN ROUTINE *******************************************************************
ORG
EPROM
*** Intialize Ports
START
lda
#$03
sta
SER_PORT
lda
#$03
sta
DDRA
;start at begining of EPROM
;init SER_PORT
;make SER_PORT pins outputs
*** DS1307 configuration
*** Turn on osc, turn on SQW/OUT pin with 1 Hz signal
jsr
START_SER
;start serial transmission
lda
jsr
lda
jsr
lda
jsr
#DS1307_WRITE
TXD
#CONTROL
TXD
#$10
TXD
;address the DS1307 device, write
;send address of control reg
;send config data
jsr
STOP_SER
;stop serial transmission
*** Write Starting Time to DS1307
jsr
START_SER
;start serial transmission
lda
jsr
lda
jsr
lda
jsr
lda
jsr
lda
jsr
lda
jsr
lda
jsr
lda
jsr
lda
jsr
#DS1307_WRITE
TXD
#SECONDS
TXD
#START_SECONDS
TXD
#START_MINUTES
TXD
#START_HOURS
TXD
#START_DAY
TXD
#START_DATE
TXD
#START_MONTH
TXD
#START_YEAR
TXD
;address the DS1307 device, write
;start address of DS1307
;write seconds
;write minutes
;write hours
;write day
;write date
;write month
;write year
jsr
STOP_SER
;stop serial transmission
F
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
n
.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AN1768 | ADMISSIBLE AVALANCHE POWER OF SCHOTTKY DIODES |
| AN1775 | Expanding Digital Input with an A/D Converter |
| AN1816 | USING THE HC912B32 TO IMPLEMENT THE DISTRIBUTED SYSTEMS INTERFACE (DSI) PROTOCOL |
| AN2104 | Using Background Debug Mode for the M68HC12 Family |
| AN2154FAP | TV/Video Signal Processor |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AN175C25A | 制造商:NEW SURPLUS HARDWARE 功能描述: |
| AN176-20A | 制造商:AN# - MILITARY 功能描述: |
| AN176-40 | 制造商:AN# - MILITARY 功能描述: |
| AN1768 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:ADMISSIBLE AVALANCHE POWER OF SCHOTTKY DIODES |
| AN176H22A | 制造商:NEW SURPLUS HARDWARE 功能描述: |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。