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參數(shù)資料
| 型號(hào)： | 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)： | 10/24頁 |
| 文件大?。?/td> | 316K |
| 代理商： | AN1759 |
Application Note
AN1759
10
10 hours when in 24-hour mode. When using 12-hour mode, bit 5 is a
1 for p.m. and a 0 for a.m.
Figure 8. DS1307 Register Map
C ontrol Register
The control register is used to control the SQW/OUT pin.
OUT — Controls the output level of the SQW/OUT pin when SQWE = 0.
1 = SQW/OUT pin HIGH
0 = SQW/OUT pin LOW
SQWE — Enables the oscillator square wave on the SQW/OUT pin
1 = Square wave enabled
0 = Square wave disabled
RS — Square wave output frequency
RS1 = 0 and RS0 = 0 —> 1 Hz
RS1 = 0 and RS1 = 1 —> 4.096 kHz
RS1 = 1 and RS1 = 0 —> 8.192 kHz
RS1 = 1 and RS1 = 1 —> 32.768 kHz
$00
BIT 7 BIT 6 BIT 5 BIT 4 BIT 3 BIT 2 BIT 1 BIT 0
SECONDS
MINUTES
HOURS
CLOCK
HALT
10 SECONDS
10 MINUTES
DAY
DATE
MONTH
YEAR
X
X
X
X
X
X
X
X
12
24
10 HR
A/P
10
HR
X
X
X
10 DATE
10 MONTH
10 YEAR
X
X
X
X
OUT
SQWE
RS1
RS0
$01
$02
$03
$04
$05
$06
$07
F
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
n
.
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