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參數(shù)資料
| 型號： | CDP1879CD1X |
| 廠商： | HARRIS SEMICONDUCTOR |
| 元件分類： | XO, clock |
| 英文描述： | IC LOGIC 16211 24-BIT FET BUS SWITCH -40+85C SSOP-56 26/TUBE |
| 中文描述： | 1 TIMER(S), REAL TIME CLOCK, CDIP24 |
| 文件頁數(shù)： | 5/18頁 |
| 文件大小： | 100K |
| 代理商： | CDP1879CD1X |
4-108
Input Capacitance
C
IN
C
OUT
t
R
, t
F
-
-
-
-
5
7.5
-
5
7.5
pF
Output Capacitance
-
-
-
-
10
15
-
10
15
Maximum Clock Rise
and Fall Times
-
-
5
-
-
10
-
-
10
μ
s
-
-
10
-
-
1
-
-
-
NOTES:
1. Typical values are for T
A
= 25
o
C and nominal V
DD
.
2. I
OL
= I
OH
= 1
μ
A.
3. Operating current measured with clockout = 488.2
μ
s and no load.
4. See Table 3 and Figure 6 for oscillator circuit information.
Static Electrical Specifications
at T
A
-40
o
C to +85
o
C V
DD
±
5%, Unless Otherwise Specified
(Continued)
PARAMETER
CONDITIONS
LIMITS
UNITS
V
O
(V)
V
IN
(V)
V
DD
(V)
CDP1879
CDPl879C-1
MIN
(NOTE 1)
TYP
MAX
MIN
(NOTE 1)
TYP
MAX
Programming Model
WRITE AND READ REGISTERS
WRITE ONLY REGISTERS
BCD FORMAT
DB7
TENS 0-5
UNITS 0-9
DB0
SECONDS COUNTER (00-59)
TENS 0-5
DB7
DB0
MINUTES COUNTER (00-59)
DB7
DB0
HOURS COUNTER (01 - 12 OR 00-23)
DB7 0=AM, 1=PM
DB6 0=24 HR, 1=12 HR
DB6
X
X
TENS 0-2
TENS 0-3
UNITS 0-9
DB7
DB0
DAY OF MONTH COUNTER
(01-28, 29, 30, 31)
UNITS 0-9
DB7
DB0
MONTH COUNTER
(JAN=1 DEC=12)
DB7 0=NO LEAP YEAR
1=LEAP YEAR
X
TENS 0 OR 1
UNITS 0-9
UNITS 0-9
7
DB7
DB0
CONTROL REGISTER
6
5
4
3
2
1
0
DB0-DB1 - FREQUENCY SELECT
DB2 - START/STOP
DB3 - COUNTER/ALARM LATCH CONTROL
DB4-DB7 - CLOCK OUTPUT SELECT
DB7
DB0
SECONDS ALARM LATCH (00-59)
TENS 0-5
UNITS 0-9
DB7
DB0
MINUTES ALARM LATCH (00-59)
TENS 0-5
UNITS 0-9
DB7
DB0
HOURS ALARM LATCH (01-12 OR 00-23
12 HR, DB7=0 AM, 1=PM
24 HR, DB7=X
TENS 0-2
UNITS 0-9
X
X
X
DB7
DB0
READ ONLY REGISTER
X
0
0
0
0
0
0
DB6
INTERRUPT STATUS REGISTER
DB7=1 ALARM CIRCUIT ACTIVATED INT.
DB6=1 CLOCK OUTPUT ACTIVATED INT.
DB6
CDP1879, CDP1879C-1
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