參數(shù)資料
型號(hào): CDP1879C-1
廠商: Intersil Corporation
英文描述: CMOS Real-Time Clock
中文描述: CMOS實(shí)時(shí)時(shí)鐘
文件頁(yè)數(shù): 17/18頁(yè)
文件大?。?/td> 100K
代理商: CDP1879C-1
4-120
FIGURE 17. READ CYCLE TIMING WAVEFORMS
ADDRESS/CHIP SELECT
READ
TPA
DATA TO CPU
t
CS
t
RH
t
RD
t
DR
t
DA
t
DH
Dynamic Electrical Specifications
at T
A
-40
o
C to +85
o
C, Input t
R
, t
F
= 10ns, C
L
= 50 pF
PARAMETER
V
DD
(V)
LIMITS
UNITS
CDP1879
CDP1879C-1
(NOTE 1)
MIN
MAX
(NOTE 1)
MIN
MAX
Write Cycle Times (See Figure 18)
Address Setup to Write
t
AS
5
10
225
110
-
-
225
-
-
-
ns
Write Pulse Width
t
WR
5
10
150
70
-
-
150
-
-
-
Data Setup to Write
t
DS
5
10
65
30
-
-
65
-
-
-
Address Hold after Write
t
AH
5
10
0
0
-
-
0
-
-
-
Data Hold after Write
t
WH
5
10
150
80
-
-
150
-
-
-
Chip Select Setup to TPA
t
CS
5
10
50
30
-
-
50
-
-
-
NOTE:
1. Time required by a limit device to allow for the indicated function.
CDP1879, CDP1879C-1
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