參數(shù)資料
型號: RF5C62
廠商: RICOH COMPANY LTD
元件分類: XO, clock
英文描述: REAL-TIME CLOCK
中文描述: 1 TIMER(S), REAL TIME CLOCK, PDSO18
封裝: SOP-18
文件頁數(shù): 9/48頁
文件大?。?/td> 419K
代理商: RF5C62
5
RP/RF/RS5C62
AC ELECTRICAL CHARACTERISTICS
TIMING CHART
V
SS
=0V, Topt=–20 to +70C
Symbol
Item
V
DD
=5V±10%
V
DD
=3V±10%
V
DD
=5V±20%
Unit
MIN.
MAX.
MIN.
MAX.
MIN.
MAX.
t
CES
t
CEH
t
AS
(RD)
t
AS
(WR)
t
AH
(RD)
t
AH
(WR)
t
RR
t
RZ
t
W
t
DS
t
DH
CE Setup Time
500
1,000
500
ns
CE Hold Time
500
1,000
500
ns
Address Setup Time (For Read)
20
20
20
ns
Address Setup Time (For Write)
20
20
20
ns
Address Hold Time (For Read)
10
10
10
ns
Address Hold Time (For Write)
10
10
10
ns
Output Data Delay Time
(C
L
=100pF)
120
295
150
ns
Output Data Floating Time
70
95
75
ns
Write Pulse Width
120
195
150
ns
Input Data Setup Time
60
95
75
ns
Input Data Hold Time
10
10
10
ns
Read
CE
or
or
A0 to A3
D0 to D3
(Read Data)
D0 to D3
(Write Data)
Write
CS
RD
RD
CS
CS
WR
WR
CS
t
CES
t
CEH
t
DH
Valid
Valid
t
RR
t
AH(RD)
t
AS(RD)
t
AS(WR)
t
AH(WR)
t
RZ
t
DS
t
W
*
) The diagonally shaded sections marked in the above timing chart indicate the allowable high or low levels of the CS, RD, and WR pin inputs.
Input/Output Conditions
(V
DD
= 5V±10%)
V
IH
= 2.2V
V
IL
= 0.8V
V
OH
= 2.2V
V
OL
= 0.8V
(V
DD
= 3V±10%)
V
IH
= 0.8
V
DD
V
IL
= 0.2
V
DD
V
OH
= 0.8
V
DD
V
OL
= 0.2
V
DD
(V
DD
= 5V±20%)
V
IH
= 2.4V
V
IL
= 0.4V
V
OH
= 2.4V
V
OL
= 0.4V
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