rs5c62 RICOH Co.,Ltd., rs5c62 Datasheet - Page 9

• Manufacturer Part Number: rs5c62
• Description: Real-time Clock
• Manufacturer: RICOH Co.,Ltd.

AC ELECTRICAL CHARACTERISTICS
TIMING CHART
Input/Output Conditions
t
t
t
t
Symbol
AH
AS
AH
AS
Read
Write
*
t
t
t
t
t
t
) 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.
CEH
t
CES
(WR)
DH
(RD)
(WR) Address Hold Time (For Write)
RR
DS
(RD)
RZ
W
(V
V
V
V
V
DD
IH
IL
OH
OL
= 5V±10%)
= 2.2V
= 0.8V
= 2.2V
= 0.8V
CE Setup Time
CE Hold Time
Address Setup Time (For Read)
Address Setup Time (For Write)
Address Hold Time (For Read)
Output Data Delay Time (C
Output Data Floating Time
Write Pulse Width
Input Data Setup Time
Input Data Hold Time
WR
CS
RD
CS
(Read Data)
(Write Data)
D0 to D3
D0 to D3
or
or
A0 to A3
WR
RD
CS
CS
CE
Item
(V
V
V
V
V
DD
IH
IL
OH
OL
L
=100pF)
= 3V±10%)
= 0.8 ´ V
= 0.2 ´ V
= 0.8 ´ V
= 0.2 ´ V
t
CES
DD
DD
DD
DD
t
t
AS(RD)
AS(WR)
MIN.
500
500
120
20
20
10
10
60
10
V
DD
=5V±10%
MAX.
120
(V
70
V
V
V
V
t
RR
DD
IH
IL
OH
OL
= 5V±20%)
= 2.4V
= 0.4V
= 2.4V
= 0.4V
t
W
1,000
1,000
MIN.
195
V
20
20
10
10
95
10
DD
=3V±10%
t
DS
t
AH(RD)
Valid
Valid
MAX.
295
95
t
RZ
MIN.
500
500
150
t
V
t
20
20
10
10
75
10
DH
AH(WR)
DD
t
CEH
=5V±20%
V
RP/RF/RS5C62
SS
=0V, Topt=–20 to +70˚C
MAX.
150
75
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
5