UPD4990AG Renesas Electronics America, UPD4990AG Datasheet - Page 14

• Manufacturer Part Number: UPD4990AG
• Manufacturer: Renesas Electronics America

Specifications of UPD4990AG

• Lead Free Status / RoHS Status: Supplier Unconfirmed

TIMING DIAGRAM FOR SETTING COMMANDS (C
12
V
Note: A mode is latched by STB and held until another mode in the same group is set.
DD
NEW COMMAND
VALID
V
SS
= 2.0 V
C
CS
STB
CLK
2
,C
1
,C
0
CAN CHANGE
Other than time read mode
OLD MODE
OLD MODE
Time read mode
V
V
V
t
t
t
t
t
t
IH
V
IL
IL
SU
HLD
STB
d1
d2
S-C
IH
= 1 s MIN.
= 1 s MIN.
= 1 s MIN.
= 1 s MAX. (Other than time read mode)
= 20 s MAX. (Time read mode)
= 1 s MIN.
V
V
t
t
t
IH
IL
STABLE
S-C
SU
SU
Figure 3.
t
STB
t
d1
0
, C
t
t
t
t
d2
HLD
HLD
1
S-C
, C
2
NEW MODE
)
CAN CHANGE
V
V
V
IH
IH
IL
NEW MODE
PD4990A