ICM7170 Intersil Corporation, ICM7170 Datasheet - Page 5

• Manufacturer Part Number: ICM7170
• Description: Microprocessor-compatible, Real-time Clock
• Manufacturer: Intersil Corporation

Timing Diagrams
A0 - A4, CS
A0 - A4, CS
A0 - A4, D0 - D7, CS
D0 - D7
D0 - D7
RD
WR
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ALE
RD
FIGURE 2. WRITE CYCLE TIMING FOR NON-MULTIPLEXED BUS (ALE = V
FIGURE 1. READ CYCLE TIMING FOR NON-MULTIPLEXED BUS (ALE = V
FIGURE 3. READ CYCLE TIMING FOR MULTIPLEXED BUS (WR = V
t
ADDRESS VALID, CS LOW
AS
t
AD
t
LL
t
t
AS
AL
t
ACC
ADDRESS VALID, CS LOW
ADDRESS VALID, CS LOW
t
t
RD
DW
ICM7170
t
WL
INPUT DATA VALID
12-9
t
LA
t
CYC
t
ACC
OUTPUT DATA VALID
t
CYC
t
RD
t
WA
OUTPUT DATA VALID
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t
WD
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t
RX
t
IH
AR
IH
, WR = V
IH
, RD = V
t
CYC
)
t
AR
IH
IH
)
)