DS12887 Maxim, DS12887 Datasheet - Page 4

• Manufacturer Part Number: DS12887
• Description: The DS12885, DS12887, and DS12C887 real-time clocks (RTCs) are designed to be direct replacements for the DS1285 and DS1287
• Manufacturer: Maxim

Real-Time Clocks
4
_____________________________________________________________________
AD0–AD7
WRITE
R/W
AS
DS
CS
AD0–AD7
AD0–AD7
WRITE
READ
R/ W
AS
DS
CS
t
ASD
t
t
ASD
ASD
t
ASL
PW
ASH
PW
PW
EL
PW
ASH
EL
t
ASL
t
CS
t
t
CS
ASED
t
AHL
t
t
t
AHL
ASED
CYC
t
CYC
Motorola Bus Read/Write Timing
t
RWS
t
DDR
PW
PW
t
DSW
EH
EH
t
DSW
Intel Bus Write Timing
t
t
CH
RWH
t
t
DHW
DHR
t
t
CH
DHW