DS1501YS+ Maxim Integrated, DS1501YS+ Datasheet - Page 5

• Manufacturer Part Number: DS1501YS+
• Description: Real Time Clock
• Manufacturer: Maxim Integrated
• Series: DS1501, DS1511r

Specifications of DS1501YS+

• Rohs: yes
• Function: Clock, Calendar, Alarm, Watchdog Timekeeper
• Rtc Bus Interface: Parallel
• Time Format: HH
• Rtc Memory Size: 256 B
• Supply Voltage - Max: 5.5 V
• Supply Voltage - Min: 4.5 V
• Maximum Operating Temperature: + 70 C
• Minimum Operating Temperature: 0 C
• Mounting Style: SMD/SMT
• Package / Case: SOIC-28
• Part # Aliases: 90-1501Y+S00

Figure 2. Write Cycle Timing, Write-Enable Controlled
Figure 3. Write Cycle Timing, Chip-Enable Controlled
DQ0-DQ7
W E
A0-A4
CE
DQ0–DQ7
WE
CE
A0–A4
t
DATA OUTPUT
AS
t
AS
t
AS
t
AS
VALID
VALID
t
WEZ
t
WC
t
W C
t
WEW
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DATA INPUT
t
DS
DATA INPUT
DS1501/DS1511 Y2KC Watchdog Real-Time Clocks
t
t
AH
DH
t
WR
VALID
DATA INPUT
VALID
DATA INPUT