DS1689S+T&R Maxim Integrated, DS1689S+T&R Datasheet - Page 28

• Manufacturer Part Number: DS1689S+T&R
• Description: Real Time Clock
• Manufacturer: Maxim Integrated
• Series: DS1689, DS1693r

Specifications of DS1689S+T&R

• Rohs: yes
• Function: Clock, Calendar, NV SRAM Control
• Rtc Bus Interface: Multiplexed
• Date Format: DW
• Time Format: HH
• Rtc Memory Size: 114 B
• Supply Voltage - Max: 5.5 V
• Supply Voltage - Min: 2.7 V
• Maximum Operating Temperature: + 70 C
• Minimum Operating Temperature: 0 C
• Mounting Style: SMD/SMT
• Package / Case: SOIC-28

RTC AC TIMING CHARACTERISTICS—3V
(Over the operating range.)
DS1689/DS1693 BUS TIMING FOR READ CYCLE TO RTC
Cycle Time
Pulse Width, RD/WR Low
Pulse Width, RD/WR High
Input Rise and Fall Time
Chip-Select Setup Time Before WR or RD
Chip-Select Hold Time
Read-Data Hold Time
Write-Data Hold Time
Muxed Address Valid Time to ALE Fall
Muxed Address Hold Time from ALE Fall
RD or WR High Setup to ALE Rise
Pulse Width, ALE High
ALE Low Setup to RD or WR Fall
Output Data Delay Time from RD
Data Setup Time
IRQ Release from RD
CEI to CEO Delay
PARAMETER
SYMBOL
PW
PW
PW
t
t
t
t
t
t
t
t
t
t
t
ASED
t
R
DHW
t
DSW
CYC
t
DHR
AHL
DDR
ASD
CED
ASL
IRD
CH
CS
28 of 36
, t
RWH
RWL
ASH
F
MIN
915
375
450
180
120
180
75
10
90
30
30
20
0
0
TYP
MAX UNITS
120
370
DC
30
20
2
µs
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
NOTES
9