DS1238A Dallas, DS1238A Datasheet - Page 13

• Manufacturer Part Number: DS1238A
• Description: MicroManager
• Manufacturer: Dallas

NOTES:
1. All voltages referenced to ground.
2. Measured with V
3. I
4. I
5. With t
6. V
7. t
8. t
9. All outputs except RST which is 25 A max.
10. All outputs except
11. The
12. I
13.
during normal 5-volt operation.
retention battery supply operation, with a maximum drop of 0.8 volts for commercial, 1.0V for
industrial.
operation. The OSCSEL pin will sink 10 A in normal operation.
ST
REC
CE
CCO1
CCO2
BAT
CCO
maximum must be met to insure data integrity on power loss.
should be active low before the watchdog is disabled (i.e., before the
is the minimum time required before
ST
is measured with V
is the maximum average load which the DS1238A can supply at V
is the maximum average load which the DS1238A can supply through the V
is approximately V
R
= 5 s.
pin will sink 50 A in normal operation. The OSCIN pin will sink 5 A in normal
CCO
RST
,
CEO
,
BAT
BAT
RTV
, PF,
=3.0V.
-0.5V at 1 A load.
, and
ST
, RST,
NMI
which is 25 A min.
CEI
RST
13 of 13
/
CEO
, and
memory access is allowed.
NMI
pin open.
CC
ST
-.3V through the V
input is tristated).
CCO
pin during data
CCO
DS1238A
pin