DS1236 DALLAS, DS1236 Datasheet - Page 19

• Manufacturer Part Number: DS1236
• Description: MicroManager Chip
• Manufacturer: DALLAS

CAPACITANCE
NOTES:
1. All voltages referenced to ground. A 0.1 F capacitor is recommended between V
2. Measured with V
3. I
4. I
5. With t
6. V
7. Sleep mode is not invoked.
8. Sleep mode is invoked.
9. t
10. t
11. IN input is less than V
12. All outputs except RST which is 25 A maximum.
13. All outputs except
14. Pulse width of
15. IN pin greater than V
16. IN pin less than V
17.
18. The WC/
19.
PARAMETER
Input Capacitance
Output Capacitance
during normal 5-volt operation.
retention battery supply operation, with a maximum drop of 0.8 volts.
V
return to a high.
sleep mode.
CEI
ST
REC
CE
CCO1
CCO2
amps to switch states. The
CCO
TP
maximum must be met to ensure data integrity on power loss.
should be active low before the watchdog is disabled (i.e., before the
for a period longer than t
is the minimum time required before
low.
is the maximum average load which the DS1236 can supply at V
is the maximum average load which the DS1236 can supply through the V
is approximately V
R
= 5 s.
SC
pin contains an internal latch which drives back on to the pin. This latch requires 200
NMI
CCO
TP
RST
requires that the IN pin remain below V
when V
,
TP
CEO
TP
when V
and
BAT
but V
, PF,
-0.5V at 1 A load.
CC
ST
NMI
IPD
CC
supply rises to V
CC
pin will sink 50 amps in normal operation and 1 amp in the
ST
and before the t
greater than V
SYMBOL
which is 25 A minimum.
supply rises to V
,
C
PBRST
C
OUT
IN
CEI
, RST,
19 of 19
/
CEO
CCTP
NMI
BAT
MIN
RST
BAT
.
.
period has elapsed, the
memory access is allowed.
. Example: IN tied to GND.
, and
TP
TYP
NMI
. If the IN pin returns to a level above
pin open. I
CC
-0.3V through the V
MAX
ST
5
7
NMI
input is tristated).
BAT
CCO
pin will immediately
specified at 25 C.
CC
UNITS
pin during data
and GND.
pF
pF
(t
A
=25 C)
CCO
NOTES
DS1236
pin