DS1238A Dallas, DS1238A Datasheet - Page 5

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

OSCILLATOR CONTROLS Table 1
Note that the OSCIN and OSCSEL pins are tri-stated when V
POWER MONITOR, WATCHDOG TIMER, AND PUSHBUTTON RESET Figure 3
PUSHBUTTON RESET TIMING Figure 4
External
Internal
Hi/Open
Ext Cap
OSCIN
Ext Clk
Low
OSCSEL
Hi/Open
Hi/Open
Low
Low
Following a Reset
First Period
Watchdog Timeout Period (typ)
2.2
20480 Clks
47
2.7 sec
2.7 sec
sec
pf
5 of 13
X Cpf
CC
Other Timeout
is below V
5120 Clocks
550
47
170 ms
2.7 sec
pf
ms
X Cpf
BAT
.
Reset Active
69
47
Duration
641 Clks
85 ms
85 ms
ms
pf
X Cpf
DS1238A