LOW CURRENT CONSUMPTION WATCHDOG TIMER WITH RESET FUNCTION

S-1410/1411 Series

Seiko Instruments Inc.

13



Operation

1. From power-on to reset release

The S-1410/1411 Series initiates the initialization if the VDD pin voltage exceeds the release voltage (

the WDO

________

pin output and the RST

_______

pin output change from "L" to "H" after the operation is performed 4 times.

Output "L" → "H"

Output "L" → "H"

VDD

CPOR

WDO

RST

(S-1411 only)

Figure 21

power supply rising time.

0.000001 0.00001 0.0001

0.001

0.01

0.1

Power supply rising time [s]

0.1

0.01

0.001

0.0001

Figure 22 Power Supply Rising Time Dependency of Initialization Time

VDD

CPOR

Power supply rising time

Figure 23 Initialization Time