WAKE-UP TIMER IC

PROGRAMMABLE WAKE-UP TIMER IC

S-35710 Series

13

Figure 16 and Figure 17 show the status transition diagrams about hand shake time-out operation.

Timing status

INT pin = "H"

Timing stop status

INT pin = "H"

Timing status

INT pin = "H"

Timing stop status

INT pin = "L"

Initial status

Wake-up time register = "0 h"

Timer = "0 h"

INT pin = "H"

Timer reset

Timer = "0 h"

INT pin = "H"

Read mode

Write

Write

Write

Read

Read

Read

Power-on

RST pin = "L"

RST pin = "H"

Count up every

second

RST pin = "L"

RST pin = "L"

RST pin = "L"

Write

Read

Timer = "FFFFFF h"

Timer

= Wake-up time register

Automatic

migration

Count up every

second

Timer reset

Wake-up time register = "0 h"

Timer = "0 h"

INT pin = "L"

Write mode

RST pin = "H"

Read

Write

RST pin = "L"

Remark Write: Wake-up time register write command

Read: Time register read command

Write

Figure 16 Status Transition Diagram of Handshake Time-out (S-35710C01I / Nch Open-drain Output)