SAA1305T Datasheet, PDF (21/32 Pages) Panasonic Semiconductor – On/off logic IC

Philips Semiconductors
On/off logic IC
Scenarios for ON/OFF logic with microcontroller in power-down state
Product specification
SAA1305T
handbook, full page⁵w^Vidt^ch^ontinuous
regulator
RES = LOW
220 ms (hardware specific)
RES = HIGH
SAA1305T
RP = HIGH
microcontroller
ON/OFF = HIGH (A/D supply)
CHI = LOW
RP = LOW
I²C-bus read status/old/new register
CHI = HIGH
I²C-bus write reset time/blink/LED status
I²C-bus write ENABLE-RESET
20 ms
MGR208
Fig.14 Proper first connection on power supply.
handbook, full pagewidtShAA1305T
microcontroller
Dx
RP = HIGH
1 ms
ON/OFF = HIGH
CHI = LOW
RP = LOW
I²C-bus read status/old/new register
CHI = HIGH
250 ms
250 ms
WD = LOW
WD = HIGH
WD = LOW
POWER-ON
main supply
MGR209
2004 Jan 15
Fig.15 Switch-on after a valid input change.
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