Philips Semiconductors
Product specification
On/off logic IC
SAA1305T
Scenarios for ON/OFF logic with switched microcontroller supply
5 V continuous
regulator
handbook, full pagewidth
SAA1305T
5 V regulator
microcontroller
RES = LOW
RP = HIGH
200 ms
RES = HIGH
ON/OFF = HIGH
RESET = HIGH
CHI = LOW
6 ms
20 ms
RESET = LOW
RP = LOW
2
I C-bus read status/old/new register
CHI = HIGH
2
I C-bus write reset time/blink/LED status
2
I C-bus write ENABLE-RESET
ON/OFF = LOW
RESET = HIGH
MGR216
Fig.22 Proper first connection on power supply.
SAA1305T
5 V regulator
microcontroller
handbook, full pagewidth
Dx
RP = HIGH
ON/OFF = HIGH
RESET = HIGH
RESET = LOW
6 ms
10 ms
CHI = LOW
RP = LOW
2
I C-bus read status/old/new register
CHI = HIGH
WD = LOW
WD = HIGH
WD = LOW
250 ms
250 ms
MGR217
Fig.23 Switch-on after a valid input change.
2004 Jan 15
25
PANASONIC [ PANASONIC ]
