Philips Semiconductors
Product specification
On/off logic IC
SAA1305T
SAA1305T
microcontroller
main supply
handbook, full pagewidth
2
I C-bus write alarm timer
2
POWER-OFF
I C-bus write ENABLE-RESET
programmable
time
ON/OFF = LOW (A/D supply is off)
RP = HIGH
ON/OFF = HIGH (A/D supply is on)
CHI = LOW
1 ms
RP = LOW
2
I C-bus read status/old/new register
CHI = HIGH
(1)
Watchdog timer trigger sequence
POWER-ON
MGR212
(1) See Fig.5.
Fig.18 Wake-up via alarm.
handbook, full pagewidth SAA1305T
microcontroller
main supply
input Dx
CHI = LOW
0 to 300 ms
WD = HIGH (LOW)
WD = LOW (HIGH)
RP = HIGH
0 to 300 ms
1 to 20 ms
POWER-OFF
RP = LOW
MGR213
Fig.19 Behaviour after missed I2C-bus read sequence.
23
2004 Jan 15
PANASONIC [ PANASONIC ]
