Philips Semiconductors
Controller for power supply
and battery management
Preliminary specification
PCF50603
handbook, full pagewidth
system
state
STANDBY
RSTHC_N
treset = 10 ms
ACTIVE
STANDBY
xxVDD
32 kHz
oscillator
CLK32K
MDB682
Before the supplies are turned on, the internal 32 kHz clock is already stable. After
power up of the IOVDD supply the external clock on pin CLK32K becomes available.
Fig.4 Reset generation timing diagram (STANDBY - ACTIVE - STANDBY transition).
handbook, full pagewidth
system
state
STANDBY
RSTHC_N
SIM activation
treset = 10 ms
ACTIVE
STANDBY
SIM emergency deactivation
xxVDD
32 kHz
oscillator
CLK32K
MDB683
Before the supplies are turned on, the internal 32 kHz clock is already stable. After
power up of the IOVDD supply the external clock on pin CLK32K becomes available.
Fig.5 Reset generation timing diagram (STANDBY - ACTIVE - STANDBY transition).
2003 Oct 31
11