Atmel ATA6264 - Manual (Page 19)

19
4929B–AUTO–01/07
ATA6264 [Preliminary]
Figure 6-2. Block Diagram Power Supply Sequencing
VEVZ
V
VSAT
V
VPERI
Comp
VEVZ
K15GOOD
V
K15
= 3V to 4.15V
(40 mV to 175mV Hysteresis)
Serial interface
(KEY - LATCH)
VSAT
VCP
Comp
VSATGOOD
V
SAT
= 6.77V to 7.2V
V
CORE
- Regulator
(200 mV to 500 mV Hysteresis)
Comp
V
EVZ
V
CP
K15
K30
CP
GEVZ EVZEN
CORESWAP
5V
IREF lost
signal
V
K30
= 3.85V to 5V
(50 mV to 150 mV Hysteresis)
VSAT
driver
SVSAT
EVZ
V
VCORE VCORE
SVCORE
VK30
IP
VEVZ
driver
Comp
K30GOOD
VPERI
driver
Delta
< 2.8V
VPERI
SVPER
IP
V
K30
= 6.1V to 8.1V (ON)
(0.5V to 1V Hysteresis)
Comp
EVZGOOD
V
EVZ
= 7.5V to 9V (ON)
V
EVZ
= 5.5V to 6.2V (OFF)