X5643 INTERSIL [Intersil Corporation], X5643 Datasheet - Page 4

• Manufacturer Part Number: X5643
• Description: CPU Supervisor with 64Kbit SPI EEPROM
• Manufacturer: INTERSIL [Intersil Corporation]

Figure 3. V
TRIP
Programming Sequence Flow Chart
Emax = Maximum Desired Error
Old V
New V
CC
4
CC
Applied + Error
Applied =
Error ≥ Emax
NO
Set V
X5643, X5645
(V
V
Measured V
Apply 5V to V
TRIP
Decrement V
CC
Desired V
CC
Desired V
goes active?
Reset V
RESET pin
Sequence
Sequence
Set V
= V
Execute
Execute
= V
DONE
Programming
CC
CC
TRIP
YES
Error < Emax
TRIP
- 10mV)
Applied =
TRIP
TRIP
TRIP
CC
CC
-
Error > Emax
Old V
New V
CC
Reset V
Sequence
Execute
CC
Applied - Error
Applied =
TRIP
July 18, 2005
FN8135.1