X5083 Datasheet, PDF (6/20 Pages) Xicor Inc. – CPU Supervisor with 8Kbit SPI EEPROM

X5083
V_TRIP
Adj.
V_P
Adjust
Run
1
8
2
7
3 ^X5083 6
4
5
4.7K
RESET
FIGURE 3. SAMPLE V_TRIP RESET CIRCUIT
µC
SCK
SI
SO
CS
New V_CC Applied =
Old V_CC Applied + Error
V_TRIP Programming
Execute
Reset V_TRIP
Sequence
Set V_CC = V_CC Applied =
Desired V_TRIP
Execute
Set V_TRIP
Sequence
Apply 5V to V_CC
Decrement V_CC
(V_CC = V_CC - 50mV)
New V_CC Applied =
Old V_CC Applied - Error
Execute
Reset V_TRIP
Sequence
NO
RESET pin
goes active?
YES
Error ≤ –Emax
Measured V_TRIP -
Desired V_TRIP
Error ≥ Emax
–Emax < Error < Emax
Emax = Maximum Desired Error
DONE
FIGURE 4. V_TRIP PROGRAMMING SEQUENCE
6
FN8127.2
September 16, 2005