Rainbow Electronics MAX16040 - Manual (Page 18)

MAX16033–MAX16040
Low-Power Battery Backup
Circuits in Small µDFN Packages
18 ______________________________________________________________________________________
GND
CEIN**
PFI
CEOUT**
WDI***
PFO
OUT
A0–A15
I/O
I/O
REAL-
TIME
CLOCK
RESETIN*
R4
R3
ADDITIONAL
DC VOLTAGE
* RESETIN APPLIES TO MAX16035/MAX16039 ONLY.
**CEIN AND CEOUT APPLY TO MAX16033–MAX16036 ONLY.
***WDI APPLIES TO MAX16034/MAX16038 ONLY.
BATT
2.4V TO 5.5V
µP
CMOS
RAM
V CC
0.1µF
ADDRESS
DECODE
MAX16033–
MAX16040
RESET RESET
CE
R2
R1
ADDITIONAL
DC VOLTAGE
0.1µF
Typical Operating Circuit