Rainbow Electronics MAX16021 - Manual (Page 19)

MAX16016/MAX16020/MAX16021
MAX16021
16
V
CC
CEIN CEOUT OUT
LL
RESET
BATTOK BATTON
5
15
6
TQFN
14
7
13
8
*EP
12 1
11 2
10 3
9 4
BATT
MR
PFI
WDI
RESET
GND
PFO
WDO
MAX16016
10
OUT BATTON
V
CC
WDI
1
8
3
TDFN
+
+
7
RESET
BATT
9
2 4
6
5
GND PFO
MR PFI
*EP
TOP VIEW
Pin Configurations (continued)
MAX16020L
CE
CEIN
GND
RAM
V CC
PFO
BATT
0.1 µF
R1
R2
0.1 µF
0.1 µF
CEOUT
OUT
RESET
ADDRESS
DECODE
RTC
µP
MR
A0–A15
RST
LL NMI
WDI I/O
WDO I/O
SECONDARY
DC VOLTAGE
3.3V
PFI
0.1 µF
(MIN)
V CC
Typical Application Circuit
Low-Power µP Supervisory Circuits with
Battery-Backup Circuit and Chip-Enable Gating
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