MAX6916
SPI-Compatible RTC with Microprocessor
Supervisor, Alarm, and NV RAM Controller
6 _______________________________________________________________________________________
Note 1: V
RST
is the reset threshold for V
CC
. See the Ordering Information.
Note 2: All parameters are 100% tested at T
A
= +85°C. Limits over temperature are guaranteed by design and are not production
tested.
Note 3: The SPI serial interface is operational for V
CC
> V
RST
.
Note 4: See the Detailed Description (V
OUT
function).
Note 5: I
CCS
is specified with CS = V
CC
, SCLK = DIN = WDI = CE_IN = GND, DOUT, V
OUT
, CE_OUT, and MR floating. I
BATT
is
specified with WDI = CE_IN = SCLK = DIN = GND, CS = V
CC
, DOUT, V
OUT
, CE_OUT, and MR floating.
Note 6: I
CCA
is specified with SCLK = 4MHz for V
CC
= +5.5V and SCLK = 2MHz for V
CC
= +3.3V and +3.6V. DOUT = OPEN, CS =
GND, DIN = V
CC
, CE_IN = V
CC
, V
OUT
and CE_OUT open, WDI = V
CC
or GND.
Note 7: For OUT switchover to BATT, V
CC
must fall below V
RST
and V
BATT
. For OUT switchover to V
CC
, V
CC
must be above V
RST
or
above V
BATT
.
Note 8: Guaranteed by design. Not subject to production testing.
Note 9: All values are referred to V
IH(MIN)
and V
IL(MAX)
levels.
Typical Operating Characteristics
(V
CC
= 3.3V, V
BATT
= 3V, T
A
= +25°C, unless otherwise noted.)
AC ELECTRICAL CHARACTERISTICS (continued)
(V
CC
= V
CC(MIN)
to V
CC(MAX)
, T
A
= -40°C to +85°C, unless otherwise noted. Typical values are at T
A
= +25°C.) (Note 2)
