M41ST85WMX6 STMicroelectronics, M41ST85WMX6 Datasheet - Page 22

• Manufacturer Part Number: M41ST85WMX6
• Description: IC RTC 3.0V NVRAM 28SOIC
• Manufacturer: STMicroelectronics
• Type: Clock/Calendar/Supervisorr

Specifications of M41ST85WMX6

• Memory Size: 64B
• Time Format: HH:MM:SS:hh (24 hr)
• Date Format: YY-MM-DD-dd
• Interface: I²C, 2-Wire Serial
• Voltage - Supply: 2.7 V ~ 3.6 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 28-SOIC, 28-SOH (8.48mm Width)
• Function: Clock/Calendar/Supervisor/Alarm
• Rtc Memory Size: 64 Byte
• Supply Voltage (max): 3.6 V
• Supply Voltage (min): 2.7 V
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• Rtc Bus Interface: Serial (2-Wire, I2C)
• Memory Configuration: 64 X 8
• Nvram Features: RTC, Internal Battery, XTAL
• Interface Type: I2C, Serial, 2-Wire
• Supply Voltage Range: 2.7V To 3.6V
• Memory Case Style: SO
• No. Of Pins: 28
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-2805-5

M41ST85Y, M41ST85W
t
Bit D7 of Clock Register 04h contains the t
(TR). t
the deselect time after V
lows for a voltage settling time before WRITEs
may again be performed to the device after a pow-
er-down condition. The t
set the length of this deselect time as defined by
Table 6., page
Table 6. t
Note: 1. Default Setting
Table 7. Default Values
Note: 1. WDS, BMB0-BMB4, RB0, RB1.
22/34
rec
Initial Power-up
Subsequent Power-up (with
battery back-up)
Bit
2. State of other control bits undefined.
3. UC = Unchanged
t
rec
rec
Bit (TR)
rec
0
0
1
refers to the automatic continuation of
Condition
Definitions
(2)
22.
(3)
rec
CC
STOP Bit (ST)
Bit will allow the user to
reaches V
X
0
1
UC
TR
0
PFD
UC
ST
1
. This al-
rec
Bit
HT
1
1
Min
96
40
50
Initial Power-on Defaults
Upon initial application of power to the device, the
following register bits are set to a '0' state: Watch-
dog Register, FT, AFE, ABE, SQWE, and TR. The
following bits are set to a '1' state: ST, OUT, and
HT (see
Out
UC
1
t
rec
Time
FT
Table 7., page
0
0
AFE
200
0
0
2000
Max
98
(1)
ABE
0
0
22).
SQWE
0
0
Units
WATCHDOG
ms
ms
Register
µs
0
0
(1)