M41ST87WMX6F STMICROELECTRONICS [STMicroelectronics], M41ST87WMX6F Datasheet - Page 33
M41ST87WMX6F
Manufacturer Part Number
M41ST87WMX6F
Description
5.0 V and 3.3/3.0 V secure serial RTC and NVRAM supervisor with tamper detection and 128 bytes of clearable NVRAM
Manufacturer
STMICROELECTRONICS [STMicroelectronics]
Datasheet
1.M41ST87WMX6F.pdf
(52 pages)
- Current page: 33 of 52
- Download datasheet (696Kb)
M41ST87Y, M41ST87W
Figure 22. Crystal accuracy across temperature
Figure 23. Calibration waveform
3.3
NORMAL
POSITIVE
CALIBRATION
NEGATIVE
CALIBRATION
Frequency (ppm)
–100
–120
–140
–160
–20
–40
–60
–80
Setting alarm clock registers
Address locations 0Ah-0Eh contain the alarm settings. The alarm can be configured to go
off at a prescribed time on a specific month, date, hour, minute, or second, or repeat every
year, month, day, hour, minute, or second. It can also be programmed to go off while the
M41ST87Y/W is in the battery back-up to serve as a system wake-up call.
Bits RPT5–RPT1 put the alarm in the repeat mode of operation.
the possible configurations. Codes not listed in the table default to the once per second
mode to quickly alert the user of an incorrect alarm setting.
When the clock information matches the alarm clock settings based on the match criteria
defined by RPT5–RPT1, the AF (alarm flag) is set. If AFE (alarm flag enable) is also set, the
20
0
–40
–30
–20
–10
0
Doc ID 9497 Rev 8
10
Temperature °C
F
K
= –0.036 ppm/°C
= K x (T – T
20
T
30
O
= 25°C ± 5°C
O
)
2
40
2
± 0.006 ppm/°C
50
60
Table 8 on page 34
2
70
80
Clock operation
AI07888
AI00594B
shows
33/52
Related parts for M41ST87WMX6F
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
5.0, 3.3, Or 3.0v, 1280 Bit 160 X8 Secure Serial Rtc And Nvram Supervisor With Tamper Detection
Manufacturer:
STMicroelectronics
Datasheet:
Part Number:
Description:
STMicroelectronics [RIPPLE-CARRY BINARY COUNTER/DIVIDERS]
Manufacturer:
STMicroelectronics
Datasheet:
Part Number:
Description:
STMicroelectronics [LIQUID-CRYSTAL DISPLAY DRIVERS]
Manufacturer:
STMicroelectronics
Datasheet:
Part Number:
Description:
BOARD EVAL FOR MEMS SENSORS
Manufacturer:
STMicroelectronics
Datasheet:
Part Number:
Description:
NPN TRANSISTOR POWER MODULE
Manufacturer:
STMicroelectronics
Datasheet:
Part Number:
Description:
TURBOSWITCH ULTRA-FAST HIGH VOLTAGE DIODE
Manufacturer:
STMicroelectronics
Datasheet:
Part Number:
Description:
Manufacturer:
STMicroelectronics
Datasheet:
Part Number:
Description:
DIODE / SCR MODULE
Manufacturer:
STMicroelectronics
Datasheet:
Part Number:
Description:
DIODE / SCR MODULE
Manufacturer:
STMicroelectronics
Datasheet:
Part Number:
Description:
Search -----> STE16N100
Manufacturer:
STMicroelectronics
Datasheet:
Part Number:
Description:
Search ---> STE53NA50
Manufacturer:
STMicroelectronics
Datasheet:
Part Number:
Description:
NPN Transistor Power Module
Manufacturer:
STMicroelectronics
Datasheet: