参数资料
型号: M41ST87WMX6
厂商: STMICROELECTRONICS
元件分类: 时钟/数据恢复及定时提取
英文描述: 1 TIMER(S), REAL TIME CLOCK, PDSO28
封装: 0.300 INCH, ROHS COMPLIANT, PLASTIC, SOX-28
文件页数: 36/52页
文件大小: 689K
代理商: M41ST87WMX6
M41ST87Y, M41ST87W
Clock operation
Doc ID 9497 Rev 8
3.17
Initial power-on defaults
Note:
All other control bits are undetermined.
Table 13.
Default values
Condition
TR
ST
OF
OFIE
HT(1)
Out
FT
AFE
Initial power-up
0
1
0
1
0
Subsequent power-up (with
battery backup)(2)(3)
UC
0
1
UC
0
0
Condition
ABE
SQWE
SQWOD
PFOD
Watchdog register(4)
Initial power-up
0
1
0
Subsequent power-up (with
battery backup)(2)(3)
0
0
UC
0
Condition
32kE
THS
TEB1 and 2
TCM1 and 2
TPM1 and 2
TDS1 and 2
Initial power-up
1(5)
00
0
Subsequent power-up (with
battery backup)(2)
UC
Condition
TCHI/TCLO1
and 2
CLR1
and 2
TIE1 and 2
CLRPW0
CLRPW1
CLR1EXT
and
CLR2EXT
Initial power-up
0
Subsequent power-up (with
battery backup)(2)
UC
0
UC
1.
When TEBX is set to '1,' the HT bit will not be set on power-down (tamper time-stamp will have precedence).
2.
UC = unchanged.
3.
= V
CC rising; = VCC falling.
4.
WDS, BMB0-BMB4, RB0, RB1.
5.
32 kHz output valid only on VCC.
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