HT1382_1105 HOLTEK [Holtek Semiconductor Inc], HT1382_1105 Datasheet - Page 13

• Manufacturer Part Number: HT1382_1105
• Description: I2C/3-Wire Real Time Clock
• Manufacturer: HOLTEK [Holtek Semiconductor Inc]

HT1382
I
Rev. 1.40
2
C/3-Wire Real Time Clock
FOUT(Hz)
32768
4096
1024
EEPROM Busy Status Bit - EB
Output Enable On Battery Mode Bit - OEOBM
Low Power Mode Bit - LPM
Frequency Output Bits - FO3~FO0
1/16
1/32
1/2
1/4
1/8
64
32
16
8
4
2
1
This bit is set to 1 when a write operation to the EEPROM has not completed. When this bit is set to
write has finished, this bit will be cleared to 0 and the user can read data from the EEPROM or write
data to the EEPROM.
This bit enables/disables the IRQ/FOUT pin in the battery mode. When the OEOBM bit is set to 1 ,
the IRQ/FOUT pin is disabled in the battery mode and the frequency output and alarm function are
disabled. When the OEOBM bit is cleared to 0 , the IRQ/FOUT pin is enabled in the battery mode.
This bit enables/disables the Low Power Mode. When the LPM bit is cleared to 0 , the device will be
in the normal mode and will use the V
set to 1 , the device is in the Low Power Mode and uses the V
These bits enable/disable the frequency output function and selects the output frequency at the FOUT
pin. The frequency selection table is shown below. It overrides the alarm mode. The 1, 1/2, 1/4, 1/8,
1/16, 1/32 frequency outputs are compensated.
1 , reading data from the EEPROM or writing data to the EEPROM is invalid. After an EEPROM
FO3
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
BAT
FO2
supply when V
13
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
DD
< V
BAT
FO1
BAT
and V
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
supply when V
DD
< V
COMP
. When the LPM bit is
DD
< V
FO0
May 27, 2011
BAT
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
.