CME8000-BUS-GS-01 C-Max, CME8000-BUS-GS-01 Datasheet - Page 6

• Manufacturer Part Number: CME8000-BUS-GS-01
• Description: MODULE BUS SER W/IP65 CASING&ANT
• Manufacturer: C-Max

Specifications of CME8000-BUS-GS-01

• Frequency: 40kHz ~ 120kHz
• Sensitivity: -115dBm
• Modulation Or Protocol: UTC - Universal Time Code
• Applications: Radio Controlled Time
• Current - Receiving: 2mA
• Data Interface: PCB, Surface Mount
• Antenna Connector: On-Board, Wire Antenna
• Voltage - Supply: 2.7 V ~ 5 V
• Operating Temperature: -40°C ~ 85°C
• Package / Case: Module
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Features: -
• Memory Size: -
• Data Rate - Maximum: -

Data Sheet
3. Description of Functions
3.1
Let Signal DST (or DST from date+month calculation) = A
Let RTC_SET_HR DST bit = B
Let RD_Time DST bit = C
Then the following relationship is applied.
A B
1 1
0 1
1 0
0 0
That is, if RTC_SET_HR DST bit is 0, RD_Time DST bit shows the signal DST (or calculation DST) status.
If RTC_SET_HR DST bit is 1, RD_Time DST bit shows the overidden DST status which is manually inverted by
the user.
CME8000-
SPEC No.
BUS
RTC Commands
C
0
1
1
0
3.1.1
3.1.2
3.1.3
3.1.4
3.1.5
3.1.6
CME8000-BUS
RTC_SET_SEC (Default : 00h)
This command sets the second data in the RTC. SER is a bit (as 1) which is returned to the
master if the set second is not within 0 to 59. In this case, the previous second data will be
restored.
S1 to S40 represents BCD values of the second. Range is 00h to 59h
RTC_SET_MIN (Default : 00h)
This command sets the minute data in the RTC. MiER is a bit (as 1) which is returned to the
master if the set minute is not within 0 to 59. In this case, the previous minute data will be
restored.
Min1 to Min40 represents BCD values of the minute. Range is 00h to 59h
RTC_SET_HR (Default: 00h)
This command sets the hour date in 24 h system in the RTC. HrER is a bit (as 1) which is
returned to the master if the set minute is not within 0 to 23. In this case, the previous hour data
will be restored.
H1 to H20 represents BCD values of the hour. Range is 00h to 23h
The bit 7 represents the DST status to be manually set by the user with the following definition:
RTC_SET_DATE (Default: 01h)
This command sets the date of the month in the RTC.
D1 to D20 represent BCD values of the date. Range is 01h to 31h.
DER is a bit (as 1) which is returned to the master if the set date does not comply with the
month and year inside the RTC. In this case, the date is automatically reset to the last date of
the set month and year.
RTC_SET_MTH (Default: 01h)
This command sets the month data in the RTC.
Mo1 to Mo10 represent BCD value of the month. Range is 01h to 12h.
MER is a bit (as 1) which is returned to the master if the set month does not comply with the
date inside the RTC. In this case, the date is automatically set to the last date of the set month
and year.
RTC_SET_YR (Default: 00h)
This command sets the last two digits of the year data in the RTC
Y1 to Y80 represent BCD value of the year. Range is 00h to 99h.
If the set year does not comply with the date and month inside the RTC, the date is
automatically set to the last date of the set month and year.
Revision
B6
26.07.05
State
C-MAX printed
26.07.2005
English
Version
C-MAX
6 of 18
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