RV-8564 Datasheet, PDF (10/40 Pages) MICORO CRYSTAL SWITZERLAND – I2C-Bus Interface Real Time Clock

Micro Crystal
Real Time Clock / Calendar Module
RV-8564
8.2.2.CONTROL / STATUS 2 (address 01h…bits description)
Address
01h
Function
Control / Status 2
Bit 7
N
Bit 6
N
Bit 5
N
Bit 4
TI/TP
Bit 3
AF
Bit 2
TF
Bit 1
AIE
Bit 0
TIE
Bit
7 to 5
4
3
2
1
0
Symbol
N
TI/TP
AF
TF
AIE
TIE
Value
000²⁾
0¹⁾
1
0¹⁾
1
0¹⁾
1
0¹⁾
1
0¹⁾
1
Description
Default value
INT is active when TF is active (subject to the status
of TIE)
INT pulses active according to 9.1.3. (subject to the
status of TIE)
Remark: if AF and AIE are active then INT will be
permanently active
Alarm flag inactive
Alarm flag active
Timer flag inactive
Timer flag active
Alarm interrupt disabled
Alarm interrupt enabled
Timer interrupt disabled
Timer interrupt enabled
Reference
See sections 8.6.
and 9.1.
See section 9.1.
See section 9.1.
See section 9.1.
See section 9.1.
1) _{Default value.}
2) _{Bits labeled as “N” should always be written with logic 0.}
8.3. TIME AND DATE REGISTERS
8.3.1.SECONDS (address 02h…bits description)
Address
02h
Function
Seconds
Bit 7
VL
Bit 6
40
Bit 5
20
Bit 4
10
Bit 3
8
Bit 2
4
Bit 1
2
Bit 0
1
Bit
7
6 to 0
Symbol
VL
Seconds
Value
0
1¹⁾
0 to 59
Description
Clock integrity is guaranteed
Integrity of the clock information is not guaranteed
This register holds the current seconds coded in BCD format
1) _{Startup value.}
8.3.2.MINUTES (address 03h…bits description)
Address
03h
Function
Minutes
Bit 7
X
Bit 6
40
Bit 5
20
Bit 4
10
Bit 3
8
Bit 2
4
Bit 1
2
Bit 0
1
Bit
7
6 to 0
Symbol
X
Minutes
Value
-
0 to 59
Description
Unused
This register holds the current minutes coded in BCD format
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