R
A3024
Status Words
Status 0 - Address 00 Hex
7 6 5 4 3 2 1 0
Read / Write bits
0 - disabled / 24 hour
1 - enabled / 12 hour
frequency tuning mode
pulse enable / disable
alarm enable / disable
timer enable / disable
24 hour / 12 hour
1)
time set lock
test bit 0
test bit 1
Table 6
Status 1 - Address 01 Hex
7 6 5 4 3 2 1 0
Read / Write bits
0 - masked / no event
1 - unmasked / event
pulse mask
alarm mask
timer mask
reserved
pulse flag
alarm flag
timer flag
reserved
Table 7
Status 2 - Address 02 Hex
7 6 5 4 3 2 1 0
Read / Write bits
0 - disabled
1 - enabled
pulse every 10 ms
pulse every 100 ms
pulse every second
pulse every minute
initialisation bit
SYNC 50 Hz
SYNC second
SYNC minute
Table 8
1)
Address Command Space
This space contains the three commands used for carrying out
the transfers between the Time and Date Register and / or the
Timer Registers and the reserved clock and timer area.
RAM Map
Address
Dec Hex
Parameter
Data Space
Status
00
00
status 0
01
01
status 1
02
02
status 2
Special purpose
16
10
digital trimming
Clock
32
20
1/100 second
33
21
seconds
34
22
minutes
1)
35
23
hours
36
24
date
37
25
month
38
26
year
39
27
week day
40
28
week number
Alarm
1/100 second
48
30
49
31
seconds
50
32
minutes
1) 2)
51
33
hours
date
52
34
Timer
64
40
1/100 second
65
41
seconds
66
42
minutes
67
43
hours
User RAM
50
user RAM, byte 0
80
51
user RAM, byte 1
81
52
user RAM, byte 2
82
53
user RAM, byte 3
83
54
user RAM, byte 4
84
55
user RAM, byte 5
85
56
user RAM, byte 6
86
57
user RAM, byte 7
87
58
user RAM, byte 8
88
59
user RAM, byte 9
89
5A user RAM, byte 10
90
5B user RAM, byte 11
91
5C user RAM, byte 12
92
5D user RAM, byte 13
93
5E user RAM, byte 14
94
5F
user RAM, byte 15
95
Address Comand Space
240 F0
clock and timer transfer
241 F1
clock transfer
242 F2
timer transfer
Range
0-255
00-99
00-59
00-59
00-23
01-31
01-12
00-99
01-07
00-53
00-99
00-59
00-59
00-23
01-31
00-99
00-59
00-59
00-23
The MSB (bit 7) of the hours byte (addr. 23 hex for the clock
and 33 hex for the alarm) are used as AM/PM indicators in the
12 hour time data format and reading of the hours byte
must be preceded by masking of the AM/PM bit. A set AM/PM
bit indicates PM. In the 24 hour time data format the bit will
always be zero.
2)
The alarm hours, addr. 33 hex, must always be rewritten after a
change between 12 and 24 hour modes.
Table 9
9
EMMICRO [ EM MICROELECTRONIC - MARIN SA ]
