Rainbow Electronics DS1687 - Manual (Page 23)

DS1685/DS1687
23 of 38
Figure 4. DS1685/DS1687 EXTENDED REGISTER BANK DEFINITION
MSB
BANK 0 DV0
= 0 LSB MSB
BANK 1 DV0 =
1 LSB
00 00
0D
TIMEKEEPING AND CONTROL
0D
TIMEKEEPING AND CONTROL
0E 0E
3F
50 BYTES-USER RAM
3F
50 BYTES-USER RAM
40 MODEL NUMBER BYTE
41 1ST BYTE SERIAL NUMBER
42 2ND BYTE SERIAL NUMBER
43 3RD BYTE SERIAL NUMBER
44 4TH BYTE SERIAL NUMBER
45 5TH BYTE SERIAL NUMBBER
46 6TH BYTE SERIAL NUMBER
47 CRC BYTE
48 CENTURY BYTE
49 DATE ALARM
4A EXTENDED CONTROL REG 4A
4B EXTENDED CONTROL REG 4B
4C RESERVED
4D RESERVED
4E RTC ADDRESS-2
4F RTC ADDRESS-3
50 EXTENDED RAM ADDRESS
51 RESERVED
52 RESERVED
53 EXTENDED RAM DATA PORT
54
RESERVED
7F
64 BYTES-USER RAM
7F
EXTENDED
RAM
128 x 8