Rainbow Electronics MAX6900 - Manual (Page 9)

MAX6900
I
2
C-Compatible RTC in a TDFN
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FUNCTION A7 A6 A5 A4 A3 A2 A1 A0 VALUE D7 D6 D5 D4 D3 D2 D1 D0
CLOCK
RAM
RAM 0 1 1 0 0 0 0 0 RD RAM DATA 0 x x x x x x x x
/W
RAM 30 1 1 1 1 1 1 0 RD RAM DATA 30 x x x x x x x x
/W
RAM BURST 1 1 1 1 1 1 1 RD
/W
Table 1. Register Address Definition (continued)
Table 2. Hex Register Address Definition
HEX REGISTER ADDRESS/DESCRIPTION
WRITE
ADDRESS/
COMMAND
BYTE
(HEX)
READ
ADDRESS/
COMMAND
BYTE
(HEX)
DESCRIPTION
POR
CONTENTS
80 81 Seconds 00
82 83 Minutes 00
84 85 Hours 00
86 87 Date 01
88 89 Month 01
8A 8B Day 01
8C 8D Year 70
8E 8F Control 00
92 93 Century 19
96 97 Reserved 07
BE BF Clock Burst N/A
C0 C1 RAM 0 Indeterminate
C2 C3 RAM 1 Indeterminate
C4 C5 RAM 2 Indeterminate
C6 C7 RAM 3 Indeterminate
C8 C9 RAM 4 Indeterminate
CA CB RAM 5 Indeterminate
CC CD RAM 6 Indeterminate
CE CF RAM 7 Indeterminate
Note: POR STATE defines power-on reset state of register contents.