DS1302 Maxim Integrated Products, DS1302 Datasheet - Page 9

• Manufacturer Part Number: DS1302
• Description: IC TIMEKEEPER T-CHARGE 8-DIP
• Manufacturer: Maxim Integrated Products
• Type: Clock/Calendar/Trickle-Chargerr

Specifications of DS1302

• Memory Size: 31B
• Time Format: HH:MM:SS (12/24 hr)
• Date Format: YY-MM-DD-dd
• Interface: 3-Wire Serial
• Voltage - Supply: 2 V ~ 5.5 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Through Hole
• Package / Case: 8-DIP (0.300", 7.62mm)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Table 3. Register Address/Definition
RTC
CLOCK BURST
RAM
RAM BURST
Figure 5. Programmable Trickle Charger
READ
8Dh
C1h
C3h
C5h
FDh
8Bh
8Fh
FFh
81h
83h
85h
87h
89h
91h
BFh
V
.
.
.
TRICKLE CHARGE REGISTER (90h write, 91h read)
CC2
TCS3
Bit 7
NOTE: ONLY 1010b ENABLES CHARGER
WRITE
8Ch
C0h
C2h
C4h
FCh
8Ah
8Eh
FEh
80h
82h
84h
86h
88h
90h
BEh
.
.
.
TCS2
Bit 6
1 0F 16 SELECT
12/ 24
BIT 7
TCS
WP
CH
TCS1
0
0
0
Bit 5
BIT 6
TCS
TCS0
0
0
0
0
0
Bit 4
10 Year
10 Seconds
10 Minutes
AM /PM
BIT 5
TCS
Bit 3
DS1
10
0
0
0
10 Date
SELECT
1 OF 2
Month
Bit 2
DS0
BIT 4
Hour
TCS
10
0
0
ROUT1
9 of 13
Bit 1
BIT 3
DS
0
0
SELECT
1 OF 3
ROUT0
Bit 0
BIT 2
DS
0
Seconds
Minutes
Month
Hour
Year
Date
BIT 1
Day
RS
TCS
DS
ROUT
0
0-1
0-3
= DIODE SELECT
0-1
= TRICKLE CHARGER SELECT
BIT 0
= RESISTOR SELECT
RS
0
1–12/0–23
RANGE
00–59
00–59
00–99
00-FFh
00-FFh
00-FFh
00-FFh
1–31
1–12
1–7
2K
4k
8k
R1
R2
—
—
R3
.
.
.
Ω
Ω
Ω
V
CC1