DS32C35-33IND# Maxim Integrated Products, DS32C35-33IND# Datasheet - Page 16

• Manufacturer Part Number: DS32C35-33IND#
• Description: IC RTC W/TCXO 20-SOIC
• Manufacturer: Maxim Integrated Products
• Type: Clock/Calendar/TCXO/Crystal/FRAMr

Specifications of DS32C35-33IND#

• Memory Size: 64K (8K x 8)
• Time Format: HH:MM:SS (12/24 hr)
• Date Format: YY-MM-DD-dd
• Interface: I²C, 2-Wire Serial
• Voltage - Supply: 2.7 V ~ 3.63 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 20-SOIC (7.5mm Width)
• Function: Clock/Calendar
• Rtc Memory Size: 8192 B
• Supply Voltage (max): 3.63 V
• Supply Voltage (min): 2.7 V
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• Rtc Bus Interface: I2C
• Supply Current: 260 uA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Temperature is represented as a 10-bit code with a res-
olution of +0.25°C and is accessible at location 11h
and 12h. The temperature is encoded in two’s comple-
ment format. The upper 8 bits are at location 11h, and
the lower 2 bits are in the upper nibble at location 12h.
Upon power reset, the registers are set to a default
Accurate I
TCXO/Crystal/FRAM
Note: Unless otherwise specified, the state of the registers is not defined when power is first applied.
Note: Unless otherwise specified, the state of the registers is not defined when power is first applied.
16
ADDRESS
ADDRESS
1FFFh
000h
7FFh
000h
BIT 7
BIT 7
Data
Sign
____________________________________________________________________
:
:
Temperature Registers (11h–12h)
BIT 7
BIT 7
D7
D7
D7
D7
:
:
BIT 6
BIT 6
Data
Data
2
BIT 6
BIT 6
C RTC with Integrated
D6
D6
D6
D6
:
:
BIT 5
BIT 5
Data
0
BIT 5
BIT 5
D5
D5
D5
D5
:
:
BIT 4
BIT 4
Data
BIT 4
BIT 4
0
D4
D4
D4
D4
:
:
BIT 3
BIT 3
temperature of 0°C and the controller starts a tempera-
ture conversion. New temperature readings are stored
in this register.
During a multibyte access, the address pointer wraps
around to location 00h when it reaches the end of the
register space.
D3
D3
D3
D3
:
:
Temperature Register (Lower Byte) (12h)
BIT 3
BIT 3
Temperature Register (Upper Byte) (11h)
Data
0
BIT 2
BIT 2
D2
D2
D2
D2
:
:
BIT 2
BIT 2
Data
0
BIT 1
BIT 1
D1
D1
D1
D1
:
DS32B35 FRAM Register Map
DS32C35 FRAM Register Map
:
FRAM Address Map
BIT 1
BIT 1
Data
BIT 0
BIT 0
0
D0
D0
D0
D0
:
:
RANGE
RANGE
00–FF
00–FF
00–FF
00–FF
BIT 0
BIT 0
Data
0
:
: