MCP79402T-I/ST Microchip Technology, MCP79402T-I/ST Datasheet - Page 2

• Manufacturer Part Number: MCP79402T-I/ST
• Description: Real Time Clock I2C GP RTCC 64B SRAM EUI-64
• Manufacturer: Microchip Technology
• Series: -r
• Type: Clock/Calendarr

Specifications of MCP79402T-I/ST

• Features: Alarm, Leap Year, NVSRAM, Square Wave Output, Unique ID
• Memory Size: 64B
• Time Format: HH:MM:SS (12/24 hr)
• Date Format: YY-MM-DD-dd
• Interface: I²C
• Voltage - Supply: 1.8 V ~ 5.5 V
• Voltage - Supply, Battery: 1.3 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 8-TSSOP (0.173", 4.40mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

MCP7940X
FIGURE 1-1:
FIGURE 1-2:
DS25009B-page 2
V
V
X1
X2
BAT
SS
Note 1: A 100nF Capacitor should be placed as close to the Vcc pin on the device
as possible.
D1
BAT
V
R4
BAT
CX1
CX2
Switch
Time-Stamp/
TYPICAL OPERATING
CIRCUIT
SCHEMATIC
Alarms
C2
RTCC
X1
SRAM
ID
X1
X2
V
V
I
2
BAT
SS
C™
MFP
SDA
V
SCL
CC
MFP
V
SDA
SCL
CC
SYSTEM V
CC
Suggested Values:
C1
CX1, CX2
C2
R1
R2,3
R4
D1
BAT
X1
C1
Note 1
32.768 kHz Crystal
Backup Supply
(See Text)
See Text
Schottky
100nF
100pF
2.2K
10K
1K
R1
R2
 2011 Microchip Technology Inc.
R3
MFP
SCL
SDA