M41T00M6E STMicroelectronics, M41T00M6E Datasheet - Page 4

• Manufacturer Part Number: M41T00M6E
• Description: IC RTC SERIAL 8SOIC
• Manufacturer: STMicroelectronics
• Type: Clock/Calendar/NVSRAMr

Specifications of M41T00M6E

• Memory Size: 8B
• Time Format: HH:MM:SS (24 hr)
• Date Format: YY-MM-DD-dd
• Interface: I²C, 2-Wire Serial
• Voltage - Supply: 2 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (3.9mm Width)
• Function: Clock/Calendar/Battery Backup
• Rtc Memory Size: 8 Byte
• Supply Voltage (max): 5.5 V
• Supply Voltage (min): 2 V
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• Rtc Bus Interface: Serial (2-Wire, I2C)
• Nvram Features: RTC, Internal Battery, XTAL
• Interface Type: I2C, Serial
• Supply Voltage Range: 2V To 5.5V
• Memory Case Style: SOIC
• No. Of Pins: 8
• Operating Temperature Range: -40°C To
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: 497-2810-5; M41T00M6

M41T00
SUMMARY DESCRIPTION
The M41T00 TIMEKEEPER
Serial TIMEKEEPER with a built-in 32.768kHz os-
cillator (external crystal controlled). Eight bytes of
the RAM are used for the clock/calendar function
and are configured in binary coded decimal (BCD)
format. Addresses and data are transferred serial-
ly via a two-line bi-directional bus. The built-in ad-
dress register is incremented automatically after
each WRITE or READ data byte.
The M41T00 clock has a built-in power sense cir-
cuit which detects power failures and automatical-
Figure 2. Logic Diagram
Figure 3. SOIC Connections
4/21
OSCI
SCL
OSCO
V BAT
OSCI
V SS
V CC
V SS
1
2
3
4
M41T00
M41T00
AI00531
V BAT
®
8
7
6
5
RAM is a low power
V CC
FT/OUT
SCL
SDA
OSCO
SDA
FT/OUT
AI00530
ly switches to the battery supply during power
failures. The energy needed to sustain the RAM
and clock operations can be supplied from a small
lithium coin cell.
Typical data retention time is in excess of 5 years
with a 50mA/h 3V lithium cell (see
Mode, page 10
M41T00 is supplied in 8 lead Plastic Small Outline
package.
Table 1. Signal Names
OSCI
OCSO
FT/OUT
SDA
SCL
V
V
V
BAT
CC
SS
for AC/DC Characteristics). The
Oscillator Input
Oscillator Output
Frequency Test / Output Driver
(Open Drain)
Serial Data Address Input / Output
Serial Clock
Battery Supply Voltage
Supply Voltage
Ground
Data Retention