M41T81SM6F vs M41T82RM6F Comparison
Detailed side-by-side comparison of M41T81SM6F by STMicroelectronics and M41T82RM6F by STMicroelectronics. Compare key specifications, electrical parameters, packaging, lifecycle status, pricing, and availability to determine the best component for your design requirements.
STMicroelectronics
M41T81SM6F - Serial RTC 2.7-5.5V I2C 8-SOIC | STMicroelectronics
M41T81SM6F ✓ ActiveSTMicroelectronics
M41T82RM6F - Low-Power I2C RTC with 32.768 kHz | STMicroelectronics
M41T82RM6F ✓ ActiveSpecification Comparison
| Parameter | M41T81SM6F | M41T82RM6F |
|---|---|---|
| Brand | STMicroelectronics | STMicroelectronics |
| Category | Clock & Timing | Clock & Timing |
| Lifecycle Status | Active | Active |
| Stock Status | In Stock | In Stock |
| Unit Price (USD) | $1.55 | $4.01 |
| Manufacturer | STMicroelectronics | — |
| Product Type | Serial Real-Time Clock (RTC) | — |
| Function | Clock/Calendar with Alarms | Timekeeping and calendar |
| Serial Interface | I2C (2-Wire), 400 kHz Fast-mode | — |
| Supply Voltage (VCC) | 2.7 V to 5.5 V | — |
| Timekeeping Format | BCD (binary-coded decimal) | — |
| Timekeeper Registers | Tenths of seconds, seconds, minutes, hours, day, date, month, year, century | — |
| Internal SRAM | 64 bytes (64x8) | — |
| Internal Oscillator Frequency | 32.768 kHz (external crystal controlled) | — |
| Operating Temperature Range | -40 C to +85 C | — |
| Package / Case | 8-SOIC (0.154 inch / 3.90 mm width) | — |
| Mounting Type | Surface Mount | Surface mount |
| Programmable Alarms | Yes (date/day/time alarm) | — |
| Watchdog / SQW Output | Yes | — |
| Leap Year Compensation | Automatic through 2099 | — |
| RoHS Status | Compliant | [DATA_NEEDED: RoHS status] |
| MSL Level | 1 (unlimited) | — |
| Device Type | — | Serial I2C real-time clock and calendar |
| Interface | — | I2C, 2-wire serial |
| Register Address Format | — | 7-bit |
| Clock Operating Voltage | — | 2.0 V to 5.5 V |
| Oscillator Frequency | — | 32.768 kHz |
| Oscillator Control | — | External crystal-controlled for SO8 package |
| Battery Supply Current | — | 365 nA ultra-low |
| Package | — | 8-pin SOIC |
| Package Width | — | 3.90 mm |
| Alarm Function | — | Available; detailed polarity and behavior require datasheet confirmation |
| Timer Function | — | Available; detailed configuration requires datasheet confirmation |
| Battery Backup | — | Supported by the M41T8x RTC family |
| REACH Status | — | [DATA_NEEDED: REACH status] |
| AEC-Q100 Qualification | — | [DATA_NEEDED: AEC-Q100 qualification] |
| Operating Temperature | — | [DATA_NEEDED: operating temperature range] |
| Absolute Maximum Ratings | — | [DATA_NEEDED: absolute maximum ratings] |