ChongMing Group (HK) Int'l Co., Ltd
CHONGMING GROUP (HK) INT'L CO., LTD.
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FEATURES SUMMARY
■ 5V ±10% SUPPLY VOLTAGE
■ COUNTERS FOR SECONDS, MINUTES, HOURS, DAY, DATE, MONTH, YEARS, AND CENTURY
■ YEAR 2000 COMPLIANT
■ SOFTWARE CLOCK CALIBRATION
■ AUTOMATIC POWER-FAIL DETECT AND SWITCH CIRCUITRY
■ I 2C BUS COMPATIBLE
■ 56 BYTES OF GENERAL PURPOSE RAM
■ ULTRA-LOW BATTERY SUPPLY CURRENT OF 450nA
■ LOW OPERATING CURRENT OF 300µA
■ OPERATING TEMPERATURE OF –40 to 85°C
■ AUTOMATIC LEAP YEAR COMPENSATION
■ SPECIAL SOFTWARE PROGRAMMABLE OUTPUT
■ PACKAGING OPTIONS INCLUDE: – 28-lead SOIC and SNAPHAT® TOP (to be ordered separately) – SO8
SUMMARY DESCRIPTION
The M41T56 TIMEKEEPER® is a low power, 512- bit static CMOS RAM organized as 64 words by 8 bits. A built-in 32,768Hz oscillator (external crystal controlled) and the first 8 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 serially via a twoline, bi-directional bus. The built-in address register is incremented automatically after each WRITE or READ data byte.
STOCK LIST
| SN74CB3T3384PWR | 9540 | TI | 11+ | TSSOP-24 |
| SN74LVC8T245DGVR | 10184 | TI | 14+ | TSSOP-24 |
| SN74LVC8T245PWR | 4096 | TI | 14+ | TSSOP-24 |
| SN74LVCC3245APWR | 4380 | TI | 10+ | TSSOP-24 |
| TCA9555PWR | 9876 | TI | 16+ | TSSOP-24 |
| TPS5110PWR | 7478 | TI | 16+ | TSSOP-24 |
| TPS65150PWPR | 10438 | TI | 16+ | TSSOP-24 |
| UCC28950PWR | 2597 | TI | 16+ | TSSOP-24 |
| SN74ABT541BPWR | 16066 | TI | 16+ | TSSOP-20 |
| SN74ACT244PWR | 8546 | TI | 14+ | TSSOP-20 |
| SN74AHC373PWR | 16394 | TI | 16+ | TSSOP-20 |
| SN74AHC541PWR | 12380 | TI | 11+ | TSSOP-20 |
| SN74AHCT574PWR | 11678 | TI | 16+ | TSSOP-20 |
| SN74ALVC245PWR | 8582 | TI | 12+ | TSSOP-20 |
| SN74CB3Q3245PWR | 29044 | TI | 12+ | TSSOP-20 |
| SN74HC240PWR | 10500 | TI | 08+ | TSSOP-20 |
| SN74HC241PWR | 14522 | TI | 16+ | TSSOP-20 |
| SN74HC541PWR | 14864 | TI | 10+ | TSSOP-20 |
| SN74HCT244PWR | 13658 | TI | 16+ | TSSOP-20 |
| SN74HCT273PWR | 12668 | TI | 14+ | TSSOP-20 |
| SN74HCT573PWR | 12902 | TI | 15+ | TSSOP-20 |
| SN74LV244APWR | 16538 | TI | 11+ | TSSOP-20 |
| SN74LV245APWR | 12920 | TI | 10+ | TSSOP-20 |
| SN74LV373APWR | 16556 | TI | 10+ | TSSOP-20 |
| SN74LVC373APWR | 12938 | TI | 10+ | TSSOP-20 |
| SN74LVC573APWR | 17924 | TI | 10+ | TSSOP-20 |
| SN74LVC574APWR | 13802 | TI | 16+ | TSSOP-20 |
| TLC3544IPW | 848 | TI | 08+ | TSSOP-20 |
| TXB0108PWR | 21556 | TI | 16+ | TSSOP-20 |
| TXS0108EPWR | 16024 | TI | 16+ | TSSOP-20 |
| TD62083AFNG | 18556 | TOSHIBA | 15+ | TSSOP-18 |
| SN65C3221PWR | 25416 | TI | 10+ | TSSOP-16 |
| SN74HC151PWR | 17294 | TI | 16+ | TSSOP-16 |
| SN74HC153PWR | 13604 | TI | 10+ | TSSOP-16 |
| SN74HC157PWR | 41500 | TI | 09+ | TSSOP-16 |
| SN74LV165APWR | 15332 | TI | 14+ | TSSOP-16 |
| SN74LV4051APWR | 14414 | TI | 10+ | TSSOP-16 |
| SN74LV4051ATPWRQ1 | 45956 | TI | 04+ | TSSOP-16 |
| SN74LVC157APWR | 13712 | TI | 10+ | TSSOP-16 |
| TLV2375IPWR | 4748 | TI | 10+ | TSSOP-16 |
| TPS40055PWPR | 2588 | TI | 16+ | TSSOP-16 |
| TPS40061PWP | 2588 | TI | 16+ | TSSOP-16 |
| TS3A44159PWR | 16988 | TI | 14+ | TSSOP-16 |
| TSC2046IPWR | 15296 | TI | 14+ | TSSOP-16 |
| TXB0106PWR | 6954 | TI | 16+ | TSSOP-16 |
| UCC2893PW | 8538 | TI | 16+ | TSSOP-16 |
| ULN2003AIPWR | 5296 | TI | 13+ | TSSOP-16 |
| TA1372FNG | 32952 | TOSHIBA | 14+ | TSSOP-16 |
| WM8524GEDT/R | 13488 | WOLFSON | 16+ | TSSOP-16 |
| SN74AC08PWR | 13568 | TI | 14+ | TSSOP-14 |
| SN74AHC08PWR | 75000 | TI | 16+ | TSSOP-14 |
| SN74ALVC00PWR | 12328 | TI | 16+ | TSSOP-14 |