-
The M48T02/12 TIMEKEEPER®RAM is a 2 Kb x 8 non-volatile static RAM and real-time clock which is pin and functional compatible with the DS1642.
A special 24-pin, 600 mil DIP CAPHAT™package houses the M48T02/12 silicon with a quartz crystal and a long life lithium button cell to form a highly integrated battery-backed memory and real-time clock solution.
The M48T02/12 button cell has sufficient capacity and storage life to maintain data and clock functionality for an accumulated time period of at least 10 years in the absence of power over the operating temperature range.
The M48T02/12 is a non-volatile pin and function equivalent to any JEDEC standard 2 Kb x 8 SRAM. It also easily fits into many ROM, EPROM, and EEPROM sockets, providing the non-volatility of PROMs without any requirement for special WRITE timing or limitations on the number of WRITEs that can be performed.主要特性
- Integrated, ultra low power SRAM, real-time clock, and power-fail control circuit
- BYTEWIDE™RAM-like clock access
- BCD coded year, month, day, date, hours, minutes, and seconds
- Typical clock accuracy of ±1 minute a month, at 25 °C
- Software controlled clock calibration for high accuracy applications
- Automatic power-fail chip deselect and WRITE protection
- WRITE protect voltages (VPFD= power-fail deselect voltage):
- M48T02: VCC= 4.75 to 5.5 V; 4.5 V ≤ VPFD≤ 4.75 V
- M48T12: VCC= 4.5 to 5.5 V; 4.2 V ≤ VPFD≤ 4.5 V
- Self-contained battery and crystal in the CAPHAT™DIP package
- Pin and function compatible with JEDEC standard 2 K x 8 SRAMs
- RoHS compliant
- Lead-free second level interconnect
下载
样片和购买
| 型号 | Package | Packing Type | Marketing Status | Quantity | ECCN (US) | Country of Origin | Order from Distributors | Order from ST |
|---|---|---|---|---|---|---|---|---|
| M48T12-70PC1 | PDIP 24 .7 | Tube |
Active
|
1000 | EAR99 | MALAYSIA | Check Availability | |
| M48T12-150PC1 | PDIP 24 .7 | Tube |
Active
|
1000 | EAR99 | MALAYSIA | Check Availability | Buy now |
M48T12-70PC1
Package
PDIP 24 .7Packing Type
Tube(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors
| 型号 | Marketing Status | Package | Grade | RoHS Compliance Grade | Material Declaration** |
|---|---|---|---|---|---|
| M48T12-150PC1 |
Active
|
PDIP 24 .7 | 工业 | Ecopack1 | |
| M48T12-70PC1 |
Active
|
PDIP 24 .7 | 工业 | Ecopack1 |
(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.
