M48Z58Y5 V, 64 Kbit (8 Kb x 8) ZEROPOWER® SRAM | Integrated Circuits (ICs) | 1 | Active | The M48Z58/Y ZEROPOWER®RAM is an 8 kbit x 8 non-volatile static RAM that integrates power-fail deselect circuitry and battery control logic on a single die. The monolithic chip is available in two special packages to provide a highly integrated battery-backed memory solution.
The M48Z58/Y is a non-volatile pin and function equivalent to any JEDEC standard 8 kbit 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.
The 28-pin, 600 mil DIP CAPHAT™houses the M48Z58/Y silicon with a long life lithium button cell in a single package.
The 28-pin, 330 mil SOIC provides sockets with gold plated contacts at both ends for direct connection to a separate SNAPHAT®housing containing the battery. The unique design allows the SNAPHAT battery package to be mounted on top of the SOIC package after the completion of the surface mount process. Insertion of the SNAPHAT housing after reflow prevents potential battery damage due to the high temperatures required for device surface-mounting. The SNAPHAT housing is keyed to prevent reverse insertion.
The SOIC and battery packages are shipped separately in plastic anti-static tubes or in tape & reel form.
For the 28-lead SOIC, the battery package (e.g., SNAPHAT) part number is "M4Z28-BR00SH1". |
M4T32-BR12SHSNAPHAT® 120 mAh lithium coin cell battery with crystal | IC Batteries | 1 | Active | The M4Txx-BR12SH SNAPHAT®top is a detachable lithium power source for ST’s serial real-time clock and non-volatile TIMEKEEPER®surface-mount SOIC package (28- and 44-pin).
The SNAPHAT top contains both the battery and crystal and is designed to be "snapped on" after the SOIC is surface mounted on the PC board. Thus the two-piece solution prevents the battery and crystal from being exposed to the high temperatures of the surface-mount process. |
| Display Drivers | 2 | Obsolete | |
| Data Acquisition | 1 | Obsolete | |
| Display Drivers | 1 | Obsolete | |
| Integrated Circuits (ICs) | 2 | Obsolete | |
| Memory | 1 | Obsolete | |
| Integrated Circuits (ICs) | 1 | Obsolete | |
| Buffers, Drivers, Receivers, Transceivers | 3 | Active | The M74HC126 is a high-speed CMOS quad buffer (3-state) fabricated with silicon gate C2MOS technology.
The device requires the 3-state control input, G, to be set high to place the output into high impedance state.
All inputs are equipped with protection circuits against static discharge and transient excess voltage. |
| Signal Switches, Multiplexers, Decoders | 1 | Active | The M74HC151 is a high-speed CMOS 8-channel multiplexer manufactured using silicon gate C2MOS technology.
It provides, in one device, the ability to select one bit of data from up to eight sources. The M74HC151 can be used as a universal function generator to generate any logic function of four variables. Outputs Y and W are complementary; the selection depends on the address inputs A, B, and C. The strobe input must be taken low to enable this device. When the strobe is high, the W output is forced high and consequently the Y output goes low. All inputs are equipped with protection circuits to guard against static discharge and transient excess voltage. |
