Texas Instruments BQ4016YMC-70-Memory Integrated Circuits

Memory integrated circuits underlie virtually all modern electronics, allowing systems to efficiently store data for the short or long-term. A type of integrated circuit made out of millions of semiconductors that can store data or can be used to process code.

 

BQ4016YMC-70 Description

Made by Texas Instruments, the CMOS bq4016 is a nonvolatile 8,388,608-bit static RAM organized as 1,048,576 words by 8 bits. The integral control circuitry and lithium energy source provide reliable nonvolatility coupled with the unlimited write cycles of standard SRAM.

When VCC falls out of tolerance, the SRAM is unconditionally write-protected to prevent an inadvertent write operation. At this time the integral energy source is switched on to sustain the memory until after VCC returns valid.

The bq4016 uses extremely low standby current CMOS SRAMs, coupled with a small lithium coin cell to provide nonvolatility without long write-cycle times and the writecycle limitations associated with EEPROM.

 

 

 

 

BQ4016YMC-70 Features

Data retention in the absence of power

Automatic write-protection during power-up/power-down cycles

Conventional SRAM operation; unlimited write cycles

10-year minimum data retention in absence of power

Battery internally isolated until power is applied

 

BQ4016YMC-70 Functional Description

When power is valid, the bq4016 operates as a standard CMOS SRAM. During power-down and power-up cycles, the bq4016 acts as a nonvolatile memory, automatically protecting and preserving the memory contents.

Power-down/power-up control circuitry constantly monitors the VCC supply for a power-fail-detect threshold VPFD. The bq4016 monitors for VPFD = 4.62V typical for use in systems with 5% supply tolerance. The bq4016Y monitors for VPFD = 4.37V typical for use in systems with 10% supply tolerance.

When VCC falls below the VPFD threshold, the SRAM automatically write-protects the data. All outputs become high impedance, and all inputs are treated as “don’t care.” If a valid access is in process at the time of power-fail detection, the memory cycle continues to completion. If the memory cycle fails to terminate within time tWPT, write-protection takes place.

 

BQ4016YMC-70 Absolute Maximum Rating

 

BQ4016YMC-70 Mechanical Data

BQ4016YMC-70 Truth Table

BQ4016YMC-70 Product Parameter

Manufacturer	Texas	Manufacturer's Part	BQ4016YMC-70
Categories	Integrated Circuits (ICs)	Sub-Categories	Memory
Series	-	Part Status	Obsolete
Memory Type	Non-Volatile	Memory Format	NVSRAM
Technology	NVSRAM (Non-Volatile SRAM)	Memory Size	8Mb (1M x 8)
Clock Frequency	-	Write Cycle Time - Word	70ns
Access Time	70ns	Memory Interface	Parallel
Voltage - Supply	4.5V ~ 5.5V	Operating Temperature	0°C ~ 70°C (TA)
Mounting Type	Through Hole	Package / Case	36-DIP Module (0.610", 15.49mm)
Supplier Device Package	36-DIP Module (18.42x52.96)

 

BQ4016YMC-70 Manufacturer

Texas Instruments is a semiconductor multinational company in Texas, USA. It is famous for developing, manufacturing, and selling semiconductor and computer technology. It is mainly engaged in innovative digital signal processing and analog circuits. In addition to the semiconductor business, it also provides solutions including sensing and control, educational products and digital light source processing. Texas Instruments (TI) is headquartered in Dallas, Texas, USA, and has manufacturing, design or sales organizations in more than 25 countries.