MSM6684B

E2D0035-39-21 ¡ Semiconductor ¡ Semiconductor MSM6684B 4,194,304-word x 1-bit Serial Register This version: MSM6684B Feb. 1999 Previous version: May. 1997 GENERAL DESCRIPTION MSM6684B is a serial register organized as 4,194,304 words x one bit, characterized by mediumspeed, low power consumption operation. This device has a built-in internal address generation circuit allowing continuous serial read/write operation by external clock input. Read/write operation causes the internal address to be incremented automatically by +1. External address input enables addressing in units of 1024 words. Furthermore, a refresh timer and a refresh address counter are installed, which makes an external refresh circuit unnecessary. In addition, this configuration allows lower power consumption. The device is packaged in 26/20-pin SOJ having a width of 300 mil. It is well adapted for storing much data by means of a battery backup. Its combination with our recording and playback LSI enables the easy implementation of a solid recording and playback system. FEATURES Configuration 4,194,304 x 1 bit Serial access operation Serial access time : 1.5 ms Serial read/write time : 2.5 ms Low current drain 150 mA max. (VCC = 4 V with data stored and under standard conditions) Refresh operation A self-refresh function is supported. Wide operation voltage range Single 3.5 to 5.5 V Addressing Units of 1024 words Process 0.45 mm double well CMOS process Package : 26/20-pin plastic SOJ (SOJ...