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Part: MSM66V84B
Category:
Communication
-> Telephony
-> Speech
Description: 4,194,304-word X 1-bit Serial Register
Company: Oki Semiconductor
Datasheet: Download MSM66V84B datasheet File size : 439 kB
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Datasheet text preview:
E2D0036-39-21 ¡ Semiconductor
¡ Semiconductor MSM66V84B
4,194,304-word x 1-bit Serial Register
This version: SM66V84B M Feb. 1999 Previous version: May. 1997
GENERAL DESCRIPTION
MSM66V84B 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 or 26/20 TSOP 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 100 mA max. (VCC = 3.6 V with data stored and under standard conditions) · Refresh operation A self-refresh function is supported. · Wide operation voltage range Single 2.7 to 3.6 V · Addressing Units of 1024 words · Process 0.45 mm double well CMOS process · Package options : 26/20-pin plastic SOJ (SOJ26/20-P-300-1.27) (Product name : MSM66V84BJS) 26/20-pin plastic TSOP (TSOPII26/20-P-300-1.27-K) (Product name : MSM66V84BTS-K)
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¡ Semiconductor
MSM66V84B
BLOCK DIAGRAM
Refresh Timer
Row Decoder
Address Multiplexer
Refresh Address Counter
4,194,304 Data Register
TAS
Row Address Counter
Column Decoder SAS I/O Control SAD Row Address Register Column Address Counter Timing Generator
DIN
DOUT
RWCK
Write Clock Generator
WE
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¡ Semiconductor
MSM66V84B
PIN CONFIGURATION (TOP VIEW)
TEST 1 RWCK 2 NC 3 TEST 4 TEST 5
26 VCC 25 TEST 24 TEST 23 SAD 22 SAS
TEST 1 RWCK 2 NC 3 TEST 4 TEST 5
26 VCC 25 TEST 24 TEST 23 SAD 22 SAS
TEST 9 TEST 10 DIN 11 NC 12 VSS 13
18 TAS 17 CS 16 WE 15 DOUT 14 NC
TEST 9 TEST 10 DIN 11 NC 12 VSS 13
18 TAS 17 CS 16 WE 15 DOUT 14 NC
NC : No connection 26/20-pin plastic SOJ
NC : No connection 26/20-pin plastic TSOP (K type)
PIN DESCRIPTION
Pin 25 1, 4, 5 9, 10, 24 2 11 13 15 16 17 18 22 23 26 Symbol TEST TEST RWCK DIN VSS DOUT WE CS TAS SAS SAD VCC Test input Test input Read/write clock Data input Ground (0 V) Data output Write enable Chip select Transfer address strobe Serial address strobe Serial address data Power supply (2.7 V to 3.6 V) Description
Note : All TEST pins are to be connected to the power supply. The TEST pin is to be referenced to the ground level.
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