MSM6690 Datasheet, PDF (1/8 Pages) OKI electronic componets – ROM Interface IC

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MSM6690
ROM Interface IC
MSM6690
GENERAL DESCRIPTION
The MSM6690 can drive three devices of 131,072 x 8-bit EPROM or Mask ROM.
The MSM6690 contains a built-in internal address generator circuit and one external clock input
that enables contiued serial read operations. The internal address counter is automatically
incremented by one each read operation. The external serial address input allows 1,024 words
to be addressed in the X-direction, and 1,024 words in the Y-direction.
* ROM is selected through CS1, CS2 and CS3 pins.
FEATURES
• Capable of driving three devices of 1 Mbit EPROM
• Capable of driving three devices of 1 Mbit Mask ROM
• Supply voltage : Single 5 V
• Package options : 42-pin plastic DIP (DIP42-P-600) (Product name: MSM6690RS)
44-pin plastic QFP (QFP44-P-910-2K) (Product name: MSM6690GS-2K)
* Available combinations
MSM6388/6588
+
MSM6389/6587/6586
+
MSM6690
+
ROM
MSM6688/6788/6789A
+
(MSM6684/6685)
+
MSM6690
+
ROM
Note:
When driving the MSM6690 with the MSM6388 or the MSM6588, a serial register
(MSM6389, MSM6688 or MSM6586) is required.
In the case of the MSM6688, MSM6788 and MSM6789A, a playback system can be
constructed without a serial register (MSM6684 or MSM6685).