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What is MSM6690?

This electronic component, produced by the manufacturer "OKI electronic componets", performs the same function as "ROM Interface IC".


MSM6690 Datasheet PDF - OKI electronic componets

Part Number MSM6690
Description ROM Interface IC
Manufacturers OKI electronic componets 
Logo OKI electronic componets Logo 


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¡¡SemicondSucetormiconductor
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).

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MSM6690 equivalent
¡ Semiconductor
PIN DESCRIPTIONS
Symbol
VDD
GND
SADX
Type
I
SADY
I
SASX
SASY
TAS
I
I
I
RDCK
I
DOUT
O
CS1 I
CS2
CS3
CE2
CE3
A0 - A16
D0 - D7
TEST
TEST01
TEST02
O
O
I
I
O
MSM6690
Description
Power Supply
Ground
(SERIAL ADDRESS) Starting X address.
1024 words are addressed, and 1024 address data can be input as serial data
of 10 bit (AX0 to AX9) via SADX pin.
(SERIAL ADDRESS) Starting Y address.
1024 words are addressed, and 1024 address data can be input as serial data
of 10 bit (AY0 to AY9) via SADY pin.
(SERIAL ADDRESS STROBE) Clock to load X address's serial address data to
internal register.
(SERIAL ADDRESS STROBE) Clock to load Y address's serial address data to
internal register.
(TRANSFER ADDRESS STROBE) Serial address data loaded in address
register, to internal address counter.
X address and Y address data are loaded at fall of TAS pin.
(READ CLOCK) Clock to read data in data register.
Internal operation starts on falling edge of RDCK, and data in the data register
is output via DOUT pin. And internal address counter is automatically
incremented by one due to the falling of RDCK.
(DATA OUT) In case CS1, CS2 and CS3 are all at "H" level, or RDCK is at "H"
level data output pin is always at high impedance state.
When "H" level data or "L" level data is read out, output pin is set to "H" level or
"L" level and its read data is kept until RDCK turns to "H" level.
(CHIP SELECT) Three ROMS selection.
CS1 CS2 CS3 CE2 CE3
L —— H H
H L—L H
HHLHL
HHHHH
When CS1, CS2 and CS3 are all set to "H" level, all input/output pins become
disabled. By use of these pins, three ROM data output pins can be connected
in parallel.
(CHIP ENABLE) ROM enable.
Connect it to ROM's CE.
(ADDRESS OUT) ROM address.
(DATA IN) ROM data.
IC test.
Input "L" level data.
IC test.
Set to open.


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Part Details

On this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for MSM6690 electronic component.


Information Total 8 Pages
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