OKI MSM6690 Rom interface ic Datasheet

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MSM6690
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MSM6690
ROM Interface IC
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).
5
MSM6690
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CE2
CE3
DOUT
D7
D0
TEST
TEST01
TEST02
VDD
GND
BLOCK DIAGRAM
MULTIPLEXER
A0
A6
A7
3
A16
CK
CS1
CS CONTROLLER
CS2
RDCK
CS3
TAS
SASY
SADY
SASX
Y-ADDRESS
REGISTER
CK
10
Sin
X-ADDRESS
REGISTER
CK
Sin
10
LD
CK
Y-ADDRESS
COUNTER
LD
X-ADDRESS
COUNTER
SADX
5
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MSM6690
PIN CONFIGURATION (TOP VIEW)
DOUT
1
42
VDD
TEST01
2
41
SADX
TEST02
3
40
SADY
TEST
4
39
SASX
TAS
5
38
SASY
RDCK
6
37
CS3
A16
7
36
CS2
A15
8
35
CS1
A12
9
34
A14
A7
A6
10
11
33
32
A13
A8
A5
12
31
A9
A4
13
30
A11
A3
14
29
A10
A2
15
28
CE2
A1
16
27
CE3
A0
D0
17
18
26
25
D7
D6
D1
19
24
D5
D2
20
23
D4
GND
21
22
D3
42-Pin Plastic DIP
5
MSM6690
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34 SASY
35 SASX
36 SADY
37 SADX
38 VDD
39 VDD
40 DOUT
41 TEST01
42 TEST02
29 A13
A6
6
28 A8
A5
7
27 A9
A4
8
26 A11
A3
9
25 A10
A2 10
24 CE2
A1 11
23 CE3
44-Pin Plastic QFP
D7 22
30 A14
5
D6 21
4
A7
D5 20
A12
D4 19
31 CS1
D3 18
32 CS2
3
VDD 17
2
A15
D2 15
A16
GND 16
33 CS3
D1 14
1
D0 13
RDCK
A0 12
5
43 TEST
44 TAS
PIN CONFIGURATION (TOP VIEW) (Continued)
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MSM6690
PIN DESCRIPTIONS
Symbol
Type
Description
VDD
—
Power Supply
GND
—
Ground
SADX
I
(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.
SADY
I
(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.
SASX
I
(SERIAL ADDRESS STROBE) Clock to load X address's serial address data to
internal register.
SASY
I
(SERIAL ADDRESS STROBE) Clock to load Y address's serial address data to
internal register.
TAS
I
(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.
RDCK
I
(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.
DOUT
O
(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.
CS1
I
(CHIP SELECT) Three ROMS selection.
CS2
CS3
CS1
CS2
CS3
CE2
CE3
L
—
—
H
H
H
L
—
L
H
H
H
L
H
L
H
H
H
H
H
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.
CE2
O
CE3
(CHIP ENABLE) ROM enable.
Connect it to ROM's CE.
A0 - A16
O
(ADDRESS OUT) ROM address.
D0 - D7
I
(DATA IN) ROM data.
TEST
I
IC test.
Input "L" level data.
TEST01
TEST02
O
IC test.
Set to open.
5
MSM6690
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ABSOLUTE MAXIMUM RATINGS
Parameter
Power Supply Voltage
Symbol
Condition
Rating
VDD
Unit
–0.3 to +7.0
V
Input Voltage
VI
Ta = 25°C
–0.3 to VDD+0.3
V
Output Voltage
VO
Typical:
–0.3 to VDD+0.3
V
Input Current
II
GND = 0 V
–10 to +10
mA
–20 to +20
mA
—
–55 to +150
°C
Output Current
Storage Temperature
IO
TSTG
RECOMMENDED OPERATING CONDITIONS
(GND = 0 V)
Parameter
5
Symbol
Range
Unit
Power Supply Voltage
VDD
+3.0 to +6.0
V
Operating Temperature
Top
–40 to +85
°C
ELECTRICAL CHARACTERISTICS
DC Characteristics
(VDD = 5.0 V ± 10%, GND = 0 V, Ta = –40 to +85°C)
Parameter
Condition
Min.
Typ.*
Max.
Unit
"H" level Input Voltage
VIH
CMOS level input
3.5
—
VDD+0.3
V
"L" level Input Voltage
VIL
CMOS level input
–0.3
—
1.5
V
"H" level Input Current
IIH
VIH = VDD
—
0.01
10
mA
mA
IIL
VIL = GND
–10
–0.01
—
3-state Output Leak Current
IOZH
VOH = VDD
—
0.01
10
(with open drain output)
IOZL
VOL = GND
–10
–0.01
—
"H" level Output Voltage
V OH
IOH = –5.0 mA
2.4
4.2
VDD
V
"L" level Output Voltage
V OL
IOL = 5.0 mA
GND
0.24
0.5
V
—
0.1
100
mA
—
—
2
mA
"L" level Input Current
*
Symbol
Supply Current at Standby
I DS
Supply Current at Operating
I DD
Output open VIH = VDD
VIL = GND
—
Typical operation is with VDD = 5.0 V, Ta = 25°C
mA
CS1
CS2
CS3
CS4
TAS
RWCK
WE
DI/O
SAS
SAD
GND
DIN
AU/D
TEST
TEST
TEST
TEST
VDD
MSM6388
MSM6588
VDD
TAS
TEST
SAS
WE
CS
DOUT
GND
RWCK
MSM6389
CS1
CS2
CS3
DOUT
SADX
SADY
SASX
SASY
TAS
RDCK
GND
A16
TEST
CE3
CE2
TEST02
VPP
CE GND OE
CE GND OE
VPP
CE GND OE
A16
A16
27C1000
VCC PGM
D0
A16
27C1000
VCC PGM
D0
D7
A0
D7
A0
D7
A0
27C1000
PGM VPP
D7
A0
VCC
D0
D0
TEST01
MSM6690
VDD
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MSM6690
APPLICATION CIRCUITS
5
SAD
Example of application circuit where MSM6388/6588,a 1-Mbit serial register,
and three 1-Mbit EPROMs are connected.
DOUT
CS1
CS2
CS3
DROM
CS1
CS2
CS3
CS4
MSM6688
MSM6789A
GND
TAS
RWCK
SADY
SAS
SADX
SADY
SASX
SASY
TAS
RDCK
SADX
GND
A16
D7
A0
D0
Example of application circuit where MSM6688/6789A
and four 1-Mbit EPROMs are connected.
TEST
CE3
CE2
TEST02
TEST01
MSM6690
VDD
A16
CE GNDOE
CE GNDOE
D7
A0
27C1000
VCC PGM VPP
D0
A16
D7
A0
27C1000
VCC PGM VPP
D0
5
VDD
VPP
CE GNDOE
A16
D7
A0
27C1000
VCCPGM
D0
CE GNDOE
A16
D7
A0
27C1000
VCC PGM VPP
D0
MSM6690
¡ Semiconductor
APPLICATION CIRCUITS (Continued)
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