Multiport DRAM. MSM5416262 Datasheet

MSM5416262 DRAM. Datasheet pdf. Equivalent

Part MSM5416262
Description Multiport DRAM
Feature E2L0018-17-Y1 www.DataSheet4U.com ¡ Semiconductor ¡ Semiconductor MSM5416262 262,144-Word ¥ 16-Bit .
Manufacture OKI electronic
Datasheet
Download MSM5416262 Datasheet



MSM5416262
E2L0018-17-Y1
www.DataSheet4U.com
¡¡SemicondSucetormiconductor
MSM5416262
262,144-Word ¥ 16-Bit Multiport DRAM
This versioMn:SMJan5.4119692862
Previous version: Dec. 1996
DESCRIPTION
The MSM5416262 is a 4-Mbit CMOS multiport DRAM composed of a 262,144-word by 16-bit
dynamic RAM, and a 512-word by 16-bit SAM. Its RAM and SAM operate independently and
asynchronously.
It supports three types of operations: random access to RAM port, high speed serial access to
SAM port, and bidirectional transfer of data between any selected row in the RAM port and the
SAM port. In addition to the conventional multiport DRAM operating modes, the MSM5416262
features block write, flash write functions on the RAM port and a split data transfer capability
on the SAM port. The SAM port requires no refresh operation because it uses static CMOS flip-
flops.
FEATURES
• Single power supply: 5 V ±10%
RAS only refresh
• Full TTL compatibility
CAS before RAS refresh
• Multiport organization
• Hidden refresh
RAM : 256K word ¥ 16 bits
• Serial read/write
SAM : 512 word ¥ 16 bits
• 512 tap location
• Fast page mode
• Bidirectional data transfer
• Write per bit
• Split transfer
• Byte write
• Masked write transfer
• Masked flash write
• Refresh: 512 cycles/8 ms
• Masked block write (4 ¥ 4 ¥ 4)
• Package:
64-pin 525 mil plastic SSOP (SSOP64-P-525-0.80-K) (Product : MSM5416262-xxGS-K)
xx indicates speed rank.
PRODUCT FAMILY
Family
MSM5416262-50
MSM5416262-60
MSM5416262-70
Access Time
RAM SAM
50 ns 17 ns
60 ns 18 ns
70 ns 20 ns
Cycle Time
RAM SAM
110 ns 20 ns
120 ns 22 ns
140 ns 22 ns
Power Dissipation
Operating
Standby
180 mA
9 mA
170 mA
9 mA
160 mA
9 mA
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MSM5416262
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PIN CONFIGURATION (TOP VIEW)
VCC 1
TRG 2
VSS 3
SDQ0 4
DQ0 5
SDQ1 6
DQ1 7
VCC 8
SDQ2 9
DQ2 10
SDQ3 11
DQ3 12
VSS 13
SDQ4 14
DQ4 15
SDQ5 16
DQ5 17
VCC 18
SDQ6 19
DQ6 20
SDQ7 21
DQ7 22
VSS 23
WEL 24
WEU 25
RAS 26
A8 27
A7 28
A6 29
A5 30
A4 31
VCC 32
64-Pin Plastic SSOP
MSM5416262
64 SC
63 SE
62 VSS
61 SDQ15
60 DQ15
59 SDQ14
58 DQ14
57 VCC
56 SDQ13
55 DQ13
54 SDQ12
53 DQ12
52 VSS
51 SDQ11
50 DQ11
49 SDQ10
48 DQ10
47 VCC
46 SDQ9
45 DQ9
44 SDQ8
43 DQ8
42 VSS
41 DSF
40 NC
39 CAS
38 QSF
37 A0
36 A1
35 A2
34 A3
33 VSS
Pin Name
A0 - A8
DQ0 - DQ15
SDQ0 - SDQ15
RAS
CAS
WEL
WEU
TRG
Function
Address Input
RAM Inputs/Outputs
SAM Inputs/Outputs
Row Address Strobe
Column Address Strobe
Write Enable Lower
Write Enable Upper
Transfer/Output Enable
Pin Name
SC
SE
DSF
QSF
VCC
VSS
NC
Function
Serial Clock
SAM Port Enable
Special Function Input
Special Function Output
Power Supply (5 V)
Ground (0 V)
No Connection
Note: The same power supply voltage must be provided to every VCC pin, and the same GND
voltage level must be provided to every VSS pin.
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