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MSM54C865

Features: • Single power supply: 5 V ±10%• Full TTL compatibility• Multiport organization RAM: 64K word × 8 bitsSAM : 256 word × 8 bits• Fast page mode• Write per bit• Masked flash write• Masked block write•RAS only refresh•CAS beforeRAS refres...

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SeekIC No. : 004428886 Detail

MSM54C865: Features: • Single power supply: 5 V ±10%• Full TTL compatibility• Multiport organization RAM: 64K word × 8 bitsSAM : 256 word × 8 bits• Fast page mode• Write per bit&#...

MSM54C865 Data Sheet

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Part Number:
MSM54C865
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Upload time: 2024/11/26

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Product Details

Description



Features:

• Single power supply: 5 V ±10%
• Full TTL compatibility
• Multiport organization
   RAM: 64K word × 8 bits
   SAM : 256 word × 8 bits
• Fast page mode
• Write per bit
• Masked flash write
• Masked block write
• RAS only refresh
• CAS before RAS refresh
• Hidden refresh
• Serial read/write
• 256 tap location
• Bidirectional data transfer
• Split transfer
• Masked write transfer
• Refresh :256 cycles/4 ms
• Package options:
  40-pin 475 mil plastic ZIP (ZIP40-P-475-1.27) (Product : MSM54C865-xxZS)
  40-pin 400 mil plastic SOJ (SOJ40-P-400-1.27) (Product : MSM54C865-xxJS)
                                                                                  xx indicates speed rank


Pinout

Connection Diagram


Specifications

Parameter
Symbol
Condition
Rating
Unit
Input Output Voltage
VT
Ta = 25°C
1.0 to 7.0
V
Output Current
IOS
Ta = 25°C
50
mA
Power Dissipation
PD
Ta = 25°C
1
W
Operating Temperature
Topr
-
0 to 70
°C
Storage Temperature
Tstg
-
55 to 150
°C



Description

The MSM54C865 is a 512Kbit CMOS multiport DRAM composed of a 65,536-word by 8-bit dynamic RAM and a 256-word by 8-bit SAM. Its RAM and SAM operate independently and asynchronously.

The MSM54C865 supports three types of operaton: 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 MSM54C865 features the block write and 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




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