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HM534253B

Features: · Multiport organizationAsynchronous and simultaneous operation of RAM anPinoutSpecifications Parameter Symbol Value Unit Note Voltage on any pin relative to VSS VT 1.0 to +7.0 V 1 Supply voltage relative to VSS VCC 0.5 to +7.0 V 1 Short ...

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SeekIC No. : 004363465 Detail

HM534253B: Features: · Multiport organizationAsynchronous and simultaneous operation of RAM anPinoutSpecifications Parameter Symbol Value Unit Note Voltage on any pin relative to VSS VT ...

HM534253B Data Sheet

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Part Number:
HM534253B
Supply Ability:
5000

Price Break

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

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Product Details

Description



Features:

·  Multiport organizationAsynchronous and simultaneous operation of RAM an


Pinout

Connection Diagram


Specifications

Parameter
Symbol
Value
Unit
Note
Voltage on any pin relative to VSS
VT
1.0 to +7.0
V
1
Supply voltage relative to VSS
VCC
0.5 to +7.0
V
1
Short circuit output current
Iout
50
mA
Power dissipation
PT
1.0
W
Operating temperature
Topr
0 to +70
°C
Storage temperature
Tstg
55 to +125
°C
Note: 1. Relative to VSS.


Description

The HM534253B is a 1-Mbit multiport video RAM equipped with a 256-kword× 4-bit dynamic RAM and a 512-word× 4-bit SAM (serial access memory). Its RAM and SAM operate independently and asynchronously. It can transfer data between RAM and SAM. In addition, HM534253B has two modes to realize fast writing in RAM. Block write and flash write modes clear the data of 4-word× 4-bit and the data of one row (512-word ×4-bit) respectively in one cycle of RAM. And the M534253B makes split transfer cycle possible by dividing SAM into two split buffers equipped with 256-word ×4-bit each. This HM534253B cycle can transfer data to SAM which is not active, and enables a continuous serial access.




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