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MFG:OKI1  Package Cooled:DIP  D/C:07+  

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Part Number: MSM81C55-5RS

 

MFG: OKI1

Package Cooled: DIP

D/C: 07+

Description: The MSM81C55-5 has a 2k-bit static RAM (256 bytes) with parallel I/O ports and a timer. It uses silicon gate CMOS techn...


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MSM81C55-5RS General Description


The MSM81C55-5 has a 2k-bit static RAM (256 bytes) with parallel I/O ports and a timer. It uses silicon gate CMOS technology and consumes a standby current of 100 micro ampere, maximum, while the chip is not selected. Feat-ureing a maximum access time of 400 ns, the MSM81C55-5 can be used in an MSM80C85AH system without using wait states. The parallel I/O consists of two 8-bit ports and one 6-bit port (both general purpose).

The MSM81C55-5 also contains a 14-bit programmable counter/timer which may be used for sequence-wave gen-eration or terminal count-pulsing.

MSM81C55-5RS Maximum Ratings

Parameter
Symbol
Condition

Rating
Unit
MSM81C55-5RS MSM81C55-5GS MSM81C55-5JS
Power Supply Voltage
VCC
With respect
to GND
0.5 to +7.0
V
Input Voltage
VIN
0.5 to VCC +0.5
V
Output Voltage
VOUT
0.5 to VCC +0.5
V
Storage Temperature
TSTG
-
55 to +150
°C
Power Dissipation
PD
Ta = 25°C
1.0
0.7
 1.0
W

MSM81C55-5RS Features

• High speed and low power achieved with silicon gate CMOS technology
• 256 words x 8bits RAM
• Single power supply, 3 to 6 V
• Completely static operation
• On-chip address latch
• 8-bit programmable I/O ports (port A and B)
• TTL Compatible
• RAM data hold characteristic at 2 V
• 6-bit programmable I/O port (port C)
• 14-bit programmable binary counter/timer
• Multiplexed address/data bus
• Direct interface with MSM80C85AH
• 40-pin Plastic DIP (DIP40-P-600-2.54): (Product name: MSM81C55-5RS)
• 44-pin Plastic QFJ (QFJ44-P-S650-1.27): (Product name: MSM81C55-5JS)
• 44-pin Plastic QFP (QFP44-P-910-0.80-2K): (Product name: MSM81C55-5GS-2K)

MSM81C55-5RS Connection Diagram

MSM81C55-5RS Connection Diagram

MSM81C55-5RS datasheet

MSM81C55-5RS
PDF/DataSheet Download

  • Datasheet: MSM81C55-5RS
  • File Size: 160680 KB
  • Manufacturer: OKI [OKI electronic componets]
  • Click here to Download

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