M66222FP MITSUBISHI [Mitsubishi Electric Semiconductor], M66222FP Datasheet
M66222FP
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M66222FP Summary of contents
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DESCRIPTION The M66222 is a mail box that incorporates two complete CMOS shared memory cells of 128 8-bit configuration using high- performance silicon gate CMOS process technology, and are equipped with two access ports of A and B. Access ports ...
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FUNCTION The M66222 is a mail box most suitable for inter-MCU data communication interface. Provision of two pairs of addresses and data buses in its shared memory cell of 128 allows independent and asynchronous read/write operations from/to two access ports ...
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FUNCTIONAL DESCRIPTION The M66222 with independent and asynchronous accessibility from two ports has the following four basic operations depending on an address and mode set from both ports: (1) A port .......... Write B port .......... Write (2) A port ...
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ABSOLUTE MAXIMUM RATINGS Symbol Parameter V Supply voltage CC V Input voltage I V Output voltage O P Maximum power dissipation d T Storage temperature range stg RECOMMENDED OPERATING CONDITIONS Symbol Parameter V Supply voltage CC GND Ground V Input ...
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SWITCHING CHARACTERISTICS Read cycle Symbol t Read cycle time CR t Address access time a(A) t Chip select access time a(CS) t Output enable access time a(OE) t Output disable time after CS (Note 5) dis(CS) t Output disable time ...
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TIMING DIAGRAM Read Cycle ( Read cycle No. 1 (Address control) ( I/O ~I/O Previous cycle data OUT Read cycle No. 2 (CS control) ...
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Write Cycle Write cycle No.1 (WE control) See Notes 6, 7 and su(A)1 WE I/O ~I I/O ~I OUT Write cycle No.2 (CS ...
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SWITCHING CHARACTERISTICS MEASUREMENT CIRCUIT Input pulse level : V = 3.0V Input pulse rise/fall time : 5ns r f Input timing reference voltage : 1.5V Output timing decision voltage : 1.5V Output load : Figure ...