PDF M66220SP Data sheet ( Hoja de datos )

Número de pieza	M66220SP
Descripción	256 x 8-BIT MAIL-BOX
Fabricantes	Mitsubishi
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No Preview Available ! MITMSIUTBSUISBHIIS〈HDIIG〈DITIGAILTAALSSAPS〉SP〉 M6622M06S62P20/SFPP/FP 2562×568-×BI8T-BMITAIML-ABIOL-XBOX DESCRIPTION The M66220 is a mail box that incorporates a complete CMOS shared memory cell of 256 × 8-bit configuration using high-performance silicon gate CMOS process technology, and is equipped with two access ports of A and B. Access ports A and B are equipped with independent addresses CS, WE and OE control pins and I/O pins to allow independent and asynchronous read/write operations from/to shared memory individually. This product also incorporates a port adjustment arbitration function in address contention from both ports. FEATURES • Memory configuration of 256 × 8 bits • High-speed access, address access time 40ns (typ.) • Complete asynchronous accessibility from ports A and B • Completely static operation • Built-in port arbitration function • Low power dissipation CMOS design • 5V single power supply • Not Ready output pin is provided (open drain output) • TTL direct-coupled I/O • 3-state output for I/O pins APPLICATION Inter-MPU data transfer memory, buffer memory for image processing system. PIN CONFIGURATION (Top view) CHIP SELECT INPUT CSA→ 1 WRITE ENABLE INPUT WEA → 2 NOT READY OUTPUT Not Ready A ← 3 OUTPUT INPUT ENABLE OEA → 4  A0A→ 5   A1A→ 6   A2A→ 7  A PORT  A3A→ 8 ADDRESS  INPUT  A4A→ 9   A5A→ 10   A6A→ 11   A7A→ 12 A PORT DATA I/O  I/O0A↔ 13   I/O1A↔ 14   I/O2A↔ 15   I/O3A↔ 16   I/O4A↔ 17   I/O5A↔ 18   I/O6A↔ 19   I/O7A ↔ 20 GND 21 42 VCC 41 ← CSB CHIP SELECT INPUT 40 ← WEB WRITE INPUT ENABLE 39 → Not Ready B NOT READY OUTPUT 38 ← OEB OUTPUT ENABLE INPUT 37 ← A0B   36 ← A1B   35 ← A2B   34 ← A3B  B PORT  ADDRESS 33 ← A4B  INPUT  32 ← A5B  31 ← A6B   30 ← A7B   29 ↔ I/O7B   28 ↔ I/O6B   27 ↔ I/O5B   26 25 ↔ ↔ I/O4B I/O3B    B PORT DATA I/O  24 ↔ I/O2B   23 ↔ I/O1B   22 ↔ I/O0B  Outline 42P4B 42P2R-A BLOCK DIAGRAM NOT READY OUTPUT Not Ready A 3 WRITE ENABLE INPUT WEA 2 CHIP SELECT INPUT CSA 1 OUTPUT ENABLE INPUT OEA 4 I/O0A 13 I/O1A 14 I/O2A 15 A PORT DATA I/O I/O3A 16 I/O4A 17 I/O5A 18 I/O6A 19 I/O7A 20 A PORT ADDRESS INPUT A0A 5 A1A 6 A2A 7 A3A 8 A4A 9 A5A 10 A6A 11 A7A 12 VCC 42 CONTROL CIRCUIT ARBITRATION CIRCUIT CONTROL CIRCUIT A0A OEA WEA A7A 8 I/O BUFFER A0B WEB A7B OEB I/O BUFFER 8 8 ROW/COLUMN DECODER MEMORY ARRAY OF 256-WORD × 8-BIT CONFIGURATION ROW/COLUMN 8 DECODER 21 GND NOT READY 39 Not Ready B OUTPUT 40 WEB WRITE ENABLE INPUT 41 CSB CHIP SELECT INPUT 38 OEB OUTPUT ENABLE INPUT 22 I/O0B 23 I/O1B 24 I/O2B 25 I/O3B 26 I/O4B B PORT DATA I/O 27 I/O5B 28 I/O6B 29 I/O7B 37 A0B 36 A1B 35 A2B 34 A3B 33 A4B 32 A5B 31 A6B 30 A7B B PORT ADDRESS INPUT 1 1 page MITSUBISHI 〈DIGITAL ASSP〉 M66220SP/FP ABSOLUTE MAXIMUM RATINGS (Ta = 0 ~ 70°C, unless otherwise noted) Symbol Parameter Conditions VCC Supply voltage VI Input voltage VO Output voltage Pd Maximum power dissipation Tstg Storage temperature range When defining GND pin as a reference. Ta = 25°C 256 × 8-BIT MAIL-BOX Ratings –0.3 ~ +7.0 –0.3 ~ VCC + 0.3 0 ~ VCC 700 –65 ~ 150 Unit V V V mW °C RECOMMENDED OPERATING CONDITIONS Symbol VCC GND VI Topr Parameter Supply voltage Ground Input voltage Operating temperature range Min. 4.5 0 0 Limits Typ. 5.0 0 Max. 5.5 VCC 70 Unit V V V °C ELECTRICAL CHARACTERISTICS (Ta = 0 ~ 70°C, Vcc=5V±10%, unless otherwise noted) Symbol Parameter Test conditions VIH VIL VOH VOL VOL IIH IIL IOZH IOZL ICC ISB1 ISB2 “H” input voltage “L” input voltage “H” output voltage (I/O) “L” output voltage (I/O) Open drain “L” output voltage (Not Ready) “H” input current “L” input current Off state “H” output current Off state “L” output current Static current dissipation (active) Two-port stand-by One-port stand-by IOH = –2mA IOL = 4mA IOL = 8mA VI = VCC VI = GND CS = VIH or OE = VIH VO = VCC CS = VIH or OE = VIH VO = GND CS < 0.2V, Another input VIN > VCC – 0.2V or VIN < 0.2V, Output pin open CSA, CSB = VIH CSA or CSB = VIH IOUT = 0mA (Active port output pin open) ISB3 Two-port full stand-by CSA, CSB > VCC – 0.2V Another input VIN > VCC – 0.2V or VIN < 0.2V ISB4 One-port full stand-by CSA or CSB > VCC – 0.2V Another input VIN > VCC – 0.2V or VIN < 0.2V, IOUT = 0mA (Active port output pin open) CI Input capacitance CO Output capacitance in off state Notes 3: The direction in which current flows into the IC is defined as positive (no sign). 4: The above typical values are standard values for VCC = 5V and Ta = 25°C. Min. 2.2 –0.3 2.4 Limits Typ. Max. VCC+0.3 0.8 0.5 0.5 10.0 –10.0 Unit V V V V V µA µA 10.0 µA –10.0 µA 60 mA 5 mA 60 mA 0.1 mA 30 mA 10 pF 15 pF 5 5 Page MITSUBISHI 〈DIGITAL ASSP〉 M66220SP/FP 256 × 8-BIT MAIL-BOX SWITCHING CHARACTERISTICS MEASUREMENT CIRCUIT Input pulse level : VIH = 3.0V, VIL = 0V Input pulse rise/fall time : tr/tf = 5ns Input timing reference voltage : 1.5V Output timing decision voltage : 1.5V Output load : Figure 1 ~ 3 (The capacitance includes stray wiring capacitance and the probe input capacitance.) + 5V + 5V + 5V 1250Ω 1250Ω 575Ω I/O I/O Not Ready 775Ω 100pF 775Ω 5pF 50pF Fig 1. I/O Output Load Fig 2. I/O Output Load (to ten, tdis) Fig 3. Not Ready Output Load 11 11 Page

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