MCM67D709FN20 데이터 시트보기 (PDF) - Motorola => Freescale

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MCM67D709FN20

128K x 9 Bit Synchronous Dual I/O Fast Static RAM

Motorola => Freescale 

AC OPERATING CONDITIONS AND CHARACTERISTICS

(VCC = 5.0 V ± 5%, TA = 0 to + 70°C, Unless Otherwise Noted)

Input Timing Measurement Reference Level . . . . . . . . . . . . . . . 1.5 V

Input Pulse Levels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 to 3.0 V

Input Rise/Fall Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 ns

Output Measurement Timing Level . . . . . . . . . . . . . . . . . . . . . . . 1.5 V

Output Load . . . . . . . . . . . . See Figure 1A Unless Otherwise Noted

READ CYCLE (See Note 1)

Processor Frequency

60 MHz

50 MHz

MCM67D709–16 MCM67D709–20

Parameter

Symbol

Min

Max

Min

Max Unit Notes

Read Cycle Time Clock High to Clock High

tKHKH

16

—

20

—

ns 1, 2

Clock Low Pulse Width

tKLKH

5

—

5

—

ns

Clock High Pulse Width

tKHKL

7

—

7

—

ns

Clock High to Output Valid

tKHQV

—

6

—

7.5

ns

3

Clock (K) High to Output Low Z After Write

tKHQX1

0

—

0

—

ns

Output Hold from Clock High

tKHQX2

2

—

3

—

ns 3, 4

Setup Times:

A

tAVKL

2

—

2

—

ns

W tWHKH

2

2

PIE tPIEHKH

2

2

SIE tSIEHKH

2

2

Hold Times:

A

tKLAX

2

—

2

—

ns

W tKHWX

2

2

PIE tKHPIEX

2

2

SIE tKHSIEX

2

2

Output Enable High to Q High–Z

tPOEHQZ

0

6

0

8

ns

4

tSOEHQZ

Output Hold from Output Enable High

tPOEHQX

2

—

5

—

ns

4

tSOEHQX

Output Enable Low to Q Active

tPOELQX

0

—

0

—

ns

4

tSOELQX

Output Enable Low to Output Valid

tPOELQV

—

5

—

6

ns

tSOELQV

NOTES:

1. A read is defined by W high for the setup and hold times.

2. All read cycle timing is referenced from K, SOE, or POE.

3. K must be at a high level for outputs to transition.

4. Transition is measured ± 500 mV from steady–state voltage with output load of Figure 1B. This parameter is sampled and not 100% tested.

At any given voltage and temperature, tPOEHQZ is less than tPOELQX for a given device, and tSOEHQZ is less than tSOELQX for

a given device.

OUTPUT

AC SPEC LOADS

RL = 50 Ω

Z0 = 50 Ω

VL = 1.5 V

Figure 1A

OUTPUT

255 Ω

+5V

480 Ω

5 pF

Figure 1B

MCM67D709

4

MOTOROLA FAST SRAM

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