M27C256B-2B6TR View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

M27C256B-2B6TR

256 Kbit (32Kb × 8) UV EPROM and OTP EPROM

STMicroelectronics 

DC and AC parameters

M27C256B

Figure 7. Read mode AC waveforms

A0-A14

E

G

Q0-Q7

VALID

tAVQV

tGLQV

tELQV

tAXQX

VALID

tEHQZ

tGHQZ

Hi-Z

AI00758B

)

Table 9.

Read mode AC characteristics(1) (2)

Symbol Alt

Parameter

M27C256B

Test

Condition

-45(3)

-60

-70

-80 Unit

Min Max Min Max Min Max Min Max

tAVQV

tELQV

tACC

Address Valid to

Output Valid

tCE

Chip Enable Low

to Output Valid

E = VIL,

G = VIL

G = VIL

tGLQV

tOE

Output Enable Low

to Output Valid

E = VIL

tEHQZ(4)

tDF

Chip Enable High

to Output Hi-Z

G = VIL

tGHQZ(4)

tDF

Output Enable

High to Output Hi-Z

E = VIL

tAXQX

Address Transition

tOH to Output

Transition

E = VIL,

G = VIL

45

60

70

80 ns

45

60

70

80 ns

25

30

35

40 ns

0 25 0 30 0 30 0 30 ns

0 25 0 30 0 30 0 30 ns

0

0

0

0

ns

1. TA = 0 to 70°C, –40 to 85°C, –40 to 105°C or –40 to 125°C; VCC = 5V ± 5% or 5V ± 10%; VPP = VCC

2. VCC must be applied simultaneously with or before VPP and removed simultaneously or after VPP.

3. Speed obtained with High Speed AC measurement conditions.

4. Sampled only, not 100% tested.

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