AT27C256R-45JU Ver la hoja de datos (PDF) - Atmel Corporation

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Fabricante

AT27C256R-45JU

256K (32K x 8) One-time Programmable, Read-only Memory

Atmel Corporation 

Figure 5-3. Output test load

Note: 1. CL = 100pF including jig capacitance, except for the -45 devices, where CL = 30pF.

Table 5-5. Pin capacitance

f = 1MHz, T = 25°C(1)

Symbol

Typ

Max

Units

CIN

COUT

Note:

4

6

pF

8

12

pF

1. Typical values for nominal supply voltage. This parameter is only sampled, and is not 100% tested.

Conditions

VIN = 0V

VOUT = 0V

Figure 5-4. Programming Waveforms(1)

Notes:

1. The input timing reference is 0.8V for VIL and 2.0V for VIH.

2. tOE and tDFP are characteristics of the device, but must be accommodated by the programmer.

3. When programming the Atmel AT27C256R, a 0.1µF capacitor is required across VPP and ground to suppress spurious volt-

age transients.

6

Atmel AT27C256R

0014O–EPROM–10/11

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