AT27C256R

4.2 DC and AC Operating Range

Table 4-1. DC and AC Operating Range
Mode/Pin	CE	OE	Ai	V_PP	Outputs
Read	V_IL	V_IL	Ai	V_CC	D_OUT
Output disable	V_IL	V_IH	X⁽¹⁾	V_CC	High-Z
Standby	V_IH	X⁽¹⁾	X⁽¹⁾	V_CC	High-Z
Rapid program⁽²⁾	V_IL	V_IH	Ai	V_PP	D_IN
PGM verify⁽²⁾	X⁽¹⁾	V_IL	Ai	V_PP	D_OUT
Optional PGM verify ⁽²⁾	V_IL	V_IL	Ai	V_CC	D_OUT
PGM inhibit⁽²⁾	V_IH	V_IH	X⁽¹⁾	V_PP	High-Z
Product identification⁽⁴⁾	V_IL	V_IL	A9 = V_H⁽³⁾ A0 = V_IH or V_IL A1-A14 = V_IL	V_CC	Identification code

Note:

X can be V_IL or V_IH.
Refer to programming characteristics.
V_H = 12.0 ± 0.5V.
Two identifier bytes may be selected. All Ai inputs are held low (V_IL), except A9, which is set to V_H, and A0, which is toggled low (V_IL) to select the manufacturer’s identification byte and high (V_IH) to select the device code byte.

Table 4-2. DC and AC Operating Conditions for Read Operation
AT27C256R		-45	-70
Operating Temperature (Case)	Industrial Temperature Range	-40°C - 85°C	-40°C - 85°C
V_CC Power Supply		5V ± 10%	5V ± 10%

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