27C256-12I/L Microchip Technology, 27C256-12I/L Datasheet - Page 3

• Manufacturer Part Number: 27C256-12I/L
• Description: IC OTP 256KBIT 120NS 32PLCC
• Manufacturer: Microchip Technology

Specifications of 27C256-12I/L

• Format - Memory: EPROMs
• Memory Type: OTP EPROM
• Memory Size: 256K (32K x 8)
• Speed: 120ns
• Interface: Parallel
• Voltage - Supply: 4.5 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 32-PLCC
• Lead Free Status / RoHS Status: Request inventory verification / Request inventory verification

TABLE 1-3:
FIGURE 1-1:
Address to Output
Delay
CE to Output Delay
OE to Output Delay
CE or OE to O/P
High Impedance
Output Hold from
Address CE or OE,
whichever goes first
* -10, -90 AC Testing Waveform: V
Output Load: 1 TTL Load + 30pF
Address
Outputs
O0 - O7
Notes:
2004 Microchip Technology Inc.
Parameter
CE
OE
(1) t
(2) OE may be delayed up to t
(3) This parameter is sampled and is not 100% tested.
V
V
V
V
V
V
V
V
IH
IL
IH
IL
IH
IL
OH
OL
OFF
READ OPERATION AC CHARACTERISTICS
READ WAVEFORMS
is specified for OE or CE, whichever occurs first
t
t
t
t
t
Sym
ACC
CE
OE
OFF
OH
High Z
27C256-90* 27C256-10* 27C256-12 27C256-15 27C256-20
Min
IH
—
—
—
0
0
AC Testing Waveform:
Output Load:
Input Rise and Fall Times: 10 ns
Ambient Temperature:
= 2.4V and V
Max
90
90
40
30
—
CE
- t
Min
IL
OE
—
—
—
0
0
= .45V; V
after the falling edge of CE without impact on t
Max
100
100
45
30
—
t
ACC
OH
Address Valid
Min Max
t
= 1.5V and V
—
—
—
CE(2)
0
0
V
1 TTL Load + 100 pF
Commercial:
Industrial:
Automotive:
IH
= 2.4V and V
t
OE(2)
120
120
55
35
—
OL
Min Max Min Max
—
—
—
0
0
= 1.5V
IL
150
150
65
50
—
Valid Output
= 0.45V; V
—
—
—
0
0
Tamb =
Tamb = -40 C to +125 C
Tamb = -40°C to +85°C
OH
200
200
75
55
—
= 2.0V V
t
OH
CE
0°C to +70°C
t
Units Conditions
OFF(1,3)
27C256
ns
ns
ns
ns
ns
DS11001N-page 3
OL
CE=OE =V
CE = V
OE = V
= 0.8V
High Z
IL
IL
IL