27C256-12/L Microchip Technology, 27C256-12/L Datasheet - Page 4

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

Specifications of 27C256-12/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: 0°C ~ 70°C
• Package / Case: 32-PLCC
• Lead Free Status / RoHS Status: Request inventory verification / Request inventory verification

27C256
TABLE 1-4:
TABLE 1-5:
DS11001N-page 4
Input Voltages
Input Leakage
Output Voltages
V
V
A9 Product Identification
Note 1: V
for Program, Program Verify
and Program Inhibit Modes
Address Set-Up Time
Data Set-Up Time
Data Hold Time
Address Hold Time
Float Delay (2)
V
Program Pulse Width (1)
CE Set-Up Time
OE Set-Up Time
V
Data Valid from OE
Note 1: For express algorithm, initial programming width tolerance is 100 s 5%.
CC
PP
CC
PP
Current, program
Set-Up Time
Current, program & verify
Set-Up Time
2: This parameter is only sampled and not 100% tested. Output float is defined as the point where data is no
longer driven (see timing diagram).
Parameter
CC
must be applied simultaneously or before V
PROGRAMMING DC CHARACTERISTICS
PROGRAMMING AC CHARACTERISTICS
Parameter
Logic”1”
Logic”0”
Logic”1”
Logic”0”
Status
—
—
—
—
AC Testing Waveform:
Output Load:
Ambient Temperature:
V
CC
= 6.5V
Symbol
I
V
I
V
V
V
CC 2
PP 2
V
I
OH
LI
OL
IH
IL
H
0.25V, V
Ambient Temperature: Tamb = 25 C
V
11.5
Min
-0.1
2.0
-10
2.4
PP
—
—
Symbol
CC
t
t
t
PP
t
t
t
t
t
VCS
CES
OES
t
t
t
VPS
and removed simultaneously or after V
PW
AS
DS
DH
AH
DF
OE
= 6.5V
= V
V
1 TTL Load + 100pF
Tamb=25 C
V
IH
Max.
0.45
12.5
CC
0.8
10
20
25
=2.4V and V
H
+1
= 13.0V
Min.
0.25V, V
95
—
2
2
2
0
0
2
2
2
2
Units
mA
mA
V
V
V
V
V
A
Max.
5 C
130
105
100
—
—
—
—
—
—
—
—
0.25V
IL
PP
=0.45V; V
V
I
I
Note 1
Note 1
= V
OH
OL
IN
Units
H
= 2.1 mA
= 0V to V
= -400 A
ns
ns
s
s
s
s
s
s
s
s
s
= 13.0V
2004 Microchip Technology Inc.
OH
100 s typical
=2.0V; V
Conditions
CC
5 C
0.25V
PP
Remarks
OL
=0.8V