A276308A
64K X 8 OTP CMOS EPROM
(December, 2001, Version 1.0)
AMIC Technology, Inc.
Document Title
64K X 8 OTP CMOS EPROM
Revision History
Rev. No. History
Issue Date
Remark
0.0
Initial issue
March 24, 2000
Preliminary
0.1
Change Program Verify VCC to 6.25V
March 14, 2001
1.0
Final spec release
December 17, 2001
A276308A
64K X 8 OTP CMOS EPROM
(December, 2001, Version 1.0)
1
AMIC Technology, Inc.
Features
n
65,536 X 8 bit organization
n
Programming voltage: 12.75V
n
Access time: 55/70/90 ns (max.)
n
Current: Operating: 30mA (max.) at 5MHz
Standby:
100
A (max.)
n
All inputs and outputs are directly TTL-compatible
n
Available in 28-pin DIP and 32-PLCC packages
General Description
The A276308A chip is a high-performance 524,288 bit
one-time programmable read only memory (OTP
EPROM) organized as 64K by 8 bits. The A276308A
requires only 5V power supply in normal read mode
operation and any input signals are TTL levels. The
A276308A is available in industry standard 28 pin dual-in-
line and 32 lead PLCC packages.
Pin Configurations
n
DIP
n
PLCC
A276308AL
A6
A10
NC
I/O
6
CE
A15
A12
A7
A6
A5
A4
A3
A2
A1
A0
I/O
0
I/O
1
I/O
3
I/O
4
I/O
5
A11
A9
A13
VCC
A10
A276308A
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
OE / VPP
A8
I/O
2
GND
I/O
6
I/O
7
CE
A14
A5
A4
A3
A2
A1
A0
NC
I/O
0
I/O
7
A11
A9
A8
A7
A12
A15
NC
VCC
A14
A13
I/O
1
I/O
2
GND
NC
I/O
3
I/O
4
I/O
5
1
2
3
4
5
6
7
8
9
10
11
12
13
32
31
30
14
16
15
17
18
19
20
21
22
23
24
25
26
27
28
29
OE / VPP
A276308A
(December, 2001, Version 1.0)
2
AMIC Technology, Inc.
Pin Configurations
Pin Name
Function
A0-A15
Address Inputs
I/O
7
-I/O
0
Data Inputs / Outputs
CE
Chip Enable
OE / VPP
Output Enable / Program Power Supply
VCC
Power Supply
GND
Ground
NC
No Internal Connection
Operating Modes and Truth Table
Mode
CE
OE / VPP
A0
A1
A9
VCC
I/O
7
-I/O
0
Read
V
IL
V
IL
X
X
X
VCC
Data Out
Output Disable
V
IL
V
IH
X
X
X
VCC
Hi-Z
Standby
V
IH
X
X
X
X
VCC
Hi-Z
Program
V
IL
12.75V
X
X
X
6.25V
Data In
Program Verify
V
IL
V
IL
X
X
X
6.25V
Data Out
Program Inhibit
V
IH
12.75V
X
X
X
6.25V
Hi-Z
Manufacturer Code
(3)
V
IL
V
IL
V
IL
V
IL
V
ID
VCC
37H
Device Code
(3)
V
IL
V
IL
V
IH
V
IL
V
ID
VCC
2CH
Continuation Code
(3)
V
IL
V
IL
V
IL
V
IH
V
ID
VCC
7FH
Notes:
1. X = Either V
IH
or V
IL
.
2. V
ID
= 12V
0.5V.
3. A2 ~ A8 = A10 ~ A15 = V
IL
(For auto identification)
A276308A
(December, 2001, Version 1.0)
3
AMIC Technology, Inc.
Functional Description
Read Mode
The A276308A has two control functions, both of which
must be logically active in order to obtain data at the
outputs. CE is the power control and should be used for
device selection. OE is the output control and should be
used to data to the output pins, which is independent of
device selection. Assuming that addresses are stable,
address access time (t
AA
) is equal to the delay from CE
to output (t
CE
). Data is available at the output after a delay
(t
OE
) from the falling edge of OE , as long as CE has
been low and the addresses have been stable for at least
t
AA
- t
OE
.
Standby Mode
The A276308A has a standby mode which reduces the
active current from 30mA to 100
A. The A276308A is
placed in the standby mode by applying a CMOS high
signal to CE . When in the standby mode, the output are
in a high impedance state, independent of the OE .
Auto Identify Mode
The auto identify mode allows the reading out of a binary
code from a EPROM that will identify its manufacturer and
type. This mode is intended for use by programming
equipment for the purpose of automatically matching the
device to be programmed with its corresponding
programming algorithm.
To activate the mode, the programming equipment must
apply 12.0V
0.5V on address line A9 of the A276308A.
Three identification code can be read from data output pin
by toggling A0 and A1. The other addresses must be held
at V
IL
during this mode. Byte 0 (with A0 at V
IL
, A1 at V
IL
)
represents the manufacturer code which is 37H. Byte 1
and Byte 2 represent the device code and continuation
code, which is 2CH and 7FH respectively. All identifiers for
these codes will possess odd parity, with MSB (IO
7
)
defined the parity bit.
Absolute Maximum Ratings*
Ambient Operating Temperature (T
A
) . . . . -10
C to +85
C
Storage Temperature Plastic Package (T
STG
) . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -55
C to 125
C
Applied Input Voltage (V
I
):
All Pins Except A9, VPP and VCC . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . -0.6V to VCC + 0.6V
A9, VPP . . . . . . . . . . . . . . . . . . . . . . . . -0.6V to 13.5V
VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.6V to 7.0V
Output Voltage (V
O
) . . . . . . . . . . . . -0.6V to 7.0V (Note 1)
*Comments
Stresses above those listed under "Absolute Maximum
Ratings" may cause permanent damage to this device.
These are stress ratings only. Functional operation of this
device at these or any other conditions above those
indicated in the operational sections of this specification
is not implied or intended. Exposure to the absolute
maximum rating conditions for extended periods may
affect device reliability.
Notes:
1. During voltage transitions, the input may undershoot GND to -2.0V for periods less than 20 ns. Maximum DC voltage on
input and I/O may overshoot to VCC + 2.0V for periods less than 20 ns.
2. When transitions, A9 and VPP may undershoot GND to -2.0V for periods less than 20 ns. Maximum DC input voltage
on A9 and VPP is +13.5V which may overshoot to 14.0V for period less than 20 ns.
A276308A
(December, 2001, Version 1.0)
4
AMIC Technology, Inc.
Read Mode DC Electrical Characteristics
(Ta = 0
C to 70
C, VCC = 5V
10%, VPP = VCC)
Symbol
Parameter
Min.
Max.
Unit
Conditions
V
OH
Output High Voltage
2.4
V
I
OH
= -400
A
V
OL
Output Low Voltage
0.4
V
I
OL
= 2.1mA
V
IH
Input High Voltage
2.0
VCC + 0.5
V
V
IL
Input Low Voltage
-0.5
0.8
V
I
LI
Input Leakage Current
-1
+1
A
VCC = max.
Vin = 0V to VCC
I
LO
Output Leakage Current
-1
+1
A
VCC = max.
Vout = 0V to VCC
I
CC
VCC Read Operating Current
30
mA
VCC = max.
CE = V
IL
, OE = V
IL
Iout = 0mA, at 5MHz
I
SB
VCC Standby Current (TTL)
1
mA
VCC = max. CE = V
IH
I
SB1
VCC Standby Current (CMOS)
100
A
VCC = max.
CE = VCC - 0.2V
I
PP
VPP Current During Read
10
A
CE = OE = V
IL
,
VPP = VCC
I
ID
A9 Auto Select Current
100
A
A9 = V
ID
, VCC = max.
Capacitance
(T
A
= 25
C, f = 1.0MHz)
Symbol
Parameter
Min.
Max.
Unit
Conditions
C
IN
Input Capacitance
8
pF
V
IN
= 0V
C
Out
Output Capacitance
8
pF
V
Out
= 0V
* These parameters are sampled and not 100% tested.
A276308A
(December, 2001, Version 1.0)
5
AMIC Technology, Inc.
Read Mode AC Characteristics
(Ta = 0
C to 70
C, VCC = 5V
10%, VPP = VCC)
Symbol
Parameter
55ns
70ns
90ns
Unit
Min.
Max.
Min.
Max.
Min.
Max.
t
CYC
Cycle Time
55
70
90
ns
t
AA
Address Access Time
55
70
90
ns
t
CE
Chip Enable Access Time
55
70
90
ns
t
OE
Output Enable Access Time
30
35
40
ns
t
OH
Output Hold after Address, CE or
OE , whichever Occurred First
0
0
0
ns
t
HZ
Output High Z Delay
20
20
25
ns
Read Mode Switching Waveforms
t
OH
t
HZ
High-Z
t
AA
t
OE
t
CE
Valid
Output
Address Valid
ADDRESS
CE
OE / VPP
OUTPUT
t
CYC
A276308A
(December, 2001, Version 1.0)
6
AMIC Technology, Inc.
AC Measurement Conditions
for 55 ns
Input Rise and Fall Times
10 ns
,
Input Pulse Voltage: 0V to 3Volt
Input and Output Timing Ref. Voltage: 1.5Volt
3.0V
0V
1.5V
1.5V
TEST
POINTS
INPUT
OUTPUT
for 70/90 ns
Input Rise and Fall Times
10 ns
,
Input Pulse Voltage: 0.4V to 2.4Volt
Input and Output Timing Ref. Voltage: 0.8V to 2.0Volt
2.4V
0.4V
2.0V
2.0V
TEST
POINTS
INPUT
OUTPUT
0.8V
0.8V
AC Testing Load Circuit
C
L
= 30pF or 100pF
OUT
3.3K
1N914
1.3V
DEVICE
UNDER
TEST
C
L
= 30pF for 55 ns
C
L
= 100pF for 70/90 ns
C
L
includes JIG capacitance
A276308A
(December, 2001, Version 1.0)
7
AMIC Technology, Inc.
Programming and Program Verify
The programming flowchart is shown in Page 10.
The A276308A is shipped with all bits being set to "1".
Programming causes relevant bits to be changed to "0".
The programming mode is started by setting VCC to
6.25V, OE /VPP to +12.75V and CE is at V
IL
. Data to
be programmed can be directly input in the 8 bit format
through the data bus.
The write programming algorithm reduces programming
time by using 100
s pulse followed by a byte verification
to determine whether the byte has been successfully
programmed. If the data does not pass the verification,
an additional pulse programming is applied for a
maximum of 25 pulses. On completion of 1 byte
programming and, The verified address is incremented.
After the final address is completed, all bytes are verified
again with VCC = 5.0 Volt.
Program Inhibit
This mode is used to program one of multiple A276308A
whose VCC, address bus and data bus are connected in
parallel. When programming is performed, other
A276308A can be inhibited from being programmed by
setting their CE pins to V
IH
and OE /VPP pins to
+12.75V.
Programming Mode DC Characteristics
(Ta = 0
C to 70
C, VCC = 6.25V
0.25V, VPP = 12.75V
0.25V)
Symbol
Parameter
Min.
Max.
Unit
Test Conditions
V
OH
Output High Voltage
2.4
V
I
OH
= -400
A
V
OL
Output Low Voltage
0.4
V
I
OL
= 2.1mA
V
IH
Input High Voltage
2.0
VCC + 0.5
V
V
IL
Input Low Voltage
-0.5
0.8
V
I
LI
Input Leakage Current
-1
+1
A
VCC = max. Vin = 0V to VCC
I
CC
VCC Current During Program
50
mA
I
PP
VPP Current During Program
50
mA
CE = V
IL
V
ID
A9 Auto Select Voltage
11.5
12.5
V
A9 = V
ID
VCC1
Programming Supply Voltage
6.0
6.5
V
VPP1
Programming Voltage
12.5
13
V
Note: VCC must be applied simultaneously or before VPP and removed simultaneously or after VPP.
A276308A
(December, 2001, Version 1.0)
8
AMIC Technology, Inc.
Programming Mode AC Characteristics
(Ta = 0
C to 70
C, VCC= 6.25V
0.25V, VPP = 12.75V
0.25V)
Symbol
Parameter
Min.
Max.
Unit
t
AS
Address Valid to Program Low
2
s
t
DS
Input Valid to Program Low
2
s
t
VPS
VPP Set up Time
2
s
t
VCS
VCC Set up Time
2
s
t
PW
Program Pulse Width
95
105
s
t
DH
Data Hold Time
2
s
t
VR
OE / VPP Recovery Time
2
s
t
DV
Data Valid from CE
100
ns
t
DFP
Chip Enable to Output Float Delay
130
ns
t
AH
Address Hold Time
0
ns
A276308A
(December, 2001, Version 1.0)
9
AMIC Technology, Inc.
Programming and Verify Mode AC Waveforms
t
PW
t
VCS
t
VPS
t
DS
t
AS
PROGRAM
PROGRAM VERIFY
VALID
DATA IN
DATA OUT
t
DH
ADDRESS
DATA
OE / VPP
VCC
CE V
IH
VCC
VCC1
VCC
VPP1
V
IL
V
IH
V
IL
Hi-Z
t
VPS
t
DV
t
DFP
t
AH
t
VR
A276308A
(December, 2001, Version 1.0)
10
AMIC Technology, Inc.
Programming Flowchart
START
ADDRESS=FIRST LOCATION
VCC=6.25V
VPP=12.75V
X = 0
PROGRAM ONE 100s PULSE
INCREMENT X
X = 25?
VERIFY BYTE
LAST ADDRESS
VCC=VPP=5.0V
VERIFY ALL
BYTES ?
DEVICE PASSED
DEVICE FAILED
INCREMENT ADDRESS
FAIL
NO
YES
NO
PASS
YES
FAIL
PASS
VERIFY BYTE
PASS
FAIL
VERIFY
SECTION
INTERACTIVE
SECTION
A276308A
(December, 2001, Version 1.0)
11
AMIC Technology, Inc.
Ordering Information
Part No.
Access Time (ns)
Operating Current
Max. (mA) at 5MHz
Standby Current
Max. (
A
)
Package
A276308A-55
55
30
100
28Pin DIP
A276308AL-55
55
30
100
32Pin PLCC
A276308A-70
70
30
100
28Pin DIP
A276308AL-70
70
30
100
32Pin PLCC
A276308A-90
90
30
100
28Pin DIP
A276308AL-90
90
30
100
32Pin PLCC
A276308A
(December, 2001, Version 1.0)
12
AMIC Technology, Inc.
Package Information
P-DIP 28L Outline Dimensions
unit: inches/mm
1
28
E
1
S
A
2
A
L
E
e
A
D
C
B
1
B
A
1
Base Plane
Seating Plane
14
15
e
Dimensions in inches
Dimensions in mm
Symbol
Min
Nom
Max
Min
Nom
Max
A
-
-
0.210
-
-
5.33
A
1
0.010
-
-
0.25
-
-
A
2
0.150
0.155
0.160
3.81
3.94
4.06
B
0.016
0.018
0.022
0.41
0.46
0.56
B
1
0.058
0.060
0.064
1.47
1.52
1.63
C
0.008
0.010
0.014
0.20
0.25
0.36
D
-
1.460
1.470
-
37.08
37.34
E
0.590
0.600
0.610
14.99
15.24
15.49
E
1
0.540
0.545
0.550
13.72
13.84
13.97
e
0.090
0.100
0.110
2.29
2.54
2.79
L
0.120
0.130
0.140
3.05
3.30
3.56
0
-
15
0
-
15
e
A
0.630
0.650
0.670
16.00
16.51
17.02
S
-
-
0.090
-
-
2.29
Notes:
1. The maximum value of dimension D includes end flash.
2. Dimension E
1
does not include resin fins.
3. Dimension S includes end flash.
A276308A
(December, 2001, Version 1.0)
13
AMIC Technology, Inc.
Package Information
PLCC 32L Outline Dimension
unit: inches/mm
A
1
A
2
A
e
D y
H
D
D
13
G
D
b
1
b
G
E
c
5
14
20
21
29
30
32
1
4
E
H
E
L
Dimensions in inches
Dimensions in mm
Symbol
Min
Nom
Max
Min
Nom
Max
A
-
-
0.134
-
-
3.40
A
1
0.0185
-
-
0.47
-
-
A
2
0.105
0.110
0.115
2.67
2.80
2.93
b
1
0.026
0.028
0.032
0.66
0.71
0.81
b
0.016
0.018
0.021
0.41
0.46
0.54
C
0.008
0.010
0.014
0.20
0.254
0.35
D
0.547
0.550
0.553
13.89
13.97
14.05
E
0.447
0.450
0.453
11.35
11.43
11.51
e
0.044
0.050
0.056
1.12
1.27
1.42
G
D
0.490
0.510
0.530
12.45
12.95
13.46
G
E
0.390
0.410
0.430
9.91
10.41
10.92
H
D
0.585
0.590
0.595
14.86
14.99
15.11
H
E
0.485
0.490
0.495
12.32
12.45
12.57
L
0.075
0.090
0.095
1.91
2.29
2.41
y
-
-
0.003
-
-
0.075
0
-
10
0
-
10
Notes:
1. Dimensions D and E do not include resin fins.
2. Dimensions G
D
& G
E
are for PC Board surface mount pad pitch
design reference only.
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