A276308
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.
Programming and Program Verify
The programming flowchart is shown in Page 10.
The A276308 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
Program Inhibit
6.25V, OE /VPP to +12.75V and CE is at VIL. Data to
be programmed can be directly input in the 8 bit format
through the data bus.
This mode is used to program one of multiple A276308
whose VCC, address bus and data bus are connected in
parallel. When programming is performed, other
A276308 can be inhibited from being programmed by
The write programming algorithm reduces programming
time by using 100ms pulse followed by a byte verification
to determine whether the byte has been successfully
programmed. If the data does not pass the verification,
setting their CE pins to VIH 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
VOH
VOL
VIH
Parameter
Output High Voltage
Min.
Max.
Unit
V
Test Conditions
IOH = -400mA
2.4
Output Low Voltage
0.4
VCC + 0.5
0.8
V
IOL = 2.1mA
Input High Voltage
2.0
-0.5
-1
V
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VIL
Input Low Voltage
V
ILI
Input Leakage Current
VCC Current During Program
VPP Current During Program
+1
VCC = max. Vin = 0V to VCC
mA
mA
mA
ICC
50
IPP
50
CE = VIL
A9 = VID
VID
A9 Auto Select Voltage
Programming Supply Voltage
Programming Voltage
11.5
6.0
12.5
6.5
13
V
V
V
VCC1
VPP1
12.5
Note: VCC must be applied simultaneously or before VPP and removed simultaneously or after VPP.
PRELIMINARY
(December, 1998, Version 0.1)
7
AMIC Technology, Inc.
AMICC [ AMIC TECHNOLOGY ]
