Holtek Semiconductor Inc HT27LC512 Datasheet
OTP CMOS 64K×8-Bit EPROM
Features
•
64K×8-bit organization
•
Single +3.3V power supply
•
Programming voltage
–
VPP=12.2V±0.2V
–
VCC=5.8V±0.2V
•
Low power consumption
–
Active: 15mA max.
–
Standby: 1µA typ.
•
Fast read access time: 120ns
•
CMOS and TTL compatible I/O
•
Commercial and industrial temperature range
•
Fast programming algorithm
General Description
The HT27LC512 chip family is a low-power,
512K bit, +3.3V electrically one-time programmable (OTP) read-only memories
(EPROM). Organized into 64K words with 8
bits per word, it features a fast singl e address
location programming, typically at 75
µs per
HT27LC512
•
Read access time: –120ns
•
Programming time 75µs typ.
•
High-reliability CMOS technology
•
Latch-up immunity to 100mA from -1.0V to
V
+1.0V
CC
•
Two line control (OE & CE)
•
Standard product identification code
•
Package type
–
28-pin DIP/SOP
–
32-pin PLCC
•
Commercial temperature ranges
(0
°C to +70°C)
byte. Any byte can be accessed in less than 120ns
wit h respect to Spec. This eliminates the need for
WAIT states in high-performance microprocessor
systems. The HT27 LC5 12 has sep ar ate Out pu t En ab le
(
OE) and Chip Enable (CE) controls which
eliminate bus contention issues.
Block Diagram
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Pin Assignment
Pin Description
Pin Name I/O/C/P Description
A0~A15 I Address input s
DQ0~DQ7 I/O Data inputs/outputs
CE C Chip enable
OE/VPP C/P Output enable/program voltage supply
NC — No connection
HT27LC512
Absolu te Maximum Ra tin g s
Operation Temperature Commercial ...................................................................................0°C to +70°C
Storage Temperature.................................... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .–65
Applied VCC Voltage with Respect to GND.................... .. .. .................... .. .. .................... .. . –0.6V to 7.0V
Applied Voltage on Input Pin with Respect to GND .......... .... .... .... .... .... .... .... .... .... .... .... ... –0.6V to 7.0V
Applied Voltage on Output Pin with Respect to GND ........... .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. –0.6V to V
Applied Voltage on A9 Pin with Respect to GND................................... ........ ...... ........ ... –0.6V to 13.5V
Applied VPP Voltage with Respect to GND.......................................... .... .... .... .... .... .... ....–0.6V to 13.5V
Applied READ V o ltage (Functionality is guaranteed between these limits) ................... +3V to +3.6V
Note: These are stress ratings only. Stresses exceeding the range specified under “Absolute M axi-
mum Ratings” may cause substantial damage to the device. Functional operation of this device
at other conditions beyond those listed in the specification is not implied and prolonged
exposure to extreme condition s may affect device reliability.
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°C to 125°C
+0.5V
CC
D.C. Characteristics
Read operation
Symbol Parameter
V
V
V
V
I
LI
I
LO
I
CC
I
SB1
I
SB2
I
PP
Programming operation
Symbol Parameter
V
V
V
V
I
LI
V
I
CC
I
PP
Output High Level 3.3V IOH=–0.4mA 2.4 — — V
OH
Output Low Level 3.3V IOL=2.0mA — — 0.45 V
OL
Input High Level 3.3V — 2.0 — VCC+0.5 V
IH
Input Low Level 3.3V — –0.3 — 0.8 V
IL
Input Leakage Current 3.3V VIN=0 to 3.6V –5 — 5 µA
Output Leakage Current 3.3V V
VCC Active Current 3.3V
Standby Current (CMOS) 3.3V CE=V
Standby Current (TTL) 3.3V CE=V
VPP Read/Standby Current 3.3V CE=OE=VIL, VPP=V
OH
OL
IH
IL
Output High Level 5.8V IOH=–0.4mA 2.4 — — V
Output Low Level 5.8V IOL=2.1mA — — 0.45 V
Input High Level 5.8V — 0.7V
Input Low Level 5.8V — –0.5 — 0.8 V
Input Load Current 5.8V VIN=VIL, V
H
A9 Product ID Voltage 5.8V — 11.5 — 12.5 V
VCC Supply Current 5.8V — — — 40 mA
VPP Supply Current 5.8V CE=V
Test Conditions
V
CC
Conditions
OUT
CE=VIL, f=5MHz,
I
=0mA
OUT
Test Conditions
V
CC
Conditions
IL
HT27LC512
Min. Typ. Max. Unit
=0 to 3.6V –10 — 10 µA
—— 15 mA
±0.3V — 1.0 10 µA
CC
IH
IH
—— 0.6 mA
—— 100 µA
CC
Min. Typ. Max. Unit
—VCC+0.5 V
CC
— — 5.0 µA
——10mA
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