M27C801-100B1 STMicroelectronics, M27C801-100B1 Datasheet - Page 9

IC OTP 8MBIT 100NS 32DIP

M27C801-100B1

Manufacturer Part Number
M27C801-100B1
Description
IC OTP 8MBIT 100NS 32DIP
Manufacturer
STMicroelectronics
Datasheets

Specifications of M27C801-100B1

Format - Memory
EPROMs
Memory Type
OTP EPROM
Memory Size
8M (1M x 8)
Speed
100ns
Interface
Parallel
Voltage - Supply
4.5 V ~ 5.5 V
Operating Temperature
0°C ~ 70°C
Package / Case
32-DIP (0.600", 15.24mm)
Organization
1Mx8
Interface Type
Parallel
In System Programmable
External
Access Time (max)
100ns
Package Type
PDIP
Reprogramming Technique
OTP
Operating Supply Voltage (typ)
5V
Operating Supply Voltage (min)
4.5V
Operating Supply Voltage (max)
5.5V
Supply Current
50mA
Pin Count
32
Mounting
Through Hole
Operating Temp Range
0C to 70C
Operating Temperature Classification
Commercial
Capacitance, Input
6 pF
Capacitance, Output
12 pF
Current, Input, Leakage
±10 μA
Current, Operating
35 mA
Current, Output, Leakage
±10
Current, Supply
35 mA (Max.)
Density
8M
Temperature, Operating
0 to +70 °C
Temperature, Operating, Maximum
70 °C
Temperature, Operating, Minimum
0 °C
Time, Access
100 ns
Time, Fall
≤20 ns
Time, Rise
≤20 ns
Voltage, Input, High
6 V
Voltage, Input, High Level
2 V (Min.)
Voltage, Input, Low
0.8 V
Voltage, Input, Low Level
0.80 V (Max.)
Voltage, Output, High
3.6 V (TTL), 4.3 V (CMOS)
Voltage, Output, Low
0.4 V
Voltage, Supply
5 V
Access Time
45ns
Low Power Consumption
- Active current 35mA at 5 MHz - Standby current 100 μA
Programming Voltage
12.75 V ± 0.25 V
Memory Configuration
1M X 8
Supply Voltage Range
4.5V To 5V
Memory Case Style
DIP
No. Of Pins
32
Rohs Compliant
Yes
Operating Temperature Range
0°C To +70°C
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
497-1687-5

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M27C801
2.4
2.5
2.6
ensures that all deselected memory devices are in their low power standby mode and that
the output pins are only active when data is required from a particular memory device.
System considerations
The power switching characteristics of Advanced CMOS EPROMs require careful
decoupling of the devices. The supply current, I
the system designer: the standby current level, the active current level, and transient current
peaks that are produced by the falling and rising edges of E. The magnitude of the transient
current peaks is dependent on the capacitive and inductive loading of the device at the
output. The associated transient voltage peaks can be suppressed by complying with the
two line output control and by properly selected decoupling capacitors. It is recommended
that a 0.1µF ceramic capacitor be used on every device between V
be a high frequency capacitor of low inherent inductance and should be placed as close to
the device as possible. In addition, a 4.7µF bulk electrolytic capacitor should be used
between V
power supply connection point. The purpose of the bulk capacitor is to overcome the voltage
drop caused by the inductive effects of PCB traces.
Programming
When delivered (and after each erasure for UV EPROM), all bits of the M27C801 are in the
'1' state. Data is introduced by selectively programming '0's into the desired bit locations.
Although only '0' will be programmed, both '1's and '0's can be present in the data word. The
only way to change a '0' to a '1' is by die exposure to ultraviolet light (UV EPROM). The
M27C801 is in the programming mode when V
The data to be programmed is applied to 8 bits in parallel to the data output pins. The levels
required for the address and data inputs are TTL. V
Presto IIB programming algorithm
Presto IIB Programming Algorithm allows the whole array to be programmed with a
guaranteed margin, in a typical time of 52.5 seconds. This can be achieved with
STMicroelectronics M27C801 due to several design innovations to improve programming
efficiency and to provide adequate margin for reliability. Before starting the programming the
internal Margin Mode circuit is set in order to guarantee that each cell is programmed with
enough margin. Then a sequence of 50 µs program pulses are applied to each byte until a
correct Verify occurs (see
Margin Mode provides the necessary margin.
CC
and V
SS
for every eight devices. The bulk capacitor should be located near the
Figure
4). No overprogram pulses are applied since the Verify in
PP
CC
, has three segments that are of interest to
input is at 12.75V and E is pulsed to V
CC
is specified to be 6.25V ± 0.25V.
CC
and V
Device description
SS
. This should
9/24
IL
.

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