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

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

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

Figure 7. Programming and Verify Modes AC Waveforms
Figure 8. Programming Flowchart
YES
NO
FAIL
= 25
++n
A0-A19
Q0-Q7
V CC
GV PP
E
V CC = 6.25V, V PP = 12.75V
RESET MARGIN MODE
SET MARGIN MODE
CHECK ALL BYTES
NO
2nd: V CC = 4.2V
1st: V CC = 6V
E = 50 s Pulse
VERIFY
n = 0
Addr
Last
YES
YES
NO
tVCHEL
tVPHEL
tQVEL
tAVEL
++ Addr
DATA IN
AI01271B
PROGRAM
VALID
tELEH
tEHQX
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 pro-
gramming efficiency and to provide adequate mar-
gin 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 50µs pro-
gram pulses are applied to each byte until a cor-
rect verify occurs. No overprogram pulses are
applied since the verify in MARGIN MODE pro-
vides the necessary margin.
Program Inhibit
Programming of multiple M27C801s in parallel
with different data is also easily accomplished. Ex-
cept for E, all like inputs including GV
allel M27C801 may be common. A TTL low level
pulse applied to a M27C801's E input, with V
12.75V, will program that M27C801. A high level E
input inhibits the other M27C801s from being pro-
grammed.
Program Verify
A verify (read) should be performed on the pro-
grammed bits to determine that they were correct-
ly programmed. The verify is accomplished with G
at V
falling edge of E.
tEHVPX
IL
. Data should be verified with t
tVPLEL
VERIFY
tELQV
DATA OUT
tEHAX
tEHQZ
AI01270
ELQV
PP
M27C801
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after the
PP
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