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M27C256B Schematic ( PDF Datasheet ) - STMicroelectronics

Teilenummer M27C256B
Beschreibung 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM
Hersteller STMicroelectronics
Logo STMicroelectronics Logo 




Gesamt 24 Seiten
M27C256B Datasheet, Funktion
M27C256B
256 Kbit (32Kb × 8) UV EPROM and OTP EPROM
Feature summary
5V ± 10% supply voltage in Read operation
Access time: 45ns
Low power consumption:
– Active Current 30mA at 5MHz
– Standby Current 100µA
Programming voltage: 12.75V ± 0.25V
Programming time: 100µs/Word
Electronic signature
– Manufacturer Code: 20h
– Device Code: 8Dh
ECOPACK® packages available
28
1
FDIP28W (F)
28
1
PDIP28 (B)
PLCC32 (C)
May 2006
Rev 2
1/24
www.st.com
1






M27C256B Datasheet, Funktion
Summary description
Table 1.
A0-A14
Q0-Q7
E
G
VPP
VCC
VSS
NC
DU
Signal names
Figure 2. DIP connections
Address Inputs
Data Outputs
Chip Enable
Output Enable
Program Supply
Supply Voltage
Ground
Not Connected Internally
Don’t Use
VPP
A12
A7
A6
A5
A4
A3
A2
A1
A0
Q0
Q1
Q2
VSS
1 28
2 27
3 26
4 25
5 24
6 23
7 22
M27C256B
8 21
9 20
10 19
11 18
12 17
13 16
14 15
VCC
A14
A13
A8
A9
A11
G
A10
E
Q7
Q6
Q5
Q4
Q3
AI00756
M27C256B
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M27C256B pdf, datenblatt
Maximum rating
3 Maximum rating
M27C256B
Stressing the device above the rating listed in the Absolute Maximum Ratings table may
cause permanent damage to the device. These are stress ratings only and operation of the
device at these or any other conditions above those indicated in the Operating sections of
this specification is not implied. Exposure to Absolute Maximum Rating conditions for
extended periods may affect device reliability. Refer also to the STMicroelectronics SURE
Program and other relevant quality documents.
Table 4. Absolute maximum ratings
Symbol
Parameter
Value
Unit
TA Ambient Operating Temperature(1)
–40 to 125
°C
TBIAS Temperature Under Bias
–50 to 125
°C
TSTG
VIO(2)
Storage Temperature
Input or Output Voltage (except A9)
–65 to 150
–2 to 7
°C
V
VCC
VA9(2)
Supply Voltage
A9 Voltage
–2 to 7
–2 to 13.5
V
V
VPP Program Supply Voltage
–2 to 14
V
1. Depends on range.
2. Minimum DC voltage on Input or Output is –0.5V with possible undershoot to –2.0V for a period less than
20ns. Maximum DC voltage on Output is VCC +0.5V with possible overshoot to VCC +2V for a period less
than 20ns.
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