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PDF CY27H512 Data sheet ( Hoja de datos )
| Número de pieza | CY27H512 | |
| Descripción | 64K x 8 High Speed CMOS EPROM | |
| Fabricantes | Cypress Semiconductor | |
| Logotipo |  |
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Features
D CMOS for optimum speed/power
D High speed
Ċ tAA = 25 ns max. (commercial)
Ċ tAA = 35 ns max. (military)
D Low power
Ċ 275 mW max.
Ċ Less than 85 mW when deselected
D ByteĆwide memory organization
D 100% reprogrammable in the
windowed package
D EPROM technology
D Capable of withstanding >2001V
static discharge
D Available in
Ċ 32Ćpin PLCC
Ċ 28Ćpin TSOPĆI
Ċ 28Ćpin, 600Ćmil plastic or
Ċ hermetic DIP
32Ćpin hermetic LCC
PRELIMINARY
CY27H512
64K x 8 HighĆSpeeEdPCRMOOMS
Functional Description
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Logic Block Diagram
Pin Configurations
A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14
A15
ADDRESS
DECODER
PROGRAMMABLE
ARRAY
MULTIPLEXER
POWER DOWN
O0
O1
O2
O3
O4
O5
O6
O7
CE
OE
OUTPUT ENABLE
DECODER
H512Ć1
DIP
Top View
A15
A12
A7
A6
A5
A4
A3
A2
A1
A0
O0
O1
O2
GND
1
2
3
4
5
6
7
8
9
10
11
12
13
14
28
27
26
25
24
23
22
21
20
19
18
17
16
15
VCC
A14
A13
A8
A9
A11
OE/VPP
A10
CE
O7
O6
O5
O4
O3
H512Ć2
[1]
LCC/PLCC
Top View
A6
A5
A4
A3
A2
A1
A0
NC
O0
4 3 2 1 32 31 30
5
6
7
8
9
10
11
12
13
29
28
27
26
25
24
23
22
21
14 15 16 17 1819 20
A8
A9
A11
NC
OE/VPP
A10
CE
O7
O6
H512Ć3
N1.oteFt:aocrhLpCaCd./PTLhCeCy sohnolyu:ldPinnost1baendus1e7da.recommonandtiedtothedieatĆ
Cypress Semiconductor Corporation D 3901 North First S1treet D San Jose D CA 95134 D N40o8v-em94b3e-r 12969040
1 page  
PRELIMINARY
CY27H512
Erasure Characteristics
Wavelengths of light less than 4000 Angstroms begin to erase the
CY27H512 in the windowed package. For this reason, an opaque
label should be placed over the window if the EPROM is exposed
to sunlight or fluorescent lighting for extended periods of time.
The recommended dose of ultraviolet light for erasure is a waveĆ
length of 2537 Angstroms for a minimum dose (UV intensity mulĆ
tiplied by exposure time) of 25 Wsec/cm2. For an ultraviolet lamp
with a 12 mW/cm2 power rating, the exposure time would be apĆ
proximately 35 minutes. The CY27H512 needs to be within 1 inch
of the lamp during erasure. Permanent damage may result if the
EPROM is exposed to highĆintensity UV light for an extended peĆ
riod of time. 7258 Wsec/cm2 is the recommended maximum
dosage.
Programming Modes
Programming support is available from Cypress as well as from a
number of thirdĆparty software vendors. For detailed programĆ
ming information, including a listing of software packages, please
see the PROM Programming Information located at the end of
this section. Programming algorithms can be obtained from any
Cypress representative.
Table 1. Programming Electrical Characteristics
Parameter
VPP
IPP
VIHP
VILP
VCCP
Description
Programming Power Supply
Programming Supply Current
Programming Input Voltage HIGH
Programming Input Voltage LOW
Programming VCC
Min.
12.5
3.0
-0.5
6.0
Max.
13
50
VCC
0.4
6.5
Unit
V
mA
V
V
V
Mode
Read
Output Disable
StandĆby
Program
Program Verify
Program Inhibit
Signature Read (MFG)
Signature Read (DEV)
Note:
8. X can be VIL or VIH.
Table 2. Mode Selection
CE
VIL
X
VIH
VILP
VILP
VIHP
VIL
VIL
OE/VPP
VIL
VIH
X
VPP
VILP
VPP
VIL
VIL
Pin Function[8]
A0
A0
A0
X
A0
A0
A0
VIL
VIH
A9
A9
A9
X
A9
A9
A9
VHV[9]
VHV[9]
9. VHV=12±0.5V
Data
O7 - O0
High Z
High Z
D7 - D0
O7 - O0
High Z
34H
1FH
5
5 Page 
Package Diagrams
PRELIMINARY
28ĆLead (600ĆMil) Windowed CerDIP W16
MIL-STD-1835 D-10 Config. A
CY27H512
28ĆLead Thin Small Outline Package Z28
E Cypress Semiconductor Corporation, 1994. The information contained herein is subject to change without notice.
Cypress Semiconductor Corporation assumes no responsibility for
the use of any circuitry other than circuitry embodied in a Cypress Semiconductor Corporation product. Nor does it convey or imply any license under patent or other rights. Cypress SemiconĆ
11ductor does not authorize its products for use as critical components in lifeĆsupport systems where a malfunction or failure of the product may reasonably be expected to result in significant
injury to the user. The inclusion of Cypress Semiconductor products in lifeĆsupport systems applications implies that the manufacturer assumes all risk of such use and in so doing indemnifies
Cypress Semiconductor against all damages.
11 Page | ||
| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet CY27H512.PDF ] | |
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