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CY7C027/028
CY7C037/038
Document #: 38-06042 Rev. *C
Page 4 of 20
Maximum Ratings[8]
(Above which the useful life may be impaired. For user guide-
lines, not tested.)
Storage Temperature .................................–65
°C to +150°C
Ambient Temperature with
Power Applied.............................................–55
°C to +125°C
Supply Voltage to Ground Potential ............... –0.3V to +7.0V
DC Voltage Applied to Outputs
in High Z State ............................................ –0.5V to +7.0DC
Input Voltage[9]............................................... –0.5V to +7.0V
Output Current into Outputs (LOW)............................. 20 mA
Static Discharge Voltage........................................... >1100V
Latch-Up Current.................................................... >200 mA
Notes:
8. The Voltage on any input or I/O pin cannot exceed the power pin during power-up.
9. Pulse width < 20 ns.
10. Industrial parts are available in CY7C028 and CY7C038 only.
Pin Definitions
Left Port
Right Port
Description
CE0L, CE1L
CE0R, CE1R
Chip Enable (CE is LOW when CE0 ≤ VIL and CE1 ≥ VIH)
R/WL
R/WR
Read/Write Enable
OEL
OER
Output Enable
A0L–A15L
A0R–A15R
Address (A0–A14 for 32K; A0–A15 for 64K devices)
I/O0L–I/O17L
I/O0R–I/O17R
Data Bus Input/Output (I/O0–I/O15 for x16 devices; I/O0–I/O17 for x18)
SEML
SEMR
Semaphore Enable
UBL
UBR
Upper Byte Select (I/O8–I/O15 for x16 devices; I/O9–I/O17 for x18 devices)
LBL
LBR
Lower Byte Select (I/O0–I/O7 for x16 devices; I/O0–I/O8 for x18 devices)
INTL
INTR
Interrupt Flag
BUSYL
BUSYR
Busy Flag
M/S
Master or Slave Select
VCC
Power
GND
Ground
NC
No Connect
Operating Range
Range
Ambient
Temperature
VCC
Commercial
0
°C to +70°C
5V
± 10%
Industrial[10]
–40
°C to +85°C
5V
± 10%
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