CY7C1049CV33
Document #: 38-05006 Rev. *E
Page 2 of 11
Selection Guide
-8
-10
-12
-15
-20
Unit
Maximum Access Time
8
1012
1520
ns
Maximum Operating Current
Commercial
100
90
85
80
80
mA
Industrial
110
100
95
90
90
mA
Automotive
--
-
95
-
mA
Maximum CMOS Standby Current Commercial / Industrial
10
10
10
10
10
mA
Automotive
--
-
15
-
mA
Shaded areas contain advance information.
Pin Definitions
Pin Name
36-SOJ
Pin Number
44 TSOP-II
Pin Number
I/O Type
Description
A0–A18
1–5,14–18,
20–24,32–35
3–7,16–20,
26–30,38–41
Input
Address Inputs used to select one of the address locations.
I/O0–I/O7
7,8,11,12,25,
26,29,30
9,10,13,14,
31,32,35,36
Input/Output Bidirectional Data I/O lines. Used as input or output lines
depending on operation
NC[2]
19,36
1,2,21,22,23,
24,25,42,43,
44
No Connect
No Connects. This pin is not connected to the die
WE
13
15
Input/Control Write Enable Input, active LOW. When selected LOW, a WRITE is
conducted. When selected HIGH, a READ is conducted.
CE
6
8
Input/Control Chip Enable Input, active LOW. When LOW, selects the chip. When
HIGH, deselects the chip.
OE
31
37
Input/Control Output Enable, active LOW. Controls the direction of the I/O pins.
When LOW, the I/O pins are allowed to behave as outputs. When
deasserted HIGH, I/O pins are three-stated, and act as input data
pins.
VSS, GND
10,28
12,34
Ground
Ground for the device. Should be connected to ground of the
system.
VCC
9,27
11,33
Power Supply Power Supply inputs to the device.
Notes:
2. NC pins are not connected on the die.
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