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CY7C1049CV33
Document #: 38-05006 Rev. *G
Page 4 of 12
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[1]
19,36
1,2,21,22,23,2
4,25,42,43, 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.
Note
1. NC pins are not connected on the die.
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