CY7C1021BN
CY7C10211BN
Document #: 001-06494 Rev. *A
Page 2 of 10
Selection Guide
7C10211B-10
7C1021B-12
7C1021B-15
Maximum Access Time (ns)
10
12
15
Maximum Operating Current (mA)
Com’l / Ind’l
150
140
130
Automotive-A
130
Automotive-E
130
Maximum CMOS Standby Current (mA) Com’l / Ind’l
10
10
10
Com’l / Ind’l (L version)
0.5
0.5
0.5
Automotive-A (L version)
0.5
Automotive-E
15
Pin Definitions
Pin Name
SOJ, TSOP–Pin Number
I/O Type
Description
A0–A15
1–5,18–21, 24–27, 42–44
Input
Address Inputs used to select one of the address locations.
I/O1–I/O16
7–10, 13–16, 29–32,
35–38
Input/Output Bidirectional Data I/O lines. Used as input or output lines depending
on operation.
NC
22, 23, 28
No Connect
No Connects. Not connected to the die.
WE
17
Input/Control Write Enable Input, active LOW. When selected LOW, a Write is
conducted. When deselected HIGH, a Read is conducted.
CE
6
Input/Control Chip Enable Input, active LOW. When LOW, selects the chip. When
HIGH, deselects the chip.
BHE, BLE
40, 39
Input/Control Byte Write Select Inputs, active LOW. BHE controls I/O16–I/O9,
BLE controls I/O8–I/O1, .
OE
41
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 tri-stated, and act as input data pins.
VSS
12, 34
Ground
Ground for the device. Should be connected to ground of the
system.
VCC
11, 33
Power Supply Power Supply inputs to the device.
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