CY7C1021B
CY7C10211B
Document #: 38-05145 Rev. *A
Page 2 of 10
Pin Configurations
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
-
-
150
Maximum CMOS Standby Current (mA)
Com’l / Ind’l
10
10
10
Automotive
-
-
15
L Version
0.5
0.5
0.5
WE
1
2
3
4
5
6
7
8
9
10
11
14
31
32
36
35
34
33
37
40
39
38
Top View
SOJ / TSOP II
12
13
41
44
43
42
16
15
29
30
VCC
A15
A14
A13
A12
NC
A4
A3
OE
VSS
A5
I/O16
A2
CE
I/O3
I/O1
I/O2
BHE
NC
A1
A0
18
17
20
19
I/O4
27
28
25
26
22
21
23
24
NC
VSS
I/O7
I/O5
I/O6
I/O8
A6
A7
BLE
VCC
I/O15
I/O14
I/O13
I/O12
I/O11
I/O10
I/O9
A8
A9
A10
A11
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
39, 40
Input/Control Byte Write Select Inputs, active LOW. BLE controls I/O8–I/O1, BHE
controls I/O16–I/O9.
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 three-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.
English ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
