MCM69Q536

4

MOTOROLA FAST SRAM

PIN DESCRIPTIONS

Pin Locations

Symbol

Type

Description

55, 57, 59, 61, 63, 65, 68, 70, 72, 74, 76,

143, 145, 167, 169

A0 – A14

Input

Synchronous Address Inputs: These inputs are registered and must

meet setup and hold times.

2, 6, 8, 12, 14, 18, 20, 25, 27, 31, 33, 37,

39, 43, 47, 51, 82, 86, 90, 94, 96, 100,

102, 106, 108, 113. 115, 119, 121, 125,

127, 131, 135, 139, 170, 174

D0 – D35

Input

Synchronous Data Input.

150

E1

Input

Synchronous Chip Enable: Active low for depth expansion.

151

E2

Input

Synchronous Chip Enable: Active high for depth expansion.

152

G

Input

Asynchronous Output Enable Input:

Low — enables output buffers (Qx pins).

High — Qx pins are high impedance.

156

K

Input

Clock: This signal registers the address, data in, and all control signals

except G.

146

PT

Input

Pass–through enable: Synchronous.

3, 7, 9, 13, 15, 19, 21, 24, 26, 30, 32, 36,

38, 42, 46, 50, 83, 87, 91, 95, 97, 101,

103, 107, 109, 112, 114, 118, 120, 124,

126, 130, 143, 138, 171, 175

Q0 – Q35

Output

Synchronous Data Output.

148

W

Input

Synchronous Write.

4, 10, 16, 22, 28, 34, 40, 49, 67, 84, 98,

104, 110, 116, 122, 128, 137, 155, 172

VDD

Supply

+ 3.3 V Power Supply.

1, 5, 11, 17, 23, 29, 35, 41, 44, 45, 48,

52, 53, 66, 85, 88, 89, 93, 99, 105, 111,

117, 123. 129, 132, 133, 136, 154, 165,

173, 176

VSS

Supply

Ground.

54, 56, 58, 60, 62, 64, 69, 71, 73, 75,

77 – 81, 140, 141, 142, 144, 147, 149,

153, 157 – 164, 166, 168

NC

—

No Connection: There is no connection to the chip.

TRUTH TABLE

Oi

Input at tn Clock

Result from tn + 1 Clock

Notes

Operation

E1

E2

W

PT

Data Input D

Data Output Q

Write and Pass–Through

L

H

L

L

D written to A

D data appears

1

Write/Read

L

H

L

H

D written to A

Q out from A

2

Pass–Through

L

H

H

L

D data

D data appears

3

Read

L

H

H

H

Don’t Care

Q out from A

4

Deselected

X

L

X

X

Don’t Care

Q is high–Z

5

Deselected

H

X

X

X

Don’t Care

Q is high–Z

6

NOTES:

1. Write D to array and output D at Q.

2. Output contents of array to Q then write D to array.

3. Output D at Q. Do not write.

4. Output contents of array to Q. Do not write.

5. No operation.

6. No operation.