MCM63D736

4

PIN DESCRIPTIONS

Pin Locations

Symbol

Type

Description

65, 63, 61, 59, 57, 55, 169, 167, 145,

143, 68, 70, 72, 74, 76, 78, 80

AX0 –

AX16

Input

Address Port X: Never allow floating addresses for inputs AX0 – AX16.

A pullup resistor is needed.

64, 62, 60, 58, 56, 54, 168, 166, 144,

142, 69, 71, 73, 75, 77, 79, 81

AY0 –

AY16

Input

Address Port Y: Never allow floating addresses for inputs AY0 – AY16.

A pullup resistor is needed.

82, 86, 90, 94, 96, 100, 102, 106, 108,

113. 115, 119, 121, 125, 127, 131, 135,

139, 170, 174, 2, 6, 8, 12, 14, 18, 20, 25,

27, 31, 33, 37, 39, 43, 47, 51

DQX0 –

DQX35

I/O

Data Input/Output Port X.

83, 87, 91, 95, 97, 101, 103, 107, 109,

112, 114, 118, 120, 124, 126, 130, 134,

138, 171, 175, 3, 7, 9, 13, 15, 19, 21, 24,

26, 30, 32, 36, 38, 42, 46, 50

DQY0 –

DQY35

I/O

Data Input/Output Port Y.

150

E1X

Input

Synchronous Chip Enable Port X: Active low.

151

E2X

Input

Synchronous Chip Enable Port X: Active high.

157

E1Y

Input

Synchronous Chip Enable Port Y: Active low.

158

E2Y

Input

Synchronous Chip Enable Port Y: Active high.

152

GX

Input

Asynchronous Output Enable Port X Input:

Low — enables output buffers (DQXx pins).

High — DQXx pins are high impedance.

153

GY

Input

Asynchronous Output Enable Port Y Input:

Low — enables output buffers (DQYx pins).

High — DQYx pins are high impedance.

156

K

Input

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

except G.

146

PTX

Input

Pass–Through Port X.

147

PTY

Input

Pass–Through Port Y.

148

WX

Input

Synchronous Write Enable Port X.

149

WY

Input

Synchronous Write Enable Port Y.

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

92, 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, 140, 141,

154, 161, 165, 173, 176

VSS

Supply Ground.

159, 159, 160, 162, 163, 164

NC

—

No Connection: There is no connection to the chip.

Freescale Semiconductor, Inc.

For More Information On This Product,

Go to: www.freescale.com