MPC2104P

•MPC2105P

5

MOTOROLA FAST SRAM

PIN DESCRIPTIONS

Pin Locations

Symbol

Type

Description

66, 67, 68, 69, 71, 72, 73,

74, 76, 77, 78, 80, 81, 82,

83, 155, 156, 157, 158,

160, 161, 162, 163, 165,

166, 167, 169, 170, 171

A0 – A28

Input

Address Inputs — (MSB:0, LSB:28).

64

ADS0

Input

Data RAM Address Strobe.

172

BURSTMODE

Input

Burstmode. 0 = Linear, 1 = Interleaved.

59

CG0

Input

Data RAM Output Enable.

30, 56, 115

CLK0 – CLK2

Input

Clock Inputs — CLK2 is for Tag RAM, CLK0 and CLK1 are for Data RAMs only.

153

CNTEN0

Input

Data RAM Count Enable.

138, 148

CWE0 – CWE1

Input

Data RAM Write Enables — (MSB:0, LSB:1).

4, 5, 6, 7, 10, 11, 12, 14,

6, 17, 19, 20, 22, 24, 25,

26, 27, 93, 94, 95, 96, 99,

100, 101, 103, 105, 106,

108, 109, 111, 113, 117

DH0 – DH31

I/O

High Data Bus — (MSB:0, LSB:31).

88

DIRTYIN

Input

Dirty input bit.

177

DIRTYOUT

Output

Dirty output bit.

32, 33, 34, 37, 38, 39, 40, 43,

44, 45, 47, 49, 50, 52, 53, 54,

119, 120, 122, 123, 124, 127,

128, 129, 131, 133, 134,

136, 137, 139, 141, 142

DL0 – DL31

I/O

Low Data Bus — (MSB:0, LSB:31).

86

MATCH

Output

Tag RAM active high match indication.

2

PD0/IDSCLK

Input

Presence detect bit 0/EEPROM serial clock. (EEPROM option only).

91

PD1/IDSDATA

I/O

Presence detect bit 1/EEPROM serial data. (EEPROM option only).

3, 92

PD2, PD3

Output

Presence detect bits.

63, 152

RESERVED

Reserved pin.

176

STANDBY

Input

Standby pin. Reduces standby power consumption.

85

TCLR

Input

Tag RAM clear.

87

TG

Input

Tag RAM output enable.

175

TWE

Input

Tag RAM write enable.

174

VALIDIN

Input

Tag RAM valid bit.

84, 173

VCC

Input

+ 5 V power supply. Must be connected.

8, 23, 51, 61, 75, 97,

112, 140, 150, 164

VDD

Input

+ 3.3 V power supply. Must be connected.

1, 13, 29, 31, 41, 46, 55, 57,

70, 79, 89, 90, 102, 114,

116, 121, 130, 135, 143,

145, 147, 159, 168, 178

VSS

Input

Ground.

9, 15, 18, 21, 28, 35 – 36, 42,

48, 58, 60, 62, 65, 98, 104,

107, 110, 118, 125 – 126,

132, 144, 146, 149, 151, 154

NC

—

There is no connection to the module.