MPC2104•MPC2105•MPC2106•MPC2107
6
MOTOROLA FAST SRAM
PIN DESCRIPTIONS
Pin Locations Symbol
Type Description
68, 69, 70, 71, 73, 74, 75, 76,
78, 79, 80, 82, 83, 84, 85,
159, 160, 161, 162, 164, 165,
166, 167, 169, 170, 171, 173,
174, 175
A0 – A28 Input Address Inputs – (MSB:0, LSB:28)
62 ADDR0 Input Least significant address bit when asynchronous Data RAMs are used.
153 ADDR1 Input Next to least significant address bit when asynchronous Data RAMs are used.
30, 56, 117, 146, 148 CLK0 – CLK4 Input Clock Inputs – CLK2 is for Tag RAM, CLK0, 1, 3, and 4 are for Data RAMs only .
For MPC2106 use all the clocks. For MPC2104 or MPC2105 use CLK0–CLK2
only. For MPC2107 use CLK2 only.
4, 5, 6, 7, 10, 11, 12, 14, 16,
17, 19, 20, 22, 24, 25, 26, 27,
95, 96, 97, 98, 101, 102, 103,
105, 107, 108, 110, 111, 113,
115, 119
DH0 – DH31 I/O High Data Bus – (MSB:0, LSB:31)
32, 33, 34, 37, 38, 39, 40, 43,
44, 45, 47, 49, 50, 52, 53, 54,
121, 122, 124, 125, 126, 129,
130, 131, 133, 135, 136, 138,
139, 141, 143, 144
DL0 – DL31 I/O Low Data Bus – (MSB:0, LSB:31)
9, 15, 21, 28, 35, 42, 48, 58 DP0 – DP7 I/O Data Parity Bits – (MSB:0, LSB:7)
3, 94 PD2, PD3 Output Presence detect bits.
2 PD0/IDSCLK Input Presence detect bit 0/EEPROM serial clock. (EEPROM option only.)
93 PD1/IDSDATA I/O Presence detect bit 1/EEPROM serial data. (EEPROM option only.)
64, 65 ADS0, ADS1 Input Data RAM Address Strobe – For MPC2104 or MPC2105 use ADS0 only. For
MPC2106 use ADS0
, ADS1.
151 ALE Input Data RAM Address Latch Enable – Use for asynchronous Data RAM only.
155, 156 CNTEN0,
CNTEN1
Input Data RAM Count Enables – For MPC2104 or MPC2105 use CNTEN0 only. For
MPC2106 use CNTEN0
, CNTEN1.
59, 60 COE0,
COE1
Input Data RAM Output Enables – For MPC2104 or MPC2105 use COE0 only. For
all others use COE0
, COE1.
100, 106, 112, 120,
128, 134, 140, 150
CWE0 – CWE7 Input Data RAM Write Enables – (MSB:0, LSB:7)
87 TCLR Input Tag RAM clear.
88 MATCH Output Tag RAM active high match indication.
178 VALIDIN Input Tag RAM valid bit.
179 TWE Input T ag RAM write enable.
89 TOE Input Tag RAM output enable.
90 DIRTYIN Input Dirty input bit.
181 DIRTYOUT Output Dirty output bit.
180 STANDBY Input Standby pin. Reduces standby power consumption.
176, 63, 154 RESERVED Reserved pin.
8, 23, 51, 61, 77, 99, 114,
142, 152, 168
VCC3 Input + 3.3 V power supply. Must be connected.
18, 36, 66, 67, 86, 109, 127,
157, 158, 177
VCC5 Input + 5 V power supply. Must be connected.
1, 13, 29, 31, 41, 46, 55, 57,
72, 81, 91, 92, 104, 116,
118, 123, 132, 137, 145,
147, 149, 163, 172, 182
V
SS
Input Ground
176 BURSTMODE Input Burstmode. 0 = Linear, 1 = Interleaved.