Rainbow Electronics AT76C551 User Manual
Page 7

7
AT76C551
1612D–08/01
112
U_CD_
I
134
GND
Digital Ground
156
DB_CLK
O
113
VCC
Digital Supply
135
PC_D7
B
157
VCC
Digital Supply
114
DP
B
136
PC_D6
B
158
NTRST
I
115
DM
B
137
PC_D5
B
159
TCK
I
116
GND
Digital Ground
138
PC_D4
B
160
TDI
I
117
P_OR_UN
I
139
PC_D3
B
161
TMS
I
118
PC_A14
I
140
PC_D2
B
162
TDO
I
119
PC_A13
I
141
PC_D1
B
163
GND
Digital Ground
120
PC_A12
I
142
PC_D0
B
164
XTAL1
I
121
PC_A11
I
143
GND
Digital Ground
165
XTAL2
I
122
PC_A10
I
144
VCC
Digital Supply
166
VCC
Digital Supply
123
PC_A9
I
145
NWE
I
167
TEST_CTRL
I
124
PC_A8
I
146
NCE
168
TST_ECK
I
125
VCC
Digital Supply
147
NCE1
I
169
PC_RESET
I
126
PC_A7
I
148
NIORD
I
170
PLL_TEST_PIN
I
127
PC_A6
I
149
NIOWR
I
171
GND
Digital Ground
128
PC_A5
I
150
NREG
I
172
LFT
129
PC_A4
I
151
NWAIT
O
173
GND
Digital Ground
130
PC_A3
I
152
NINPACK
O
174
OSC_MODE
131
PC_A2
I
153
NIREQ
175
CLK
_
MODE0
132
PC_A1
I
154
GND
Digital Ground
176
CLK
_
MODE1
133
PC_A0
I
155
DB_DATA
O
Pin Summary – Pin Assignment in Numerical Order (Continued)
Pin #
Pin Name
Type
Pin #
Pin Name
Type
Pin #
Pin Name
Type