No. 6450-7/10
LC74980W
Continued from preceding page.
Pin No.
Pin
I/O type
Connection
Notes
I/O
Type
157
DVSS
P
GND
Digital system ground
158
DCLK2
O
POB12
—
Data clock 2 (for two-phase data output)
159
DCLK2B
O
POB12
—
Inverted data clock 2 (for two-phase data output)
160
DVDD
P
Power supply
Digital system power supply: 3.3 V
161
DVSS
P
GND
Digital system ground
162
HOUT
O
POB8
LCD module
Horizontal sync output
163
VOUT
O
POB8
LCD module
Vertical synchronizing signal output or composite synchronizing
signal output
164
VIRST
O
POB4
XTAL
Crystal oscillator reset
165
DVDD
P
Power supply
Digital system power supply: 3.3 V
166
DVSS
P
GND
Digital system ground
167
XTAL
I
g74980m01
VCO
Crystal oscillator circuit output
168
DVDD
P
Power supply
Digital system power supply: 3.3 V
169
DVSS
P
GND
Digital system ground
170
EXCTR
O
POB4
—
External control output (output controlled over the I
2
C bus)
171
MUTE
I
g74980m02
Microcontroller
Mute control input (mute to low)
172
AICS
I
g74980m02
Microcontroller
3-wire bus control chip select
173
AIDA
I
g74980m02
Microcontroller
3-wire bus control bus data
174
AICK
I
g74980m02
Microcontroller
3-wire bus control bus clock
175
SDA
B
g74980m06
Microcontroller
I
2
C control data
176
SCL
I
g74980m02
Microcontroller
I
2
C control clock
177
PDOWN1
I
g74980m01
Microcontroller
Power down 1 (low in normal mode)
178
PDOWN2
I
g74980m01
Microcontroller
Power down 2 (high in normal mode)
179
CLKI0
O
POB12
—
Input system clock output
180
DVDD
P
Power supply
Digital system power supply: 3.3 V
181
DVSS
P
GND
Digital system ground
182
TSTOA7
O
POB4
OPEN
MSB
183
TSTOA6
O
POB4
Test outputs
184
TSTOA5
O
POB4
185
TSTOA4
O
POB4
186
TSTOA3
O
POB4
187
TSTOA2
O
POB4
188
TSTOA1
O
POB4
189
TSTOA0
O
POB4
LSB
190
DVDD
P
Power supply
Digital system power supply: 3.3 V
191
DVSS
P
GND
Digital system ground
192
TSTOB7
O
POB4
OPEN
MSB
193
TSTOB6
O
POB4
Test outputs
194
TSTOB5
O
POB4
195
TSTOB4
O
POB4
196
TSTOB3
O
POB4
197
TSTOB2
O
POB4
198
TSTOB1
O
POB4
199
TSTOB0
O
POB4
LSB
200
TSTMOD3
I
g74980m03
OPEN
Test mode
201
TSTMOD2
I
g74980m03
202
TSTMOD1
I
g74980m03
203
TSTMOD0
I
g74980m03
204
TSTSUB3
I
g74980m03
OPEN
Test sub-mode
205
TSTSUB2
I
g74980m03
206
TSTSUB1
I
g74980m03
207
TSTSUB0
I
g74980m03
208
DVDD
P
Power supply
Digital system power supply: 3.3 V