Casio CASSIOPEIA A-20 User Manual

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No. Pin Name Volt Io/Out Function To/From
121 KBOUT7 3V O Key common signal Keyboard
122 KBOUT6 3V O Key common signal Keyboard
123 KBOUT5 3V O Key common signal Keyboard
124 KBOUT4 3V O Key common signal Keyboard
125 KBOUT3 3V O Key common signal Keyboard
126 KBOUT2 3V O Key common signal Keyboard
127 KBOUT1 3V O Key common signal Keyboard
128 KBOUT0 3V O Key common signal Keyboard
129 KBDIN0 3V I Key input signal Keyboard
130 KBDIN1 3V I Key input signal Keyboard
131 KBDIN2 3V I Key input signal Keyboard
132 KBDIN3 3V I Key input signal Keyboard
133 KBDIN4 3V I Key input signal Keyboard
134 KBDIN5 3V I Key input signal Keyboard
135 KBDIN6 3V I Key input signal Keyboard
136 VSS GND
137 KBDIN7 3V I Key input signal Keyboard
138 XCKIN Analog I Oscillator input(3.68MHz) X1
139 XCKOUT Analog I/O Oscillator output(3.68MHz) X1
140 VDD2 3V +3V source
141 ONSWB 3V I ON switch signal Keyboard
142 PENPUTB 3V I Pen down status signal Touch panel
143 LEDOFFB 3V I LED cancel signal LCD unit (SW)
144 DOCKB 3V I Cradle detector RS232C
145 CHGDTCT 3V I Power supply
146 ACLB 3V I ACL signal at battery loaded. IC113(Power supply)
147 BCVRB 3V I Battery cover detecting port SW100
148 BATDTCT 3V I Alkaline/NiMH detecting port SW101
149 ACDTCTB 3V I AC adaptor detect port Q105 (Power supply)
150 VDETS 3V I Backup battery detecting signal Q119 (Power supply)
151 VDTC5B 3V I Alkaline battery detecting signal IC109 (Power supply)
152 VDTC3B 3V I Alkaline battery detecting signal IC110 (Power supply)
153 VDET3B 3V I Alkaline battery detecting signal IC107 (Power supply)
154 VDET2R 3V I NiMH detecting signal(Off) Q100 (Power supply)
155 VDET2 3V I Alkaline battery detecting signal(Off) Q103 (Power supply)
156 VDET1RB 3V I NiMH detecting signal(Low Battery) IC101 (Power supply)
157 VDET1B 3V I Alkaline battery detecting signal(Low Battery) IC100 (Power supply)
158 PSEL5 3V O Power supply select signal for PCMCIA (3/5V) Q113 (Power supply)
159 PLCD 3V O LCD Voltage control signal Q201 (I/F Block)
160 PEL 3V O EL Voltage control signal Q116 (Power supply)
161 PDMMYS 3V O For backup battery detector IC115 (Power supply)
162 PDMMYM 3V O V3 system control signal Q112 (Power supply)
163 PCRD2 3V O VGA288 Voltage control signal Q118 (Power supply)
164 PCRD 3V O PCMCIA Voltage control signal Q117 (Power supply)
165 P5DCHG 3V O V5 Voltage control signal Q115 (Power supply)
166 P5V 3V O V5 Voltage control signal Q107,Q111 (Power supply)
167 P25ON 3V O LCD(+25V) Voltage control signal IC201
168 EVOLDAT 3V O Electronic volume (DAT) IC202 (EVOL)
169 EVOLDIR 3V O Electronic volume (DIR) IC202 (EVOL)
170 EVOLCS 3V O Electronic volume (CS) IC202 (EVOL)
171 EVOLCLK 3V O Electronic volume (CLK) IC202 (EVOL)
172 CAS1HUB 3V O CAS signal for DRAM DRAM
173 CAS1HLB 3V O CAS signal for DRAM DRAM
174 CAS1LUB 3V O CAS signal for DRAM DRAM
175 CAS1LLB 3V O CAS signal for DRAM DRAM
176 CAS0HUB 3V O CAS signal for DRAM DRAM
177 CAS0HLB 3V O CAS signal for DRAM DRAM
178 CAS0LUB 3V O CAS signal for DRAM DRAM
179 VSS GND
180 VDD2 3V +3V source
181 CAS0LLB 3V O CAS signal for DRAM DRAM

Casio CASSIOPEIA A-20 Specifications

General

Brand	Casio
Model	CASSIOPEIA A-20
Category	Handhelds
Language	English