KX-FT21RS
Pin | Pin Name | Buffer Power supply | 5V Tolerant | Signal Name | I/O | Description |
93 | TEST3 | 3.3V | NO | +3.3V |
| Test pin. fixed High |
94 | XOUT | 3.3V | - | XOUT |
| 24MHz oscillator |
95 | XIN | 3.3V | NO | XIN |
| 24MHz oscillator |
96 | VSS |
|
| DG |
| Ground |
97 | 3.3V |
|
| +3.3V |
| Power supply |
98 | TEST4 | 3.3V | NO | +3.3V |
| Test pin. fixed High |
99 | XHSTWR/IOP41 | 3.3V | YES | RLY | O | Tel line relay control |
100 | XOPRBE/MUX/OP53 | 3.3V | - |
| Speaker mute control | |
101 | XRAS/IOP42 | 3.3V | NO | OPEN | O | Not used |
102 | XCAS1/IOP43 | 3.3V | NO | OPEN | O | Not used |
103 | XCAS2/IOP44 | 3.3V | NO | OPEN | O | Not used |
104 | DB3 | 3.3V | YES | D3 |
| Data bus |
105 | DB2 | 3.3V | YES | 2 |
| Data bus |
106 | DB4 | 3.3V | YES | 4 |
| Data bus |
107 | DB1 | 3.3V | YES | 1 |
| Data bus |
108 | DB5 | 3.3V | YES | 5 |
| Data bus |
109 | DB0 | 3.3V | YES | 0 |
| Data bus |
110 | DB6 | 3.3V | YES | 6 |
| Data bus |
111 | DB7 | 3.3V | YES | D7 |
| Data bus |
112 | XROMCS | 3.3V | - | XROMCS |
| ROM chip select |
113 | XRD | 3.3V | - | /RD |
| Read signal output |
114 | 3.3V |
|
| +3.3V |
| Power supply |
115 | XWR | 3.3V | - | /WR |
| Write signal output |
116 | ADR0 | 3.3V | - | A0 |
| Address bus |
117 | ADR1 | 3.3V | - | 1 |
| Address bus |
118 | ADR2 | 3.3V | - | 2 |
| Address bus |
119 | VSS |
|
| DG |
| Ground |
120 | ADR3 | 3.3V | - | 3 |
| Address bus |
121 | ADR4 | 3.3V | - | 4 |
| Address bus |
122 | ADR5 | 3.3V | - | 5 |
| Address bus |
123 | ADR6 | 3.3V | - | 6 |
| Address bus |
124 | ADR7 | 3.3V | - | 7 |
| Address bus |
125 | ADR8 | 3.3V | - | 8 |
| Address bus |
126 | ADR9 | 3.3V | - | 9 |
| Address bus |
127 | ADR10 | 3.3V | - | 10 |
| Address bus |
128 | VSS |
|
| DG |
| Ground |
129 | 3.3V |
|
| +3.3V |
| Power supply |
130 | ADR11 | 3.3V | - | 11 |
| Address bus |
131 | ADR12 | 3.3V | - | 12 |
| Address bus |
132 | RBA0 | 3.3V | - | A13 |
| Bank address |
133 | RBA1 | 3.3V | - | 14 |
| Bank address |
134 | RBA2 | 3.3V | - | 15 |
| Bank address |
135 | RBA3 | 3.3V | - | 16 |
| Bank address |
136 | RBA4 | 3.3V | - | 17 |
| Bank address |
137 | RBA5/OP | 3.3V | - | 18 |
| Not used |
138 | RBA6/IOP | 3.3V | NO | 19 | O | Not used |
139 | XRESCS1/OP72 | 3.3V | - | OPEN |
| Not used |
140 | XRESCS2/OP71 | 3.3V | - | OPEN |
| Not used |
141 | XMDMCS/OP | 3.3V | - | OPEN |
| Not used |
142 | VSS |
|
| DG |
| Ground |
143 | XRESCS3/OP52 | 3.3V | - | OPEN |
| Not used |
144 | 20KOSC/IOP56 | 3.3V | YES | OPEN | O | Not used |
145 | ADR13 | 3.3V | - | OPEN |
| Not used |
146 | ADR14 | 3.3V | - | OPEN |
| Not used |
147 | 3.3V |
|
| +3.3V |
| Power supply |
148 | ADR15 | 3.3V | - | OPEN |
| Not used |
149 | RM0/IOP00 | 3.3V | YES | T5 | O | Motor control |
150 | RM1/IOP01 | 3.3V | YES | T4 | O | Motor control |
151 | RM2/IOP02 | 3.3V | YES | T3 | O | Motor control |
152 | RM3/IOP03 | 3.3V | YES | T2 | O | Motor control |
153 | RXE/IP04 | 3.3V | YES | T0 | O | Motor control |
154 | TM0/IOP10 | 3.3V | YES | LEDON | O | CIS LED control |
155 | TM1/IOP11 | 3.3V | YES | OPEN | O | Not used |
156 | TM2/IOP12 | 3.3V | YES | OPEN | O | Not used |
157 | TM3/IOP13 | 3.3V | YES | OPEN | O | Not used |
158 | TXE/IP14 | 3.3V | YES | PULL DOWN | I | Pull down |
159 | STB1 | MULT3/5 | NO | STB1 | O | Thermal head strobe 1 |
