SC110 v1.1 SIO/2+CTC for RC2014

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SC110 v1.1 (

Combined Z80 Serial Input/Output (SIO/2) and Z80 Counter/Timer (CTC) module for RC2014


  • Full Z80 mode 2 interrupt support (IEI/IEO daisy-chain)
  • Two TTL serial ports for use with FTDI serial adpter cables
  • Four counter/timer channels
  • Source of bus clock (option) to potentially reduce board count
  • Serial port B baud rate controllable in software
  • Option to generate mode 2 interrupts for non-Z80 devices

Documentation at


SC110 v1.1 SIO2+CTC for RC2014

SC110 v1.1 SIO2+CTC for RC2014


ID Name Designator Footprint Quantity Mounted
1 994f4acf33ff4e66aaa5dbbeb5e3fa4f C1,C2,C3,C4,C5 CAP-RAD-2.54MM 5 Yes
2 INTEN P4 HDR-1X02-A-M-2.54MM OLD 1 Yes
3 eb38873a548a44e890646dafc5a28fe9 P2 HDR-1X06-A-M-2.54MM 1 Yes C66509
4 eb38873a548a44e890646dafc5a28fe9 P3 HDR-1X06-A-M-2.54MM 1 Yes C66509
5 34a7e233c2574249bddb82c64475f538 R12,R9,R11,R10 RES-0.3 4 Yes
6 34a7e233c2574249bddb82c64475f538 R1,R2,R3,R4,R5,R6,R7,R8 RES-0.3 8 Yes
7 e088150b30c24b7a9ed0beb9bca9acad JP3 HDR-1X02-S-M-2.54MM 1 Yes
8 e088150b30c24b7a9ed0beb9bca9acad JP4 HDR-1X02-S-M-2.54MM 1 Yes
9 4b38a46151fa48189a769aba9880cdd8 U2 PDIP-40-0.6 1 Yes
10 ef3708183a594802accecd2650f2d634 JP1 HDR-1X02-S-M-2.54MM 1 Yes
11 ef3708183a594802accecd2650f2d634 JP2 HDR-1X02-S-M-2.54MM 1 Yes
12 f66a23276c6d422a8ede49c74c82980d P1 HDR-1X39-A-M-R-2.54MM 1 Yes
13 1d747bae4f75423f8574e97772c3550e X1 OSC-08 1 Yes 774-MXO45HS-3C-7.3
14 5ba509f895244278a1309c0031b47188 R13,R14,R15 RES-0.3 3 Yes
15 40c70b0d93a04b18844dd2ba661fd0fa U1 PDIP-16 1 Yes 595-SN74HCT138N
16 23ec75d1a1984af6b3e54483dea2140f U4 PDIP-28-0.6 1 Yes
17 ef3708183a594802accecd2650f2d634 JP5 HDR-1X02-S-M-2.54MM 1 Yes
18 c13855b02f0a4885ac2a1692a6cf0bec P5 HDR-1X03-A-M-2.54MM 1 Yes
19 1fe0b40a14534e1eb977dcb685d131e1 P6 HDR-1X23-S-M-2.54MM 1 Yes
20 ef3708183a594802accecd2650f2d634 JP6 HDR-1X02-S-M-2.54MM 1 Yes
21 95361f0acbe24177bd4046fac3896162 U3 PDIP-14 1 Yes




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