III PERIPHERAL BLOCK:
| Register name | Address | Bit | Name | Function |
| Setting | Init. | R/W | Remarks |
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| P2 function | 00402D8 | D7 | CFP27 | P27 function selection | 1 | TM5 |
| 0 | P27 | 0 | R/W |
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| select register | (B) | D6 | CFP26 | P26 function selection | 1 | TM4 |
| 0 | P26 | 0 | R/W |
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| D5 | CFP25 | P25 function selection | 1 | TM3 |
| 0 | P25 | 0 | R/W |
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| D4 | CFP24 | P24 function selection | 1 | TM2 |
| 0 | P24 | 0 | R/W |
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| D3 | CFP23 | P23 function selection | 1 | TM1 |
| 0 | P23 | 0 | R/W |
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| D2 | CFP22 | P22 function selection | 1 | TM0 |
| 0 | P22 | 0 | R/W |
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| D1 | CFP21 | P21 function selection | 1 | #DWE |
| 0 | P21 | 0 | R/W | Ext. func.(0x402DF) |
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| D0 | CFP20 | P20 function selection | 1 | #DRD |
| 0 | P20 | 0 | R/W |
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| Port function | 00402DF | D7 | CFEX7 | P07 port extended function | 1 | #DMAEND3 |
| 0 | P07, etc. | 0 | R/W |
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| extension | (B) | D6 | CFEX6 | P06 port extended function | 1 | #DMAACK3 |
| 0 | P06, etc. | 0 | R/W |
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| register |
| D5 | CFEX5 | P05 port extended function | 1 | #DMAEND2 |
| 0 | P05, etc. | 0 | R/W |
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| D4 | CFEX4 | P04 port extended function | 1 | #DMAACK2 |
| 0 | P04, etc. | 0 | R/W |
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| D3 | CFEX3 | P31 port extended function | 1 | #GARD |
| 0 | P31, etc. | 0 | R/W |
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| D2 | CFEX2 | P21 port extended function | 1 | #GAAS |
| 0 | P21, etc. | 0 | R/W |
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| D1 | CFEX1 | P10, P11, P13 port extended | 1 | DST0 |
| 0 | P10, etc. | 1 | R/W |
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| function |
| DST1 |
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| P11, etc. |
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| DPC0 |
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| P13, etc. |
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| D0 | CFEX0 | P12, P14 port extended function | 1 | DST2 |
| 0 | P12, etc. | 1 | R/W |
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| DCLK |
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| P14, etc. |
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| 0048180 | DF | CR0A15 |
| 0 to 65535 | X | R/W |
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| comparison | (HW) | DE | CR0A14 | CR0A15 = MSB |
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| X |
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| data A |
| DD | CR0A13 | CR0A0 = LSB |
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| X |
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| register |
| DC | CR0A12 |
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| X |
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| DB | CR0A11 |
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| X |
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| DA | CR0A10 |
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| X |
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| D9 | CR0A9 |
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| X |
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| D8 | CR0A8 |
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| X |
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| D7 | CR0A7 |
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| X |
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| D6 | CR0A6 |
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| X |
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| D5 | CR0A5 |
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| X |
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| D4 | CR0A4 |
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| X |
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| D3 | CR0A3 |
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| X |
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| D2 | CR0A2 |
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| X |
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| D1 | CR0A1 |
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| X |
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| D0 | CR0A0 |
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| X |
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| 0048182 | DF | CR0B15 |
| 0 to 65535 | X | R/W |
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| comparison | (HW) | DE | CR0B14 | CR0B15 = MSB |
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| X |
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| data B |
| DD | CR0B13 | CR0B0 = LSB |
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| X |
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| register |
| DC | CR0B12 |
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| X |
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| DB | CR0B11 |
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| X |
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| DA | CR0B10 |
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| X |
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| D9 | CR0B9 |
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| X |
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| D8 | CR0B8 |
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| X |
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| D7 | CR0B7 |
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| X |
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| D6 | CR0B6 |
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| X |
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| D5 | CR0B5 |
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| X |
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| D4 | CR0B4 |
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| X |
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| D3 | CR0B3 |
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| X |
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| D2 | CR0B2 |
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| X |
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| D1 | CR0B1 |
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| X |
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| D0 | CR0B0 |
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| X |
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| 0048184 | DF | TC015 |
| 0 to 65535 | X | R |
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| counter data | (HW) | DE | TC014 | TC015 = MSB |
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| X |
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| register |
| DD | TC013 | TC00 = LSB |
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| X |
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| DC | TC012 |
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| X |
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| DB | TC011 |
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| X |
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| DA | TC010 |
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| X |
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| D9 | TC09 |
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| X |
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| D8 | TC08 |
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| X |
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| D7 | TC07 |
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| X |
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| D6 | TC06 |
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| X |
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| D5 | TC05 |
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| X |
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| D4 | TC04 |
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| X |
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| D3 | TC03 |
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| X |
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| D2 | TC02 |
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| X |
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| D1 | TC01 |
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| X |
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| D0 | TC00 |
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| X |
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| 0048186 | D7 | – | reserved |
| – |
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| 0 | – | 0 when being read. |
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| control register | (B) | D6 | SELFM0 | 1 | Fine mode |
| 0 | Normal | 0 | R/W |
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| D5 | SELCRB0 | 1 | Enabled |
| 0 | Disabled | 0 | R/W |
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| D4 | OUTINV0 | 1 | Invert |
| 0 | Normal | 0 | R/W |
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| D3 | CKSL0 | 1 | External clock |
| 0 | Internal clock | 0 | R/W |
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| D2 | PTM0 | 1 | On |
| 0 | Off | 0 | R/W |
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| D1 | PRESET0 | 1 | Reset |
| 0 | Invalid | 0 | W | 0 when being read. |
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| D0 | PRUN0 | 1 | Run |
| 0 | Stop | 0 | R/W |
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EPSON | S1C33L03 FUNCTION PART |