6280

8-bit Microprocessor

Pinout

                     QFP80-(24x16)-14X20MM
+-----------------------------------------------------------+
|  1 A5           | 25 K2   | 41 EA2        | 65 A19        |
|  2 A4           | 26 K3   | 42 EA1        | 66 A18        |
|  3 A3           | 27 K4   | 43 IRQ2       | 67 A17        |
|  4 A2           | 28 K5   | 44 IRQ1       | 68 A16        |
|  5 A1           | 29 K6   | 45 NM1        | 69 A15        |
|  6 A0           | 30 K7   | 46 SYNC       | 70 A14        |
|  7 GND(Vss1)    | 31 O0   | 47 +5V(Vdd)   | 71 A13        |
|  8 +5(Vaa)      | 32 O1   | 48 GND(Vss4)  | 72 A12        |
|  9 XOUT         | 33 O2   | 49 D0         | 73 A11        |
| 10 XIN          | 34 O3   | 50 D1         | 74 A10        |
| 11 *RESET       | 35 O4   | 51 D2         | 75 GND(Vss2)  |
| 12 *READY       | 36 O5   | 52 D3         | 76 +5V(Vbb)   |
| 13 SX           | 37 O6   | 53 D4         | 77 A9         |
| 14 HSM          | 38 O7   | 54 D5         | 78 A8         |
| 15 +5V(VppD)    | 39 EAT  | 55 D6         | 79 A7         |
| 16 GND(Vss5)    | 40 EA3  | 56 D7         | 80 A6         |
| 17 L AUDIO OUT  |         | 57 +5V(Vcc)   |               |
| 18 R AUDIO OUT  |         | 58 GND(Vss3)  |               |
| 19 +5V(VppA)    |         | 59 CEK        |               |
| 20 AUDIO GND    |         | 60 CE7        |               |
| 21 GND(VssA)    |         | 61 *CER       |               |
| 22 K0           |         | 62 *RD        |               |
| 23              |         | 63 *WR        |               |
| 24 K1           |         | 64 A20        |               |
+-----------------------------------------------------------+

Frequency

Set reader to FREQ, put black probe to GND, red probe to 10 or 9 to measure CPU clock

External links

HuC6280 page on archaicpixels.com