| Type | Integrated Circuit | |
| Case | DIP28 | |
| Manufacturer | Hitachi | |
| No.of Addr. Modes | 7 | |
| I/O Line Types | Multiplexd | |
| Max. Inst. Len (bits) | 20 | |
| Min Inst. Len (bits) | 10 | |
| No. of Intrpt Lines | 1 | |
| No. of Intrpt (NMI) | 0 | |
| Intrpt Types | Mask/Int V | |
| No. of Intrpt (mask) | 2 | |
| fClk Max. (Hz) | 4.5M | |
| fClk Min (Hz) | 1.0M | |
| No. of I/O Ports | 3 | |
| On-Chip ROM (bytes) | 1.0k | |
| Nom. Supp Volt | 5.0 | |
| Tech. | CMOS Integrated Circuit | |
| On-Chip RAM (Bytes) | 64 | |
| Oper. Temp (°C) Min | -20 | |
| Oper. Temp (°C) Max. | 75 | |
| Pinout Equivalence Number | 28-643 | |
| Descript | 1,024 X 10-bit mask ROM; 64 X 4-bit RAM | |
| No. of Pins | 28 | |
| Surface Mounted Yes/No | NO | |
| SKU | 1125372 | |