| part number | TMS9918A |
| manufacturer | Texas Instruments |
| lead free | ??? |
| prefix | U |
| Description | TMS9918A |
| octopart part number | |
| package | |
| RoHS | ??? |
| pin 21 description | CPU data bus |
| pin 2 description | VRAM column address strobe |
| pin 13 description | CPU interface mode select (usu. a CPU address line) |
| pin 20 description | CPU data bus |
| XTAL load capacitors | 15 (min) 39 (max)pF |
| pin 4 description | VRAM address/data bus |
| XTAL frequency | 10.738635 ± 0.05%MHz |
| pin 7 description | VRAM address/data bus |
| pin 8 description | VRAM address/data bus |
| pin 40 description | crystal input |
| Number of colors | 15 plus transparent |
| pin 6 description | VRAM address/data bus |
| pin 36 description | composite video output |
| Sprites per line | 4 |
| pin 16 description | CPU interrupt output |
| pin 14 activelow | True |
| pin 30 description | VRAM read data bus |
| pin 37 description | VDP output clock; XTAL/24 |
| pin 33 description | supply voltage |
| pin 27 description | VRAM read data bus |
| pin 3 description | VRAM address/data bus (least significant bit) |
| pin 5 description | VRAM address/data bus |
| pin 11 description | VRAM write strobe |
| pin 34 description | reset (active low; when above +9V, sync input for ext. video) |
| pin 25 description | VRAM read data bus (least significant bit) |
| pin 32 description | VRAM read data bus (most significant bit) |
| pin 39 description | crystal input |
| pin 11 activelow | True |
| pin 17 description | CPU data bus (least significant bit) |
| pin 16 activelow | True |
| pin 31 description | VRAM read data bus |
| pin 14 description | CPU-VDP write strobe |
| pin 1 activelow | True |
| pin 18 description | CPU data bus |
| pin 34 activelow | True |
| pin 26 description | VRAM read data bus |
| pin 15 description | CPU-VDP read strobe |
| pin 19 description | CPU data bus |
| pin 35 description | external VDP input |
| pin 29 description | VRAM read data bus |
| pin 23 description | CPU data bus |
| pin 10 description | VRAM address/data bus (most significant bit) |
| Number of sprites | 32 |
| pin 28 description | VRAM read data bus |
| pin 24 description | CPU data bus (most significant bit) |
| pin 38 description | VDP color burst frequency clock |
| VRAM size | 4 or 16KB |
| pin 12 description | ground |
| pin 9 description | VRAM address/data bus |
| pin 2 activelow | True |
| pin 15 activelow | True |
| pin 1 description | VRAM row address strobe |
| pin 22 description | CPU data bus |
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