| ??? 02/20/07 15:12 Read: times |
#133325 - TI TMS6100 speech synthesis ROM Responding to: ???'s previous message |
It's a TI TMS6100 speech synthesis ROM. Here's pretty much the only info I've found on it:
http://www.sprow.co.uk/bbc/hardw...ms6100.pdf It certainly seems to need 9 volts. I suppose I'll have to build some level shifting glue out of some 7404, 74HC4050, and a CD4503BE or two to tristate one direction when I need the other. It's sort of a bigger hardware solution than I was hoping for, though. I could read the data through the resistive voltage dividers, but I can't drive back through those, can I? (The address and data lines are shared.) Thanks. -Sam (And it's spelled the same way my father and grandfather spelled it. Accent on the second syllable.) |
| Topic | Author | Date |
| 9 volt to 5 volt bidirectional logic interface? | 01/01/70 00:00 | |
| rather than "wierd old ROM" why not part number? | 01/01/70 00:00 | |
| if you need to use a misspelled pseudonym | 01/01/70 00:00 | |
| TI TMS6100 speech synthesis ROM | 01/01/70 00:00 | |
| my bad | 01/01/70 00:00 | |
| NXP bidir level shifter appnote | 01/01/70 00:00 | |
| Easy ROM interface | 01/01/70 00:00 | |
| something similar just occured to me | 01/01/70 00:00 | |
| Current limiting resistors | 01/01/70 00:00 | |
| great, I think I've got it | 01/01/70 00:00 | |
| read the datasheet twice ... | 01/01/70 00:00 | |
| voltage question and datasheet errata | 01/01/70 00:00 | |
| Why Vss is positive and Vdd is negative | 01/01/70 00:00 | |
what I meant was ... | 01/01/70 00:00 | |
| RCA/Intersil micro can do 11V | 01/01/70 00:00 | |
| and there was that 1 bit micro... | 01/01/70 00:00 | |
| device programmer, tester | 01/01/70 00:00 | |
| naw ... just use the old RS232 level shifters | 01/01/70 00:00 |