3 Feb
2012
3 Feb
'12
5:10 a.m.
On 2012 Feb 2, at 8:31 PM, Chuck Guzis wrote:
I've got a board out of an old microwave oven here
that I'm curious
about. There are two ICs on the board--an MP1009ANLP (28 pin 0.600"
wide DIP), which appears to be a TMS1000 MCU. I know that it's
factory-programmed and PMOS (-15V Vdd), and that's a lost cause since
I don't know what's in the ROM and there's no way to find out.
However, there's one other DIP on the board--a 14 pin SN99324. I'm
not certain, but it appears to be part of the LED driver circuitry (7
segment+decimal).
Does anyone have a clue as to what a SN99324 is?
Just a guess from the number, any chance of it being TI's numbering
for a 324 quad op amp?